4.3 Input On/Off control
4.3.1 On/Off operation
On/Off button on the front panel is used to manually toggle the instrument between its set
mode and an infinite impedance state, i.e control input on and off. On/Off button lighted
indicates the load input is on, meanwhile the
4.3.2 Short
Short circuit simulation and short circuit current measuremen:you may press
1(short) botton to emulate a short state.It can be used to check whether the tested
instrument's short protection is avaiable.
In short mode,the DC load will draw maximum current from the DC supply in any of the
four operation modes(CC,CV,CW or CR).In CC,CV,or CR mode,you may press
(Shift)+1(short) to stop short.The DC load will return to its previous
operation.However,in CW mode,the short current will continue to be drawn.To stop the
short,you must press the On/Off key after you press
When emulating a Short in CC, CW or CR mode, the maximum allowable short current is
equal to the 110% of current range.
4.4 System menu (System)
Press
(Shift)+ 8(System)to enter the system menu.
POWER-ON
RST(default)
POWER-ON
SAV0
BUZZER
ON(default)
BUZZER
OFF
KNOB
UPDATE(default)
KNOB
OLD
SOURCE
MANUAL(Def)
TRIGGER
EXTERNAL
BUS
User Manual
OFF
indicator will disappear.
(Shift)+1(short).
Power on state of instrument
Do not remember state in SAVE 0.Customer
can save a often used data in SAVE 0 to recall
when power on the DC load next time.
Remember state in SAVE 0
Enable audible beep when key is pressed
No sound when key is pressed
The value modified with knob during operation
will be saved after load is off.For example; the
DC load is set to 1A by press CC and turned on
the input.Then increase the setting value to 2A
with knob.When customer turn off load and trun
on again, the setting value changes to 2A.
As explained above, after the DC load is turned
on again,the setting value is 1A instead of 2A
changed with knob.
Set trigger mode
Triggered from the
Triggered from a TTL high signal at the trigger
connector on rear panel
Triggered from a serial bus command 5AH
28
IT8500 USER MANUAL
(Shift)+
(Shift)+
key
(Trigger)
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