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7.3.1.2 Checking Medium Current Range
A.
Connect the Load, DC source, DMM, current shunt as Figure 7-1 shows. Use DMM (I)
to measure the voltage that passes through the shunt resistor measurement port, and
get the load current.
B.
Select the right range for the current shunt resistor. Press
RANGE
and press
EDIT
C.
Press
to enter into CC Mode for setting. Use rotary knob and
program the current listed in Table 7-4 .
D.
Turn on the DC source and set output voltage to 5V. Set current limit of DC source
larger than the set current of Table 7-4. Press
seconds. Then record the shunt current and the front panel displayed readings. The
current of load can be recorded from current shunt = DMM (I) voltage/current shunt
resistor.
Model
63630-600-15
63640-150-60
63630-80-60
63610-80-20
63640-80-80
E.
To set output voltage of DC source and CCM current listed in Table 7-5 for testing
LOAD
model. Press
DMM(V) display reached minimal operation voltage of the Table 7-5 for testing model.
The current of load can be recorded from current shunt = DMM (I) voltage/current shunt
resistor.
Output Voltage
Model
for DC Source
63630-600-15
63640-150-60
63630-80-60
63610-80-20
63640-80-80
to light up the M range LED indicator.
Table 7-4
CCM Current
Setting
Max.
1.5 A
1.5mA
6A
0.1A
0.10244A
6.0 A
0.02A
2.0 A
5mA
8.0 A
0.02A
to enable the load and slowly decrease the dc source voltage until
Table 7-5
Minimal
Operation
Setting
Voltage
3V
2V
3V
1.8V
2V
0.5V
2V
0.5V
2V
0.4V
MODE
LOAD
to enable the load and wait for 30
Shunt Current
Min.
1.503A
1.497A DMM Ai ±1.5mA
3mA
2uA DMM Ai ±0.75mA
6.0048A
5.9952A DMM Ai ±4.8mA
0.09756A DMM Ai ±2.44mA
6.012A
5.988A DMM Ai ±6mA
0.026A
0.014A DMM Ai ±3mA
2.004A
1.996A DMM Ai ±2mA
7mA
3mA DMM Ai ±1mA
8.016A
7.984A DMM Ai ±8mA
0.028A
0.012A DMM Ai ±4mA
CCM Current
Setting
1.5A
6A
6.0A
2.0A
8.0A
Verification
till VFD shows CC
or
Front Panel Display
Reading
Shunt Current
Max.
Max.
1.503A
1.497A
6.0048A
5.9952A
6.012A
5.988A
2.004A
1.996A
8.016A
7.984A
to
7-3
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