Manual Operation
3-65
[ C U R R E N T M E A S C A L I B R A T I O N ]
S E T L O A D I N G C U R R E N T = 7 . 5 0 0 A
A C T U A L
O U T P U T C U R R E N T
= 0 . 0 0 0 0 _ A
[ 3 ]
Figure 3-114
11. Once the 7.5A point was calibrated,
it is important
to turn the loading of Electronic
Load off reconnect the DC Power Supply to current shunt whose rating is closest to but
still cover 20A. For Prodigit 7550, use 20A shunt directly.
12.
Press “
” to perform 19.5A calibration. The cursor will stop at position [4] as
Figure 3-115 shows for setting the loading current of Electronic LOAD to 19.500A. Enter
the current read by Current Shunt (DVM) to position [4]
and press “
ENTER
” to confirm
and wait for it to end. Use 7.5A and 19.5A for calibration, the system will calculate the
calibration factor for the high current range.
[ C U R R E N T M E A S C A L I B R A T I O N ]
S E T L O A D I N G C U R R E N T = 1 9 . 5 0 0 A
A C T U A L
O U T P U T C U R R E N T
= 0 . 0 0 0 0 _ A
[ 4 ]
Figure 3-115
13. The current calibration is done once the above actions are completed. To save the
calibration data, press “
SAVE
” will prompt a confirmation page as Figure 3-116 shows.
Press “
1
” or “Rotary” (
) to set SAVE=YES and press “
ENTER
” to save it. If
there is no need to save it, press “
EXIT
” to return to the Calibration screen.
[ S A V E A R G U M E N T ]
S A V E = N O
Figure 3-116
14.
Press “
EXIT
” to return to the MAIN PAGE.
WARNING
Improper shunt range selection may cause damage to the current shunt.
