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<MEAS DISPLAY> Page
Take 3 series and 2 parallel, 10W LED constant current source for example as below to
illustrate the test method.
Specification:
LED constant current source
Constant power: 10W
Output voltage: DC7~12V
Output current: 900mA
5%
The test method is as below:
If the current mode is not in constant voltage mode
Step 1
Press[Meas] to enter <NRM MEAS PAGE> Page
Step 2
Use soft-key to choose [CV]
Step 3
Use [
◀
] and [
▶
] key to choose output setting digit
Step 4
Use[
▲
] key and[
▼
] key to change the value of setting digit, it can automatic carry or
abdicate or you can use numeric keypad to input set value, press [Enter] key and finish the
setting.
Here we input MAX value 12V (it is equivalent to resistance value 12/0.9 = 13.3
), if
you want to simulate a resistance value, you need to convert to voltage value, for
example, simulation 10
resistance, the pre-set voltage = 10x0.9 = 9V
Step 5
Press q key to boot the load, voltage value is constant as set value, load will operate
normally.
3.3
<SHT MEAS PAGE> Page
Press [Setup] key, then press function key [SHT] to enter <SHT MEAS PAGE> Page.
Figure 3-7 <SHT MEAS PAGE> Page
Short-Circuit [SHT] Page mainly highlights the measured results, and display main
parameter and sub parameter.
AT861x is allowed to simulate a short circuit at the input terminals of load.
If [SHT] mode is under CC/CP/CR mode, the instrument will set the maximum short
circuit current as limit value (when it is in 3A RANGE, the maximum current is around