SECTION II EQUIPMENT REQUIREMENTS

TB 9-4920-358-35

Table 1. Calibration Description - Continued

Test instrument

Performance specifications

parameters

+(percent of reading plus digits)

Pretrigger amplitude: > 1.5 V; pulse width: 1.0 to 2.0 µs

MODE 4

Interrogation video amplitude:

(TTL level) Low < 0.3 V, High > 2.4 V;

Pulse width: 0.3 to 0.7 µs

Receiver reference code, emergency

Proper ACCEPT/REJECT operation

and I/P

Power supply

TP1 to chassis ground: 0.0 +50 mV dc

TP2 to TP1: +12.0 +0.5 V dc

TP3 to TP1: +5.0 +0.25 V dc

SECTION II

EQUIPMENT REQUIREMENTS

4. Equipment Required. Table 2 identifies the specific equipment to be used in this

calibration procedure. This equipment is issued with Secondary Transfer Calibration

Standards Set AN/GSM-287 or AN/GSM-705. 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 parenthesis.

5. Accessories Required. The accessories required for this calibration are common

usage accessories, issued as indicated in 4 above, and are not listed in this calibration

procedure. The following peculiar accessory is also required for this calibration: Circulator,

P/N 7916840 (5985-01-217-0286).

Table 2. Minimum Specifications of Equipment Required

Minimum use

Manufacturer and model

Common name

specifications

(part number)

MULTIMETER

Range: 0 to 12 V dc

Fluke, Model 8840A/AF/05

Accuracy: +1%

(AN/GSM-64D)

PEAK POWER METER

Range: 0 to -10 dBm

Wavetek, Model 8502A (8502A)

Accuracy: +0.25 dBm

w/power detector, Wavetek, Model

16934 (16934)

RADAR TEST SET

Input:

(AN/UPM-155)

Frequency: 1030 +.05 MHz

Power level: 0 to -10 dBm

Received pulse range: 0 to 3907 ms

Accuracy: +3%

Output:

Frequency: 1080 to 1100 MHz

Accuracy: +0.01%

Pulse source, range: 0 to 1 µs

Power level: 0 to -10 dBm

Oscilloscope:

Timebase: .1 µs to 4 ms +.01%

Amplitude: 0 to 5 V dc +3%

CHANGE 1