KEPCO BIT 4882F - Manual (Page 28)

3-8
BIT 4882 030507
3.11 CURRENT READING CALIBRATION (R20)
NOTE: The Full Scale Output Current Adjustment (PAR. 3.9) must be done before performing
the following procedure, and the PRECISION 4-TERMINAL SHUNT should be still
connected to the power supply output terminals.
1. Program the BOP Power Supply for PLUS FULL SCALE CURRENT, less one percent (verify
by reading external DVM). E.g., for 20V
• If using SCPI send
FUNC:MODE CURR;:CURR zz;VOLT MAX
• If using CIIL send
FNC DCS:CH1 CURR zz with VLTL 20
where
zz = aa - (aa/100)
where aa is the maximum rated output current of the
BOP (e.g., for BOP 20-10M,
zz
= 10-(10/100) = 9.9).
2. MEASURE the output current using programming commands, then check the readback
data.
• In SCPI send
MEAS:CURR?
then check the readback data.
• In CIIL: send
FNC DCS:CH1 GAL
F0
INX CURR
FTH CURR
NOTE: For subsequent measurements using CIIL it is only necessary to send
INX
CURR
and
FTH CURR
commands.
3. Locate CURRENT READ. CAL. control R20 (see Figures 2-1 and 3-1, refer to Table 3-1).
4. Adjust control R20, until the measured value matches the programmed value using MEA-
SURE commands (see step 2) as needed.