Chroma 61602 User Manual

Calibration
4-5
4.2.2 Current Measurement Calibration
Users can enter CALIBRATION CHOICE page after pressing password, see 4.2. Then,
press
2 , ENTER, to do the current measurement calibration.
In above step A of CURRENT MEAS. ACCURACY CALI., the display shows the offset of Iac
and Idc measured by AC source. They are produced by internal components. Wait two
seconds then press
ENTER, then Iac = 0.00A, Idc = 0.00A.
Then press SHIFT, then  to change to next step.
In above step B of CURRENT MEAS. ACCURACY CALI., press ENTER then AC source will
output 12.5VAC. The user should apply suitable load to output, to make the output current
measured by current meter ( or power analyzer ) be about 1.6A ( for 61604 ). The different
model shows different current value in display. If the output current is ok after applying load,
press
ENTER, then AC source will output 125VAC. The output current will be 10 times of
step B, 16A. Key in the exact value of current measured by current meter. The output
current of step B. and step C. are shown as below:
Model
Step B.
Step C.
61601 (500 VA)
0.4 A
4 A
61602 (1000 VA)
0.8 A
8 A
61603 (1500 VA)
1.2 A
12 A
61604 (2000 VA)
1.6 A
16 A
Step C is the final step of CURRENT MEAS. ACCURACY CALI. Press PAGE/EXIT to exit
that page. Then display will show as below. Press ENTER to save the calibration result.
CALIBRATION CHOICE = 2
1. V OUT AND MEAS. 2. I MEAS.
3. EXT Vref.
1. CURRENT MEAS. ACCURACY CALI 150V RNG
A. WAIT TWO SECONDS THEN ( ENTER )
Iac = 0.00 A Idc = 0.00 A 
1. CURRENT MEAS. ACCURACY CALI 150V RNG
B. ( ENTER ) THEN CHECK CURRENT IS 1.6A
C. ( ENTER ) THEN KEYIN CURRENT MEAS. 16A
0.00 A 

Chroma 61602 Specifications

General

Model	61602
Category	Power Supply
Output Type	AC
Display	LCD
Current Resolution	1 mA
Programming Interface	RS-232, GPIB
AC Input	200-240 V
Voltage Resolution	0.1 V