Chroma 63600 Series User Manual

Programmable DC Electronic Load 63600 Series Operation & Programming Manual
7-4
7.3.1.3 Checking Low 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 till VFD shows CC
and press to light up the L range LED indicator.
C. Press to enter into CC Mode for setting. Use rotary knob and or to
program the current listed in Table 7-6.
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 7-6. Press to enable the load and wait for 30
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.
Table 7-6
Model
CCL Current
Setting
Shunt Current
Front Panel Display
Reading
Max.
Min.
63630-600-15
0.15 A
0.1503A
0.1497A
DMM Ai ±0.15mA
0.15mA
0.3mA
0.2μA
DMM Ai ±0.075mA
63640-150-60
1A
1.0008A
0.9992A
DMM Ai ±0.8mA
10mA
10.404mA
9.596mA
DMM Ai ±0.404mA
63630-80-60
0.6 A
0.6012A
0.5988A
DMM Ai ±0.6mA
2mA
2.6mA
1.4mA
DMM Ai ±0.3mA
63610-80-20
0.2 A
0.2004A
0.1996A
DMM Ai ±0.2mA
2mA
2.2mA
1.8mA
DMM Ai ±0.1mA
63640-80-80
0.8 A
0.8016A
0.7984A
DMM Ai ±0.8mA
2mA
2.8mA
1.2mA
DMM Ai ±0.4mA
E. To set output voltage of DC source and CCL current listed in Table 7-7 for testing
model. Press to enable the load and slowly decrease the dc source voltage until
DMM(V) display reached minimal operation voltage of the Table 7-7 for testing model.
The current of load can be recorded from current shunt = DMM (I) voltage/current shunt
resistor.
Table 7-7
Model
Output Voltage
for DC Source
Setting
Minimal
Operation
Voltage
CCL Current
Setting
Shunt Current
Max. Min.
63630-600-15
3V
2V
0.15A
0.1503A
0.1497A
63640-150-60
2V
0.3V
1A
1.0008A
0.9992A
63630-80-60
2V
0.5V
0.6A
0.6012A
0.5988A
63610-80-20
2V
0.5V
0.2A
0.2004A
0.1996A
63640-80-80
2V
0.4V
0.8A
0.8016A
0.7984A
MODE
RANGE
EDIT
LOAD
LOAD

Chroma 63600 Series Specifications

General

Series	63600
Operating Temperature	0°C to 40°C
Modes	CC, CV
Interface	GPIB, USB
Protection	OCP, OTP, OVP
Voltage Resolution	1mV
Cooling	Forced Air