Calibration Procedure
8-1
8. Calibration Procedure
Calibration equipment:
1. Standard resistance 10m/100m/150m/500m Ω
2. Agilent 34401A Digital Multimeter or above
3. Yokogawa TYPE 2215 50A Current Shunt or above
Before process this section the tester should be warm up at least 30 minutes. Press the
calibration switch (CAL), it is equipped with hardware protection circuit to avoid calibration
data loss.
The following items are needed to calibrate:
GBA 45A Offset (3A) ;GB current OFFSET point
GBA 45A Full (30A) ;GB current FULL point
GBVX1 8V Offset (0.3V) ;GB voltage X1 OFFSET point
GBVX1 8V Full (3V) ;GB voltage X1 FULL point
GBVX10 8V Offset (0.03V) ;GB voltage X10 OFFSET point
GBVX10 8V Full (0.3V) ;GB voltage X10 FULL point
CONTRAST VALUE 6 ;Contrast Value
8.1 Calibration Menu
1. After powered on and initialized, press function key [MENU] [DOWN] [DOWN] [DOWN]
[SELECT] in sequence to enter CALIBRATION function. Display input calibration
password menu.
2. Press function key [A] [A] [A] [B] [SELECT] in sequence. Display calibration menu.
8.2 Start Calibration
Connect Yokogawa TYPE 2215 Current Shunt (50 mV, 50A, with four terminals) or equivalent
shunt to Sense and Drive terminal of 19572. By using 34401A DMM to set ACV Meter and
Auto Range function simultaneously, measure TYPE 2215 Current Shunt SENSE +/-
terminals.
Display GBA 45A OFFSET (3A) ; Grounding current offset.
3.00A
Press [STOP] [START] ; Read out the ACV meter value
; Example 2.897mV
Press [INC.] or [DEC.] until 19572 LCD STANDARD display 2.897 A
Press [ENTER] ; Save calibration value into the memory
Press [STOP] ; Stop GBA offset calibration.
Press [UP] key to display
Display GBA 45A FULL (30A) ; Grounding current full scale.
30.00A
Press [STOP] [START] ; Read out the ACV meter value
; Example 29.87mV
To Next Page
Loading...
