pc, cs6716 default configuration checklist: oac-170d ... trc 170 tropo... · note: on cs6716 front...

PC, CS6716 Default Configuration Checklist: OAC-170D Amplifier Adjustments There are 17 total tasks. Each task is worth 1 point. Passing score is 12 points.

Instructor guidance: Use this checklist to grade students on each step as satisfactory (S) or unsatisfactory (U). Circle the appropriate grade for each step.

If an unsafe procedure is spotted, stop the procedure immediately. CS6716 Default Configuration:

1. Select ON/OFFLINE from the Main Menu and then select OFFLINE S U 2. Select CONFIG from the Main Menu and then select DEFAULT S U 3. Select ON/OFFLINE from the Main Menu and then select ONLINE S U

70 MHz Amplifier Adjustments: Gain of each of 4 Amplifiers is adjustable to 16 dB from Down Converter outputs to CS6716 inputs. The overall system gain from the Down Converter input to the CS6716 input is set at 40 dB.

4. Remove all U Links from IF DATA Patch Panel S U 5. Set Filter Select switch to BYPASS S U 6. Connect TX1 IF output to a 16 dB inline attenuator and RX1 input: S U

NOTE: On CS6716 front panel, select ENT for menu, select Monitor, then RSL. This displays all 4 receive channel RSLs.

7. Adjust RCVR1 potentiometer for -40 dBm on the modem RSL1 display. S U 8. Repeat setup and adjustment for RX IF input 2 S U 9. Repeat setup and adjustment for RX IF input 3 S U 10. Repeat setup and adjustment for RX IF input 4 S U

NOTE: Restore to original configuration.

Equalization Procedure: This is performed to overcome gain differences found in different receivers and converters. Make sure HPA is OFF.

NOTE: Waveguide coverplates on receiver waveguide ports installed. 11. On CS6716, select MONITOR from the Main menu, then RSL S U 12. On each Down Converter, turn the Noise Test Switch to PRESELECT S U 13. On CS6716 front panel display, adjust RX1 potentiometer on OAC front

panel for the highest common RSL. S U

14. Adjust RX2 potentiometer for highest common RSL. S U 15. Adjust RX3 potentiometer for highest common RSL. S U 16. Adjust RX4 potentiometer for highest common RSL. S U 17. On Down Converters, turn Noise Test Switch to OFF and restore settings. S U

2900 Titan Row, Suite 142 Orlando, FL 32809 (407) 854-1950 Sheet 1 of 1

Operations PC, Turn On Procedure Checklist: Shelter Turn On There are 21 total tasks. Each task is worth 1 point. Passing score is 15 points.


If an unsafe procedure is spotted, stop the procedure immediately. Shelter Turn On

1. Shelter Ground Connection: Appropriate Ground connected to power entry panel S U

2. Primary Power Source: Connected to shelter but not turned on S U 3. Shelter Air Vents Opened S U 4. Exterior Circuit Breakers (CB) OFF S U 5. Interior Power Distribution Panel CB’s OFF S U 6. Rack Mounted Power Switches OFF S U 7. Primary Power Source ON S U

NOTE: Turn on generator and check the output frequency at the generator itself. Use frequency meter on the generator. Check Frequency, 50 / 60 Hz

8. Exterior Main & Interior Main CB is ON S U NOTE: The Exterior Main CB is on the Exterior power distribution panel and the Interior Main is on the inside of the shelter, on the Main Power Distribution Panel. Light CB ON: Interior lights will come on now if Interlock Switch is already in the

over ride position and the light fixture on / off switches are in the on position. If lights do not come on, continue to next step, if they do come on, skip the next step.

Light Interlock Override switch to override: Interior lights should be on now. If not check on/off toggle switch on light

fixtures. 9. Voltage and Frequency Check instructions S U

CAUTION! Voltage of each phase must agree within ±-5 VAC. Do not continue if the voltages or frequency is out of tolerance.

10. Is Rear Reflector and AZ/EL sensor attached properly? S U 11. Phase Select Switch to A:

Voltmeter reads 120 +/- 12 VAC Frequency reads 55 +/- 7 Hz

S U

12. Repeat for Phases B & C S U 13. DGM CB OFF unless DAR is being used. S U

NOTE: If DGM gear is being used, turn on rack power switches for components being used. Ex LGM, GM and TGM power switches. DGM power indicators ON.

14. CS6716 CB ON S U


Operations PC, Turn On Procedure Checklist: Shelter Turn On There are 21 total tasks. Each task is worth 1 point. Passing score is 15 points.


Shelter Turn On 15. LVPS 1/2 ON: S U

NOTE: Check LVPS front panel indicators on both LVPS. Power indicators ON. 16. FAN PWR CONV CB ON: S U

NOTE: Listen for the sound of the Blowers coming on when you turn on the Circuit Breaker. Look at the AC to AC Converter; make sure the Input Power Indicator is ON.

17. If HPA is being used make sure Tropo Mode LED is ON and turn ON the HPA CB S U

18. If HPA is not being used make sure LOS Mode LED is On and the HPA CB is OFF S U

19. Dummy Load LED ON / Antenna LED OFF S U 20. If Voice Orderwire Alarm sounds, depress the SUPPR / TEST

pushbutton. S U

21. If Fault Summary Alarm on VOCU is on, depress the reset pushbutton. S U

Operations PC, HPA Tuning Checklist: High Power Amplifier There are 15 total tasks. Each task is worth 1 point. Passing score is 12 points.


If an unsafe procedure is spotted, stop the procedure immediately. High Power Amplifier

1. Waveguide Ports Connected to one of these: Antenna

Internal Dummy Load

External Dummy Load

S U

2. Control Beam Voltage Toggle switch OFF S U

3. a) HPA Circuit Breaker ON b) HPA Tuning Compartment S U

4. Match Serial Numbers on electron tube to serial numbers on tuning chart. S U

NOTE: Follow tuning instructions on tuning chart. 5. Tune to nearest specified frequency S U 6. Turn TUNERS 1-5 to matching CAV 1-5 settings S U 7. Turn Bandpass Filter Dial to specified transmit frequency S U 8. Drive Adjust control fully cw S U 9. a) Check Mode FIL LED is lit.

KLYSTRON meter select switch to BEAM X 1K b) BITE compartment panel set RANGE to HI or LO. c) CONTROL-BEAM VOLTAGE switch ON.

S U

10. KLYSTRON meter observe 6KV± 0.1KV (LO), or 7.6KV ± 0.1KV (HI) RF INPUT meter select to DRIVE

RF OUTPUT-TROPO-REFLECTED PWR meter select to KLYSTRON

RF OUTPUT-TROPO-FORWARD PWR meter select to KLYSTRON

S U

11. LO beam voltage setting, turn DRIVE-ADJUST control to obtain a reading of .2KW on RF OUTPUT-TROPO-FORWARD PWR meter. Skip this step if using HI power.

S U

12. HI beam voltage setting, turn DRIVE-ADJUST control to obtain a reading of 0.4KW on RF OUTPUT-TROPO- FORWARD PWR meter. Skip this step if using LO power.

S U


Operations PC, HPA Tuning Checklist: High Power Amplifier There are 15 total tasks. Each task is worth 1 point. Passing score is 12 points.


High Power Amplifier 13. Hold DRIVE-ADJUST/CALIBRATE switch in CALIBRATE, adjusting

compression calibration control to obtain DRIVE meter reading in green area

S U

14. Set KLYSTRON meter select switch to BODY X 0.01 S U 15. Meter should not read above 50 milliamps during the rest of this

procedure S U

16. Hold DRIVE-ADJUST/CALIBRATE switch at ADJUST while adjusting Drive Adjust control to obtain a reading in the green area, or 5 on the KLYSTRON meter, whichever occurs first.

S U

Operations PC, QRA Setup Checklist There are 57 total tasks. Each task is worth 1 point. Passing score is 36 points.


If an unsafe procedure is spotted, stop the procedure immediately. NOTE: Roughly position the trailer to marked line by moving with towing vehicle. Positioning trailer

WARNING! Trailer tongue weighs 120 pounds. Use three persons and lift carefully to avoid personal injury or tipping trailer backwards. 1. a) Lower and latch dead leg (See Figure 2-4).

b) Unhitch trailer from towing vehicle (figure 2-5) S U

WARNING! Ensure that both handbrakes are set and dead leg properly deployed before releasing the trailer tongue. 2. Manually position the trailer over a rough center marker with the tongue

aligned along trailer center line (figure 2-3). Center trailer wheels on 20 foot to 32.5 foot marked line. Curbside of trailer should face in the direction of transmission.

S U

WARNING! Ensure that both handbrakes are set and dead leg properly deployed before releasing the trailer tongue, to avoid personal injury. 3. a) Using pocket transit, align the curbside of the trailer to 90° degrees

from the transmission direction. b) Set two handbrakes (Figure 2-6. Hand Brakes Set to ON Position) by

pulling up until each handle latches in horizontal position.

S U

Install Baseplates (Bearing Pads) NOTE: Before proceeding, use pocket transit to ensure that trailer is pointing to within ±2 degrees of required direction of transmission. If QRA cannot be leveled, use wooden 2 x 4's to shim under baseplate.

4. a) Loosen tarpaulin cover tiedowns (See Figure 2-7Tiedown Straps) b) Lift end flaps of tarpaulin out of way to clear endgames. S U

WARNING! Hold baseplates in position while releasing baseplate fasteners to avoid dropping on toes. 5. Release baseplate fasteners one at a time to remove each baseplate

from endgates. (See Figure 2-8.Trailer Endgate View) S U

6. Remove two jack struts each from front and rear of center tube support assembly (See Figure 2-8). S U




Install Baseplates (Bearing Pads) 7. Lay one jack strut and one baseplate at each corner of trailer

(See Figure 2-9. Jack Struts and Baseplates Removed) S U

WARNING! Stay clear of jacks when releasing pins to avoid injury. 8. At each corner of trailer, hold onto jack while pulling pins. Carefully allow

jacks to swing free from stowed position. (See Figure 2-10. Release of Leveling Jacks)

S U

9. Attach jack struts to holes labeled STRUT and to clevis on end of jack. (See Figure 2-11 Attachment of Jack Struts) S U

10. Remove handcrank from each endgate. S U 11. At each corner of trailer, position baseplate socket under the ball of jack.

Secure lower end of each strut with captive pins. S U

12. a) In turn, attach handcrank through dust cover to square drive shaft of each jack (See Figure 2-12. Handcrank Attachment to Leveling Jack).

b) Crank clockwise until jack ball is seated in baseplate socket. S U

NOTE: Ground slope may prevent lifting wheels above ground. In such cases, dig or backfill as necessary to provide more level footing for the baseplates.

13. Crank four jacks as required to lift both wheels off the ground, if possible. S U

Antenna Erection Procedure: Trailer Leveling WARNING! Do not erect antenna if the winds at ground level exceed 30 knots. 14. With one person cranking at each forward jack, adjust for level condition

along front edge of trailer. Roadside operator observes leveling bubble at forward end (Figure 2-13. Leveling Bubble Location). Curbside observer makes sure no jack ball rises out of baseplate socket.

S U

NOTE: Bubble is centered enough when it is at least half way into the circle. 15. With one person at each roadside jack, level trailer so that roadside

bubble becomes centered. S U

16. Two man operation: Adjust rear curbside jack until front bubble begins to go off center. Then, lower jack until bubble is recentered. S U

NOTE: During cold weather, handbrakes can freeze and lock the wheels. Release handbrakes after leveling trailer if both wheels are off ground.

Remove Trailer Tarpaulin 17. Remove, fold, and place tarpaulin under trailer. S U 18. Remove six cover frame supports (See Figure 2-14. Cover Frame

Support Removal) and set aside. S U



Unload Feedhorns and Spars 19. a) Release endgate fasteners and lower endgates at each end.

(See Figure 2-15. Endgates Lowered) b) Stand on both endgates. c) Release four fasteners holding each of the two feedhorns to center

tube support arms. (See Figure 2-16 Removal of Feedhorns from Stowage)

S U

20. a) Set one feedhorn behind and one in front of the trailer (about 15 feet). b) Release pins holding spars to center tube support arm Place three

spars with each feedhorn. (See Figure 2-17. Removal of Spars from Stowage).

S U

Unload Reflectors WARNING! Each reflector weighs 75 pounds. Two person lift required to avoid personal injury. CAUTION! Do not roll reflectors on edge. To avoid reflector damage, do not let go of a reflector unless it is firmly on ground or is attached to extension tube. 21. Release the two straps that secure the reflectors. (See Figure 2-18.

Removal of Reflectors From Stowage) S U

22. a) One person stands on each endgate. b) Lower reflector to ground beside trailer (See Figure 2-19. Rear

Reflector Lowered to Ground). c) Lift top reflector by its handles. d) While person on forward endgate holds reflector in place, other

person steps off endgate and grasps reflector. Then, person on front endgate steps down to ground.

e) With each person grasping two handles of reflector, carry reflector to rear of trailer (about 15 feet). Set reflector on ground face up (See Figure 2-20. Rear Reflector on Ground).

f) Repeat steps a through e for the remaining (front) reflector.

S U

CAUTION! To avoid reflector damage, do not place it face down on ground.



Attach Forward and Rear Extension Tubes. WARNING! Each extension tube weighs 77 pounds. End of extension tube with antenna mounting plate is heavier than the other end. To avoid injury, handle with two persons using four handles. 23. a) Release forward and rear hold down cables from center tube struts.

(See Figure 2-21. Release of Main Strut Stowage Cables) b) Remove ROCU case and accessory case from roadside of trailer

deck. (See Figure 2-22. Removal of ROCU Case and Accessory Case)

c) Release two straps that secure the rear extension tube. (See Figure 2-23 Release of Rear Extension Tube Straps)

S U

d) Pull rear extension tube from rear of trailer. (See Figure 2-24 Removal of Rear Extension Tube from Stowage)

e) Stand rear extension tube on mounting plate end with plate extending towards the roadside. (See Figure 2-24 Rear Extension Tube Orientation)

S U

f) Release two straps that secure the forward extension tube. g) Pull forward extension tube from the front of the trailer. h) Stand forward extension tube on mounting plate with plate extending

towards roadside. i) Remove protective covers from the forward extension tube and center

the tube. (See Figure 2-25)

S U

j) Lift forward extension tube, aligning the guide pins and arrows, and attach the center of the tube (See Figure 2-26 Attachment of Extension Tubes)

k) Fasten six captive bolts. (See Figure 2-26)

S U

l) Pull out pin to release reflector mounting plate. (See Figure 2-27 Release of Reflector Mounting Plate)

m) Swing plate out. (Figure 2-28 Mounting Plate in Position for Reflector)

S U

n) Attach rear extension tube to rear of center tube by repeating steps I through m.

S U

Attach Forward and Rear Azimuth Actuators. 24. a) Remove both actuators from center tube support assembly.

(See Figure 2-29 Removal of Azimuth Actuators from Stowage) b) At forward extension tube, pin fixed end of actuator to extension tube

with azimuth indicator window facing downward. (See Figure 2-30 Installation of Forward Azimuth Actuator)

c) Lift reflector mounting plate and position screw end of actuator in reflector mounting plate clevis. (See Figure 2-30)

S U

d) Insert pin through clevis, and screw end of actuator and secure. S U e) To attach rear azimuth actuator to rear extension, repeat b through d. S U



Attach Forward Reflector Warning! Each reflector weighs 75 pounds. To avoid personal injury, requires two persons for lifting and/or carrying. CAUTION! Carry reflector by four handles. To avoid damage, do not roll reflector on ground. 25. a) Carry forward reflector to forward extension tube.

b) Two person operation: With one person holding the reflector, on the edge and the other person guiding, lift the reflector into position.

NOTE: Be sure the alignment pins match the holes on the extension tube mounting plate.

c) Mount the reflector onto four pins and push onto mounting plate.

NOTE: Spring loaded latches will automatically clasp reflector to mounting plate (See Figure 2-31. Engagement of Reflector with Thumb Latches).

S U

d) Without letting go of the reflector, engage and hand tighten four captive screw fasteners. (See Figure 2-32 Engagement of Reflector Captive Screw)

S U

Attach Forward Feedhorn 26. a) Carry forward feedhorn (removed from stowage) to forward reflector.

b) Attach feedhorn to reflector at 8 o’clock clevis (See Figure 2-33 Attachment of Forward Feedhorn) by inserting quick-release pin.

S U

c) Attach center spar to feedhorn coupling, then to reflector clevis by inserting pin. (See Figure 2-34 Attachment of Center Spar)

d) Attach spar no. 2 to feedhorn coupling, then to reflector clevis by inserting pin. (See Figure 2-35 Attachment of Spar No. 2)

e) Attach spar no. 3 to feedhorn coupling, then to reflector by inserting pin (See Figure 2-36 Attachment of Spar No. 3)

S U

Attach Rear Reflector and Az/El Sensor Warning! Each reflector weighs 75 pounds. To avoid personal injury, requires two persons for lifting and/or carrying.

CAUTION! Carry reflector by four handles. To avoid damage, do not roll reflector on ground.



27. a) Attach other reflector to rear extension tube by repeating steps a through c for step 26.

b) Remove straps from az/el sensor at rear curbside of trailer platform. (See Figure 2-37 Removal of Az/El sensor from Stowage)

S U

c) Install az/el sensor onto back of rear reflector (See Figure 2-38 Az/El Sensor Installed on Rear Reflector)

S U

Attach Rear Feedhorn 28. a) Carry remaining (rear) feedhorn (removed from stowage) to rear

reflector. b) Attach feedhorn to rear reflector at 4 o’clock clevis. (See Figure 2-39

Attachment of Rear Feedhorn)

S U

c) Attach center spar to feedhorn coupling, then to reflector clevis by inserting pin. (See Figure 2-40 Attachment of Rear Feedhorn)

S U

d) Attach spar no. 2 to feedhorn coupling, then to reflector clevis by inserting pin. (See Figure 2-41 Attachment of Spar No. 2)

S U

e) Attach spar no. 3 to feedhorn coupling then to reflector clevis by inserting pin (See Figure 2-42 Attachment of Spar No. 3)

S U

Attach Messenger Cables 29. a) Release straps and remove messenger cable bag from stowage

position. (See Figure 2-43 Removal of Messenger Bag from Stowage) b) Open bag and separate messenger cables. c) Stand on rear endgate with one messenger cable.

S U

d) Attach hook end of messenger cable to center tube support arm. (See Figure 2-44 Attachment of Messenger Cable)

e) Drape rest of cable over road side edge of trailer. (See Figure 2-45 Draped Messenger Cable)

S U

f) Attach other messenger cable to the front center tube support arm by repeating steps c through e. S U

Attach All Antenna Cables CAUTION! To prevent damage, do not step on flexible waveguide. NOTE: Do not attach deicer cables if temperature will remain above freezing. 30. a) Release two rubber stamps and remove waveguide container from

rear roadside stowage position. (See Figure 2-46 Removal of Flexible Waveguide from Stowage)

b) Release container straps and unwind two flexible waveguides. c) Position two waveguides to run between shelter and rear antenna. d) Remove waveguide container and waveguide from forward roadside

stowage position on trailer as in steps a and b.

S U



Attach All Antenna Cables e) Position this third waveguide to run between shelter and front antenna

(See Figure 2-47 Initial Positioning of Flexible Waveguides) f) Unpack one deicer cable (W105/W106) from messenger cable stow

bag. Unpack the az/el sensor cable (W107/W108) from the sensor cable stow bag. Lay these cables on ground beside two flexible waveguides at the rear antenna.

g) Please second deicer cable beside one flexible waveguide running between front antenna and shelter. (See Figure 2-48 Initial Positioning of Waveguides and Cables)

S U

h) At forward antenna, select proper rigid waveguide flange according to the receive polarization information supplied on crew assignment sheet (Refer to Table 3-1). Remove protective cover from this flange. (See Figure 2-49 Removal of Rigid Waveguide Flange Cover)

I) Loosen two wing bolts on flexible waveguide flange and remove the protective plate. (See Figure 2-50 Removal of Flexible Waveguide Flange Protective Plate)

S U

j) Attach flexible waveguide with o-ring washer to rigid waveguide and fasten with clamp. (See Figure 2-51 Attachment of Flexible Waveguide Flange Protective Plate)

k) Remove protective caps from both the feedhorn and the deicer cable connectors. (See Figure 2-52 Removal of Deicer Connector Protective Caps

l) Attach deicer cable to feedhorn deicer connector. (See Figure 2-53 Attachment of Deicer Cable to Forward Antenna)

S U

m) Attach waveguide and deicer cable to four messenger cable waveguide supports. (See Figure 2-54 Waveguide and Deicer Cable Secured to Forward Messenger Cable)

n) At rear antenna position, repeat steps h through m. Attach two flexible waveguides and the deicer cable.

o) Remove protective caps from az/el sensor unit and sensor cable. (See Figure 2-55 Removal of Caps from Az/El Sensor and Sensor Cable)

S U

p) Attach az/el sensor cable to az/el sensor unit. (See Figure 2-56 Attachment of Az/El Sensor Cable) S U



q) Attach one flexible waveguide and the az/el sensor cable to one side of four messenger cable waveguide supports. (See Figure 2-57 First Waveguide and Az/El Sensor Cable Secured to Rear Messenger Cable)

r) Attach second flexible waveguide and the deicer cable to other side of four waveguide supports. (See Figure 2-58 Second Waveguide and Deicer Cable Secured to Rear Messenger Cable)

s) Determine the receive polarization from crew assignment sheet (refer to Table 3-1). Tag corresponding waveguide at both ends as “RECEIVE”.

S U

Antenna Erection Procedure CAUTION! Clear waveguides and messenger cables as antenna is being raised. NOTE: As antenna is raised, the two folding struts unfold to support raised assembly. (See Figure 2-64 Handcrank Attachment for Antenna Erection, Figure 2-65 Partially Raised Antenna, and Figure 2-66 Fully Raised Antenna) 31. a) At front or rear of center tube support arm assembly, fit the handcrank

onto the square drive of the erection drive unit. (See Figure 2-64) S U

WARNING! To avoid personal injury and equipment damage, attach and use only one handcrank at a time. CAUTION! Turning handcrank in the wrong direction can severely damage the trailer bed.

b) Raise antenna to operating position by turning crank in the counterclockwise direction indicated on the jack post below the crank. (See Figure 2-64)

S U

NOTE: A crew member should stand on one of the tailgates to monitor struts. When the reflector is fully erected, the crew member should push lightly on the struts until each strut pops into a straight locking position. c) When the erection drive unit reaches full travel, remove the crank,

straighten the struts, and lock the pintle locks at the joints of both folding struts. (See Figure 2-67 Pintle Lock Operation) Read both instruction plates at the pintle locks for lock operation.

S U



Connect the Antenna to the Shelter 32. a) At shelter, release the fasteners on both waveguide entry covers.

(See Figure 2-68 Release of Waveguide Entry Panel Covers) b) Using the stay bars provided, place the latch covers in the raised

position. c) Attach messenger cable from the front antenna to the shelter front

curbside lift ring. (See Figure 2-69 Attachment of Front Antenna Messenger Cable to Sheltered.

d) Release clamp from the inboard flange of the curbside waveguide entry panel and remove the protective cover. (See Figure 2-70 Waveguide Clamping Details)

e) Release the clamp on the shelter curbside waveguide and remove the protective plate.

S U

f) Attach the waveguide to flange on the waveguide entry panel and fasten the clamp. (See Figure 2-70) S U

g) Attach the messenger cable from the rear antenna to the shelter forward roadside lift ring. (See Figure 2-71 Attachment of Rear Antenna Messenger Cable to Shelter)

h) Release two clamps on the roadside waveguide entry panel and remove the protective plates. (See Figure 2-72 Waveguide Clamping Details)

i) Release clamps on two shelter roadside waveguides and remove the protective plates.

S U

j) Attach two waveguides to their respective ports. (See Figure 2-72) Check the “RECEIVE” tag identifying the waveguide to be connected to the corresponding flange at shelter.

k) Tighten and secure the messenger cable on the roadside shelter. (See Figure 2-73 Messenger Cable Tension Clamp

l) Remove protective caps from az/el sensor cable and connector on roadside waveguide entry panel. (See Figure 2-74 Az/El Sensor Cable Connection)

S U

m) Attach az/el sensor cable. (See Figure 2-74) S U



n) Release the fasteners on the cover of the power entry panel and secure the cover in the raised position. (See Figure 2-75 Power Entry Panel Cover Raised)

NOTE: If temperature is sure to remain above freezing, do not connect deicer cables (if applicable, skip steps o & p).

o) Remove the protective caps from two deicer cable and connectors on

the power entry panel. (See Figure 2-76 Deicer Cable Connections) p) Attach deicer cable to DEICER-1 connector. q) Tighten and secure messenger cable on curbside of shelter. (See

Figure 2-77) r) Route deicer cable through rear curbside lift ring, across shelter roof,

and down to power entry panel.

S U

PC, CS6716 Pre-Power-Up, Power-Up & IF Loop: CS6716 Modem Checklist There are 12 total tasks. Each task is worth 1 point. Passing score is 8 points. Instructor guidance: Use this checklist to grade students on each step as satisfactory

(S) or unsatisfactory (U). Circle the appropriate grade for each step.

If an unsafe procedure is spotted, stop the procedure immediately. Pre-Power-Up Procedure:

1. Verify Modem Processor Boards(s) Installed S U 2. Verify Analog Board(s) installed S U 3. Install CS6716 patch plugs S U 4. Remove any digital data patch cables S U

Power-Up Procedure:

5. At AC Distribution panel switch CS6716 CB ON S U 6. Verify 10 MHz oscillator stability S U 7. Open front panel and SIMULTANEOUSLY turn on top 2 PCB’s: S U

NOTE: Modem automatically performs diagnostics and AGC calibration. Internal IF Loop:

8. Verifies correct operation quickly, without external equipment. S U 9. From top level menu, select DIAG, then Loopback, then LOCAL IF. S U 10. Modem synchronizes S U 11. RX SYNC LED (green) illuminates S U 12. MAJOR ALARM (red) extinguished S U


Operations PC, Tropo Radio Tuning Checklist There are 3 total tasks. Each task is worth 1 point. Passing score is 2 points.


If an unsafe procedure is spotted, stop the procedure immediately. Up Converter

1. Set for transmit operating frequency S U Down converter: Set for receive operating frequency

2. Adjust Pre-Selectors S U 3. Adjust Post Selectors S U

NOTE: Noise Test Switches OFF S U Dual RF Synthesizer

4. Set transmit side to operating frequency and tune Phase Lock Loop Circuit by adjusting Tuning knob until meter is in the green area and summary fault is off.

S U

5. Set receive side to operating frequency and tune Phase Lock Loop Circuit by adjusting Tuning knob til meter is in the green area and summary fault is off.

S U


System Operation Performance Check Checklist: Team PC There are 73 total tasks. Each task is worth 1 point. Passing score is 52 points.


If an unsafe procedure is spotted, stop the procedure immediately. NOTE: Each team will be provided with the following: a TRC170V3 and QRA, and a CUT

Sheet with all the information needed to set up the link. Team Members:

1. 2. 3. 4.

Set up TRC-170 & QRA using CUT Sheet, and the QRA Setup handout. 1. Does the curbside of the trailer point in the direction of the transmission? S U 2. Was QRA positioned correctly? S U 3. Were jacks held while being unpinned? S U 4. Is trailer level according to leveling bubbles? (At least half a bubble

inside the circle?) S U

5. Were Reflectors handled and placed on ground correctly? S U 6. Were Extension tubes placed and mounted correctly? S U 7. Were Azimuth Actuators attached properly? S U 8. Was Forward Reflector mounted properly? S U 9. Was Forward Feedhorn mounted properly? S U 10. Is Rear Reflector and AZ/EL sensor attached properly? S U 11. Was Rear Feedhorn mounted properly? S U 12. Are all antenna cables and waveguides positioned properly for initial

placement? S U

13. Are transmit and receive polarities checked against crew assignment sheet and waveguide hooked up accordingly? S U

14. Is the antenna being raised correctly? Is one person turning crank on the erection drive unit in the counterclockwise direction? S U

15. After complete antenna erection, are the pintle locks engaged on the folding strut arms? S U

16. Distance between QRA and Shelter Does not exceed 12’ S U 17. Are all cables and waveguides connected to shelter properly? S U



Power up the shelter using the Shelter Turn On handout.

Do NOT proceed to the next step until your instructor checks each step. 18. Ground cable connected to Power Entry Panel S U 19. Power cable connected to shelter and generator S U 20. Shelter Air Vents opened S U 21. All Exterior and Interior Circuit Breakers OFF S U 22. Primary Power source on. Check output frequency is 50 Hz S U 23. (OCONUS) or 60 Hz (CONUS) S U 24. Exterior and Interior Main CB’s ON. Light CB ON. S U 25. Voltage and Freq for each phase is in tolerance, if not stop 120 ± 12

VAC, 55 Hz ± 7 Hz S U

26. CS6716 CB ON S U 27. LVPS1/2 CB ON, Power Indicators lit S U 28. FAN PWR CONV CB ON, Check AC to AC Converter for faults S U 29. Tropo LED ON S U 30. HPA CB ON S U 31. Dummy Load LED ON S U

Perform the CS6716 Default Configuration and OAC-170D Amplifier Adjustments handout.

32. On the CS6716 select OFFLINE off the Main Menu S U 33. Select CONFIG off the OFFLINE Menu S U 34. Select DEFAULT off the CONFIG Menu S U 35. Select the ENT Key S U 36. Remove all U links from IF Data Patch Panel Set Filter Select switch to

BYPASS S U

37. Connect TX1 IF output to 16 db inline attenuator and RX1 input jack. On CS6716 select ENT, MONITOR, and RSL. S U

38. Adjust RCVR1 pot for -40 RSL on CS6716 Display S U 39. Repeat setup and adjustment for RX2 IF input S U 40. Repeat setup and adjustment for RX3 IF input S U 41. Repeat setup and adjustment for RX4 IF input S U 42. Restore to original configuration. S U 43. Turn HPA CB to OFF, waveguide connected or cover plates installed. S U 44. On each Down Converter, turn Noise Test Switch to PRESELECT. S U 45. On CS6716, select MONITOR from Main Menu, then RSL. S U 46. On CS6716 display, adjust RX1 pot on OAC-170 front panel for the

highest common RSL. S U

47. Repeat using RX2 pot S U




Perform the CS6716 Default Configuration and OAC-170D Amplifier Adjustments handout.

48. Repeat using RX3 pot S U 49. Repeat using RX4 pot S U 50. On Down Converters, turn Noise Test Switch OFF and restore settings S U

Perform Tropo Radio Tuning handout. 51. On Up Converter, tune for transmit frequency S U 52. On Down Converters, tune Pre and Post Selectors for receive frequency S U 53. Noise Test Switches OFF S U 54. On Dual RF Synthesizer, tune-transmit side to transmit, frequency and

adjust phase lock loop circuit until meter indicates in the green scale and the summary fault is Off.

S U

Perform Internal IF Loopback handout. 55. On SC6716 display, go to top level menu, select DIAG, then select

LOOPBACK, then LOCAL IF. S U

56. CS6716 synchronizes, RX SYNC LED (Green) illuminates S U 57. MAJOR ALARM LED (Red) extinguished Normal up equipment S U

Perform HPA Tuning handout. Bring HPA up in Low Power and select the Dummy Load setting.

58. Control-Beam voltage toggle switch OFF S U 59. In HPA tuning compartment match serial number on klystron to serial

number on tuning chart. S U

60. Tune to nearest specified frequency S U 61. Turn TUNERS 1-5 to matching CAV 1-5 settings S U 62. Turn Bandpass Filter Dial to specified transmit frequency S U 63. Turn Drive Adjust Control fully clockwise S U 64. Check Mode-Fil LED is lit KLYSTRON meter select switch to BEAM X

1K S U

65. On BITE compartment panel set range switch to LO S U 66. Turn CONTROL-BEAM VOLTAGE switch ON Observe 6 KV ± .1 KV S U 67. Turn DRIVE ADJUST control to obtain a reading of 2 KW on RF

OUTPUT-TROPO-FORWARD PWR meter. S U

68. Hold DRIVE-ADJUST/CALIBRATE switch in CALIBRATE, adjust compression calibration control to obtain a DRIVE meter reading in green area.

S U



Perform HPA Tuning handout. Bring HPA up in Low Power and select the Dummy Load setting.

69. Set KLYSTRON meter select switch to BODY X 0.01 Meter should not read above 50 milliamps for the rest of this procedure. S U

70. Hold DRIVE-ADJUST/CALIBRATE switch in ADJUST while adjusting DRIVE-ADJUST control to obtain a reading in the green area, or 5 on the KLYSTRON meter, whichever occurs first.

S U

71. Turn DRIVE-ADJUST control fully clockwise. Turn off CONTROL-BEAM VOLTAGE switch S U

72. Select LOS mode. Observe LOS LED is lit. Dummy Load LED is extinguished. S U

The Link is considered established when the CS6716’s lock up with each other.

73. CS6716 lock up with the distant end S U

pc, cs6716 default configuration checklist: oac-170d ... trc 170 tropo... · note: on cs6716 front...

Documents