Table 2. Minimum Specifications of Equipment Required

Table 1. Calibration Description - Continued

SECTION III. CALIBRATION PROCESS

Calibration Procedure For Radar Test Set An/Tpm-25A (Ts-3394A) Page Navigation
5

TB 9-6625-2211-24

Standards Set AN/GSM-287 and AN/GSM-705. 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

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 parenthesis.

5. Accessories Required. The accessories listed in table 3 are issued as indicated in

paragraph 4 above and are used in this calibration procedure. When necessary, these items

may be substituted by equivalent items unless specifically prohibited.

Table 2. Minimum Specifications of Equipment Required

Minimum use

Manufacturer and model

Common name

specifications

(part number)

ATTENUATOR (FIXED)

Range: 20 dB

Weinschel, Model 9918-20dB (9918)

Accuracy: r1 dB

AUTOTRANSFORMER

Range: 103.5 to 126.5 V ac

Ridge, Model 9020A (9020A)

Accuracy: r1%

FREQUENCY COUNTER

Range: 100 Hz to 1090.109 MHz

Fluke, Model PM6681/656

(PM6681/656)

Accuracy: r0.0025%

MEASURING RECEIVER

Range: 0 to -80 dB

Measuring receiver system N5530S

consisting of: Spectrum Analyzer,

Accuracy: r 0.025 dB

Agilent Model E4440A (E4440A),

Power meter, Agilent Model

E4419B (E4419B), and Sensor

module, Agilent Model N5532A

opt. 504 (504)

MULTIMETER

Range: 4.75 to 28.25 V dc

Hewlett-Packard, Model 3458A

(3458A)

Accuracy: r0.25%

OSCILLOSCOPE

Range: 0.5 to 24 V

Agilent, OS-303/G (OS-303/G)

Accuracy: r3%

Risetime: <18.75 ns

PEAK POWER CALIBRATOR

Range: -3 to +1 dBm

Hewlett-Packard, Model 8900B

Accuracy:

(8900B)

PULSE GENERATOR

Frequency

LeCroy, Model 9210MOD200

Range: 100 Hz to 10 kHz

(9210MOD200) w/plug-ins, LeCroy,

Accuracy:

Models 9211 (9211) and 9215

Pulse width:

(9215) (MIS 45839)

Range: 0.25 to 5 Ps

Accuracy: r0.0125 Ps

Pulse amplitude:

Range: 3 to 5 V

Accuracy: 0.125 V

SIGNAL GENERATOR No. 1

Range: 1075 to 1105 MHz

Aeroflex, Model 2023B (2023B) or

r2.4 x 10-5

SG-1207/U

Accuracy:

VARIABLE ATTENUATOR

Range: 28 to 60 dB

Narda, Model 2936 (2936)

Accuracy:1 Calibration chart

1Combined

accuracy 0.25 dB ( 1.8 dB with attenuator set to 40 dB and below 2.0 dB with attenuator set above 40 dB).

2Accuracy

of frequency counter.

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