Chroma 62000H Series Operating & Programming Manual page 121

Open the Breaker to ensure the DC Power Supply is in no load state and press "
4.
to confirm.
Next, the screen appears as shown in Figure 3-143. Press "
5.
current range calibration first. The system will output a fixed voltage and then set the
Electronic Load to load 1.0A current. The cursor will stop at position [1] as shown in
Figure 3-143. Enter the current read by the ULTRASTAB SATURN (DVM) to position
[1] and press "
A P P L Y
S E T L O A D I N G
A C T U A L O U T P U T
6. After 1.5A is calibrated, it is important to turn off the Electronic Load and reconnect the
DC Power Supply to the Current Shunt that covers 20A and close to the rated. For
Prodigit 7550, use 20A current shunt directly.
Press " " to perform 6.7A calibration. The cursor will stop at position [2] as shown
7.
in Figure 3-144. Set the Electronic Load to load 6.700A current. Enter the current
read by the ULTRASTAB SATURN (DVM) to position [2] and press "
Using the calibration of 1.0A and 6.7A, the system will calculate the calibration factor of
low current range.
A P P L Y
S E T L O A D I N G
A C T U A L O U T P U T
For high current range calibration, press "
8.
cursor stops at position [3] as shown in Figure 3-145, set the Electronic Load to load
12.00A current. Enter the current read by the ULTRASTAB SATURN (DVM) to position
[3] and press "
" to confirm it.
ENTER
[C U R R E N T
L O A D I N G A N D P R E S S[ E N T E R ]
C U R R E N T
C U R R E N T= 0 . 0 0 0 0 _ A
Figure 3-143
[C U R R E N T
L O A D I N G A N D P R E S S[ E N T E R ]
C U R R E N T
C U R R E N T= 0 . 0 0 0 0 _ A
Figure 3-144
" to confirm it.
ENTER
ENTER
M E A S C A L I B R A T I O N ]
= 1 . 0 0 0 A
M E A S C A L I B R A T I O N ]
= 6 . 7 0 0 A
" to perform 7.5A calibration. When the
Manual Operation
"
ENTER
" to do the low
[ 1 ]
" to confirm.
ENTER
[ 2 ]
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