TB 9-6625-2325-24
Figure 1. Test points and adjustment locations - top view.
8. Low and Midband Accuracy
a. Performance Check
(1) Connect calibrator OUTPUT HI and LO to TI INPUT.
(2) Press and release all front panel pushbuttons to out position, except LO
RANGE ENABLE and POWER.
(3) Connect a short between TP204 and TP209 (fig. 1).
(4) Set calibrator for a 1 V, 500 Hz output. Record TI indication.
(5) Press RANGE HOLD/AUTO pushbutton to HOLD.
(6) Set calibrator for a 0.1 V, 500 Hz output. If TI does not indicate one-tenth of
value recorded in (4) above, perform b (1) and (2) below.
(7) Press and release RANGE HOLD/AUTO pushbutton to AUTO.
(8) Set calibrator for a 2.5 V dc output.
(9) Press FUNCTION AC+DC/AC pushbutton to AC+DC. If TI does not indicate
between 2.388 and 2.612 V, perform b (3) below.
(10) Set calibrator for a 0.25 V dc output. If TI does not indicate between 0.2388 and
0.2612 V, perform b (4) below.