TB 9-6625-2343-40
NSN 4931-00-621-7878. Alternate items may be used by the calibrating activity. 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 listed in table 2. The accuracies listed in table 2 provide a four-to-one ratio
between the 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
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
AM/FM TEST SOURCE
Range: AM; 0 to 95%
Hewlett-Packard, Model 11715A
(11715A)
Carrier; 12.5 MHz
Rate; 10 Hz to 10 MHz
ATTENUATOR (FIXED)
Range: 6 dB
Weinschel, Model 9918-6dB
AUDIO ANALYZER
Output: Freq; 50 Hz to 40 kHz
Boonton, Model 1121 (1121)
Ampl; 100 mV to 3 V
Output Accuracy: 1%
Measurement: Distn; <0.025%
Capability
CALIBRATOR
Frequency range: 20 Hz to 30 MHz
Fluke, Model 5720A (5700A/EP)
Output range: 1 mV to 3VAC
(p/o MIS-35947)
MEASURING SYSTEM
Power output: 1mW @ 50 MHz
Tegam, Model IIA; consisting of
Accuracy: 0.3% (0.7%)
1806 dual type 4 power meter;
M1111 thermistor mount
Range: 0 to 50 VDC
Hewlett-Packard, Model 3458A
Accuracy: 0.015%
(3458A)
Range: Vert; 0.02V/div
(OS-303/G)
Horiz; 10 s/div
PISTON ATTENUATOR
Range: 20 to 80 dB
Weinschel, Model PA-2 (PA-2)
Accuracy: Test report values
RANGE CALIBRATOR
Range: 10 W to 100 mW
Hewlett-Packard, Model 11683A
(11683A)
Accuracy: 0.025%
Aeroflex, Model 2023B (2023B) or
Output level: +19 dBm to 500 MHz
(SG-1207/U)
+13 dBm to 1100 MHz
Modulation Capability: AM and FM
AM; 0 to 95%
FM Range; 0 to 400 kHz pk
deviation
Accuracy: AM; 10%
FM; 10%