B&K 281 - Detailed Calibration Steps; Instrument Disassembly Diagram

зь 4
11;
—DCV
ACV
ACV
ACV
OHMS
1KV
10V
100V
100mV
1Ko
10MQ
‚ш
Ae)
+5VDC +10% Readout should return to 00. If
“not, return R36 CW and repeat
step.
100mV Adjust R32 AC ZERO for .01
readout.
100mV AC Readout.should return to 00; if
not readjust, R32 and recheck
step 7. Repeat until unit reads
.01 on 10V range and 00 on 100V
range.
100mV AG Adjust R29 AC CAL for 100
readout.
1.00K Adjust R102 OHMS CAL for
Resistance 1.00 readout.
10.0M Adjust R14 10 MEG CAL for
Resistance 10.0 readout.
Figure 4. Disassembly
15