Figure 2. Test equipment

Calibration Procedure For Function Generator Sg-1133U Model 3312A Page Navigation
6

TB-9-6625-1968-24

(11) Set MODULATION RANGE Hz switch to 100 and adjust MODULATION

RANGE Hz VERNIER control for a 20 Hz indication on audio analyzer.

(12) Set audio analyzer to measure distortion. If audio analyzer does not indicate <2

percent, perform 9 b (3) through (5) below.

(13) Set audio analyzer to measure frequency.

(14) Set MODULATION RANGE Hz switch to 10k, adjust MODULATION

RANGE Hz VERNIER control for a 1 kHz indication on audio analyzer, and repeat (12) above.

(15) Set audio analyzer to measure frequency.

(16) Adjust MODULATION RANGE Hz VERNIER control for a 10 kHz indication

on audio analyzer, and repeat (12) above.

b. Adjustments

(1) Adjust R283 (fig. 2) and R279 (fig. 2) for an audio analyzer indication <0.5 percent (R).

(2) Repeat (1) above at frequencies of 1, 10, and 50 kHz.

(3) Alternately adjust R342 (fig. 2) and R348 (fig. 2) for an audio analyzer indication

2 percent (R).

(4) Adjust R307 (fig. 2) for an audio analyzer indication <2 percent (R).

(5) Set MODULATION RANGE Hz switch to 10k and adjust MODULATION

RANGE Hz VERNIER control fully ccw. Adjust R302 (fig. 2) for an audio analyzer

indication <2 percent (R).

Figure 2. Test equipment - top view.

10. Square Wave Rise and Falltime

a. Performance Check

(1) Connect TI Vp-p to oscilloscope Vertical 1 input using 50

feedthrough

termination.