SECTION I IDENTIFICATION AND DESCRIPTION

TB 11-6625-2713-50

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Horizontal bandwidth.........................................

Sweep length ......................................................

Sweep calibration ...............................................

Sweep delay ........................................................

Power supply ......................................................

Final procedure...................................................

SECTION I

IDENTIFICATION AND DESCRIPTION

This bulletin provides instructions for the

1. Test Instrument Identification.

calibration of Oscilloscope AN/USM-296A and is to be used by calibration personnel. The

manufacturer's manual was used as the prime data source in compiling these instructions.

The above equipment will be referred to as the "TI" (test instrument) throughout the

bulletin.

a. Model Variations. None.

b. Time and Technique. The time required for this calibration is approximately 6

hours, using the dc and low frequency technique.

2. Calibration Data Card, DA Form 2416

a. Forms, records, and reports required for calibration personnel at all levels are

prescribed by TB 750-25. DA Form 2416 (Calibration Data Card) must be annotated in

accordance with TB 750-25 for each calibration performed.

b. Adjustments to be reported on DA Form 2416 are designated (R) at the end of the

sentence in which they appear tables, the (R) follows the designated adjustment. Report

only those adjustments made and designated with (R).

3. Calibration Description. TI parameters and performance specifications which

pertain to this calibration are listed in table 1.

Table 1. Calibration Description

Test Instrument Parameters

Performance Specifications

Calibrator

Square wave

Duty cycle 50% ±5%

Polarity

Positive going with baseline at zero volts

Output voltage

1 v or 0.3 peak to peak ±1%

Repetition rate

1 kHz ±20%

Risetime

Less than 1 microsecond

Z axis amplifier:

Sensitivity

2 volts peak to peak

Risetime

70 nanoseconds

Input resistance

5 kohms, approximately