TB 9-4931-495-24
(4) Set START MARKER pointer to the 0-V mark on calibration scale and
connect multimeter to A2TP1 (fig. 3). If multimeter does not indicate between -0.001 and
+0.001 V dc, perform b (3) below.
(5) Set START MARKER pointer to the 10-V mark on calibration scale.
If
multimeter does not indicate between +9.995 and +10.005 V dc, perform b (4) below.
b. Adjustments
(1) Adjust S A2R44 (fig. 1) for 0.000 V dc on multimeter (R).
(2) Adjust P A2R35 (fig. 1) for 10.000 V dc on multimeter (R).
(3) Adjust K A2R41 (fig. 1) for 0.000 V dc on multimeter (R).
(4) Adjust N A2R27 (fig. 1) for 10.000 V dc on multimeter (R).
11. CW Marker (Model 8620A)
a. Performance Check
Connect multimeter to A2TP5 and A2 GND (fig. 2). Press CW pushbutton.
(1)
(2) Set white CW pointer to right end of scale (10 V) and make fine adjustments
for +10 0.001 V dc indication on multimeter.
(3) Move positive lead to A2TP6 (fig. 2) and press START pushbutton.
If
multimeter does not indicate between +9.995 and +10.005 V dc, perform b below.
(4)
(5) Press CW pushbutton and adjust CW control for 4.000 0.001 V dc indication
on multimeter.
(6) Move positive lead to A2TP6 and press START pushbutton. If multimeter
does not indicate between +3.990 and +4.010 V dc, perform b (2) below.
b. Adjustments
(1)
Adjust CWM A2R11 (fig. 2) for 10.000 V dc on multimeter (R).
(2) Adjust CWM A2R11 (fig. 2) for 4.000 V dc on multimeter and repeat a (1)
through (6) above (R).
12. Marker Sweep (Model 8620C)
a. Performance Check
(1) Set STOP MARKER pointer to the 5-V mark on calibration scale and adjust
MANUAL control full ccw.
(2) Set START MARKER pointer to the 0-V mark on calibration scale and press
MARKER SWEEP pushbutton.
(3) Move multimeter positive lead to A2TP5 (fig. 3).
If multimeter does not
indicate between -0.001 and +0.001 V dc, perform b (1) below.
(4) Set START MARKER pointer to the 10-V mark on calibration scale.
If
multimeter does not indicate between +9.995 and +10.005 V dc, perform b (2) below.