TB 9-6625-2296-35
Table 2. Minimum Specifications of Equipment Required - Continued
Manufacturer and model
Common name
Minimum use specifications
(part number)
VARIABLE ATTENUATOR Range: 0 to -90 dB
Hewlett-Packard Model 355D
Accuracy: 1 dB
(355D)
Common name
Description (part number)
CALIBRATION KEY
LOCK OUT KEY (7005-7840-500)
RF POWER AMPLIFIER
ARA, Model 757LC (MIS-45845)
1
SERIAL INTERFACE CABLE ASSEMBLY
NULL MODEM CABLE
2
TEST FIXTURE
TF-119A (7001-1542-400)
1
TEST FIXTURE
TF-119
1For
AN/GRM-114B only.
2For
AN/GRM-122 only.
6. Preliminary Instructions
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test, and whenever the test
requirement is not met take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in the procedure. Additional
maintenance information is contained in TM 11-6625-3244-40 and TM 11-6625-3245-40 for
these TIs.
d. When indications specified in paragraphs 8 through 25 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 25. Do not perform power supply check if all other
parameters are within tolerance.
e. Unless otherwise specified, all controls and control setting refer to the TI.
7. Equipment Setup
WARNING
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each setup within the
performance check where applicable.
a. Connect TI to a 115 V ac source.
CHANGE 1