TB 9-4920-460-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set, AN/GSM-287 or AN/GSM-440. Alternate items may be used by the
calibrating activity when the equipment listed in table 2 is not available. The items
selected must be verified to perform satisfactorily prior to use and must bear evidence of
current calibration. The equipment must meet or exceed the minimum use specifications
standard and TI. Where the four-to-one ratio cannot be met, the actual accuracy of the
equipment selected is shown in parentheses.
5. Accessories Required. The accessories required for this calibration are common
usage accessories, issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure. The following peculiar accessories are also required for this
calibration: RF Power Amplifier, Ophir RF, Model XRF733; Low Pass Filter, Telonic, Model
TLC125-6EF1.
Table 2. Minimum Specifications of Equipment Required.
Manufacturer and model
Common name
Minimum use specifications
(part number)
ATTENUATOR (FIXED)
Range: 3, 6, and 10 dB
Weinschel, Model 9918, 9918-3dB,
Frequencies: 59 and 118 MHz
9918-6dB, and 9918-10dB (9918)
Accuracy: 0.3 for 3 and 6 dB
0.5 for 10 dB
FREQUENCY COUNTER
Range: 29 to 400 MHz
Fluke, Model PM6681/656
Accuracy: 37.5 Hz
(PM6681/656)
MEASURING RECEIVER
Range: 29 to 400 MHz
Measuring receiver system
dBm range: +13 to -100
N5530S consisting of: Spectrum
Accuracy: 0.5 dBm
Analyzer, Agilent Model
Audio frequency range: 30 to 9960 Hz
E4440A (E4440A), Power meter,
Accuracy: 0.075 Hz
Agilent Model E4419B
AM range:0 to 95 %
(E4419B), and Sensor module,
Accuracy: 0.25%
Agilent Model N5532A, Option
FM range: 0 to 15 kHz
504 (N5532A, Option 504) and
Accuracy: 2% of reading
U3030-H06 Avionics Measuring
Range: 0 to 359.99 degrees
Receiver (AMR) Software for
Accuracy: 0.0825
VOR / ILS Measurements
Range: 100 to 900 mV
Agilent, Model 54831M
Accuracy: 12.5 mV
(OS-303/G)
RF REFERENCE SOURCE Range: 29 to 400 MHz
Fluke, Model 9640A-LPN
Accuracy: 125 Hz
(9640A-LPN)
Range: -33 dBm to +16 dBm
Accuracy: 0.25 dBm
RF WATT METER
Range: 0 to 14 dBW
Bird, Model 4421 (4421) w/
Accuracy: 0.25 dBW
Directional power sensor,
Model 4022 (4022)