KEPCO BOP 5-20DL, Operator'S Manual

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4-2
BOP 5-20DL 081915
FIGURE 4-1. LOCATION OF INTERNAL CALIBRATION CONTROLS
4.2.1 ADJUSTMENT OF (±) 10 VOLT CALIBRATION CONTROLS (A1R31, A1R32)
1. Turn BOP off and remove the cover (see Figure 4-2).
2. Connect a precision digital voltmeter to the Rear Programming Connector terminal 28 (+10V)
referenced to Common (terminal 23, 25, 27, 29, 31 or 33) for +10V adjustment.
3. Turn the BOP on and locate the +10V CAL control, A1R31 (see Figure 4-2).
4. Adjust control to +10V ±0.1mV as read on the digital voltmeter.
5. Connect a precision digital voltmeter (DVM) to terminal 22 (–10V) of the Rear Programming
Connector referenced to Common (terminal 23, 25, 27, 29, 31 or 33) for –10V adjustment.
6. Adjust –10V CAL control, A1R32 (see Figure 4-2) to –10V ±0.1mV as read on DVM.