Each Parameter Setting Data Description; How To Process Test; Offset Value Calibration Of Test Cable; Connecting Dut Methods - Chroma 19572 User Manual

4.7.3 Each Parameter Setting Data Description

The following are the parameter setting data of each test mode.
Ground resistance test mode (GB)
STEP 1 GB
CURR： 3.00A
100mΩ
HIGH：
TIME： 3.0s
3.00-45.0A
CURR : Set ground resistance test needed current.
Note : Because the test current multiply the high limit of resistance can't more than
6.3V. High limit of resistance will be auto modify to adaptable value when it
isn't correspondence with the above condition.
HIGH : Set ground resistance high limit value, the value is 510mΩ or minor value in
6.3V/ CURRENT.
LOW : Set ground resistance low limit value, the value is less than high limit value of
ground resistance or OFF.
TIME : Set test needed time, input 0 means continuous test.
4.8

How to Process Test

4.8.1 Offset Value Calibration of Test Cable

1. In power on menu, enter multi-groups STEPS test menu by pressing Function Key
[MORE..] .
2. Press Function Key [OFFSET], the display will show the menu to indicate the user to
connect the test cable of grounding test applicable to (+), (-) two terminals of DRIVE and
SENSE, then short-circuit the test cable.
3. Press [START], DANGER LED lights on front panel. The current output time is the users'
setting test time. If the test time is CONT., the current output time is five seconds. The
main system start to measure line resistance of test cable and show the value on the
display then store in the memory.

4.8.2 Connecting DUT Methods

Ground resistance test mode (GB)
First of all, confirms there is no current output and DANGER LED isn't light, screws the test
cable and terminal up by using tool and then clipping DUT by test cable.
LOW : OFF
RMT LOCK OFST
Panel Description
UP
DOWN
ENTER
EXIT
ERR
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