Chroma 61605 - 4 Calibration; Introduction; MANUAL CALI Functional List

Calibration
4-3
4.2.1 Output Voltage & Voltage Measurement Calibration
Users can enter CALIBRATION CHOICE page after pressing password, see 4.2. Then,
press
1 , ENTER , to do the output voltage and voltage measurement calibration.
In this step A of V OUT AND MEAS. ACCURACY CALI, the user should keyin the AC
source's DC output voltage measured by digital voltage meter ( DVM ) in mV. Then, monitor
the reading of DVM, keyin the DC output voltage repeatedly until DC output is less than ±10
mV.
1. The Vdc offset may be positive or negative. The positive of DVM
connect to the Line of AC source output, and the negative of DVM
connect to the Neutral of AC source output. See
Figure 4-1.
2. The load must be off at all steps of V OUT AND MEAS. ACCURACY
CALI.
Then press SHIFT, then  to change to next step.
In this step B of V OUT AND MEAS. ACCURACY CALI., the display shows the offset of Vac
and Vdc measured by AC source. They are produced by internal components. Wait two
seconds then press
ENTER
, then Vac = 0.00, Vdc = 0.00 .
CALIBRATION CHOICE = 1
1. V OUT AND MEAS. 2. I MEAS.
3. EXT V.
1. V OUT AND MEAS. ACCURACY CALI 150V RNG
A. KEYIN THE MEASURED Vdc
Vdc offset = _ mV

1. V OUT AND MEAS. ACCURACY CALI 150V RNG
B. WAIT TWO SECONDS THEN ( ENTER )

Vac = 0.00 V Vdc = 0.00 V 
Please Remove Load Before Calibrating
Press <ENTER>
to start