S-BAND TRANSMITTER ANTENNA FOWARD POWER CALIBRATION WORK SHEET

DATE______________ NAME____________________

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CALCULATIONS

Full scale dBm 90.8 dBm (1200 Kw)

-Coupler 'attenuation' (-62dB nom) ______dB (date last measured) _________

(include coax right-angle adapters

as part of coupler).

-Attenuator 1 ________dB (date last measured)_________

-Attenuator 2 (if used) ________dB (date last measured)_________

-(Attenuator 3 (if used) _________dB (date last measured)_________

TOTAL	________dBm Calculated CW Calibration Signal Level

(nominal level 5.6 dBm - see note below)

Note: the control program's voltage-to-power lookup table is based on a Calibration Signal of 5.6 dBm, so adjust the attenuator pack to make the calculated calibration signal level 5.6 dB +/- 1dB

Inject this cw cal signal at 2380 MHz into the Filter/Limiter/Detector/cable chain and adjust the gain control (R1 of DS2 on Card 2) to give a full-scale meter reading (1200 kW).

Comments:______________________________________________________________

______________________________________________________________

file: hagen\wpfiles\s_bandtx\powercal_worksheets.wpd

S-BAND TRANSMITTER ANTENNA REFLECTED POWER CALIBRATION WORK SHEET

DATE______________ NAME____________________

Channel A

Full scale dBm (from above) 70 dBm (10 kW )

-coupler 'attenuation'(-63 dB nom) ______ _dB

-Attenuator 1A (if used) ________dB (date last measured)_________

-Attenuator 2A (if used) ________dB (date last measured)_________

-(Attenuator 3A (if used) _______dB (date last measured)_________

TOTAL .............................................. ________dBm Calculated CW Calibration Sig. Level	(nominal level 7.1 dB - see note below)

- splitter attenuation Channel A (3dB nom.) _______dB (date last measured) _________

Note: the control program's voltageto-power look-up table is based on a calibration signal level of 7.1 dBm. Adjust the attenuator cascade so that the Calculated CW Calibration Sig. Level is 7.1 +/-1 dBm.

Inject this cw cal signal at 2380 MHz into the Filter/Limiter/Detector/cable chain and adjust the Card A1 gain control (A1R2) to give a full-scale (10kW) meter reading.

Check trip point of Red LED on Card 1 _________kW (should trip at 8 kW meter reading).

Channel B (redundant fault detector)

Set Channel B up with the same total attenuation as Channel A (not critical).

Adjust A2R2 (R2 on Card 2) so that the red LED on Card 2 trips on at a meter reading of 8 kW.

Comments:______________________________________________________________

_____________________________________________________________

file: hagen\wpfiles\s_bandtx\ANTENNA_REF_powercal_worksheets.wpd

S-BAND TRANSMITTER KLYSTRON FOWARD POWER CALIBRATION WORK SHEET

DATE______________ NAME____________________

METERING CIRCUIT (CHECK ONE)

KLYSTRON 1 FORWARD 7.8 dBm

KLYSTRON 2 FORWARD 7.8 dBm

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CALCULATIONS

Full scale dBm (from above) ___87.8_dBm (600kW)

-Coupler 'attenuatio'n (-62dB nom) _____dB (date last measured) _________

-Attenuator 1 ________dB (date last measured)_________

-Attenuator 2 (if used) ________dB (date last measured)_________

-(Attenuator 3 (if used) _________dB (date last measured)_________

TOTAL	________dBm

Inject this cw cal signal at 2380 MHz into the Filter/Limiter/Detector/cable chain and adjust the respective gain control to give a full-scale meter reading.

Comments:______________________________________________________________

______________________________________________________________

file: hagen\wpfiles\s_bandtx\powercal_worksheets.wpd

S-BAND KLYSTRON REFLECTED POWER CALIBRATION WORK SHEET

DATE______________ NAME____________________

METERING CIRCUIT (CHECK ONE)

Optimum Cal Sig

KLYSTRON 1 REFLECTED FULL SCALE dBm = 67.0 (5 kW)	3.4 dBm

KLYSTRON 2 REFLECTED FULL SCALE dBm = 67.0 ( 5kW)	3.8 dBm

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CALCULATIONS

Full scale dBm (from above) _______dBm

-Coupler 'attenuation' (-62dB nom) ____dB (date last measured) _________

-Attenuator 1 _______dB (date last measured)_________

-Attenuator 2 (if used) __ _____dB (date last measured)_________

-(Attenuator 3 (if used) ________dB (date last measured)_________

TOTAL	________dBm

Inject this cw cal signal at 2380 MHz into the Filter/Limiter/Detector/cable chain and adjust the respective gain control to give a full-scale meter reading.

Comments:______________________________________________________________

______________________________________________________________

file: hagen\wpfiles\s_bandtx\ANT_FWD_powercal_worksheets.wpd