Urrent, Ubsystem – AMETEK PLA-PLW Programming Manual User Manual
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C
URRENT
S
UBSYSTEM
This subsystem programs the CC (constant-current mode) function of a single electronic
load.
[SOURce:]CURRent[:LEVel][:IMMediate], ISET
[SOURce:]CURRent[:LEVel]:TRIGgered
Channel-Specific Current Command/Query. This is an implied keyword that specifies the value of
the programmed current level and whether that level is to be applied immediately or on occurrence of
a trigger. If the specified channel is in the CC (Constant-Current) Mode, an IMMediate current level is
transferred to the input as soon as the command is executed. A TRIGgered level is stored and then
transferred to the electronic load input when a trigger occurs. At that time, the change to the input
level occurs at the slew time presently in effect. Following the trigger event, subsequent triggers will
not affect the input level unless the electronic load has been sent another TRIGgered level command.
If the electronic load is not in the CC (Constant-Current) Mode when an IMMediate or TRIGgered level
command is sent, the programmed levels are saved for the time the electronic load is placed in the
CC mode. Triggered levels are processed by the Current Subsystem even when the electronic load is
not in the CC Mode. In this case, the TRIGgered level becomes a stored IMMediate level that takes
effect when the electronic load is again in the CC Mode.
Until they are explicitly programmed, triggered levels will assume their corresponding immediate
levels. For example, if a electronic load is powered up and CURR is programmed to 5, then
CURR:TRIG will also be 5 until you program it to another value. Once you program CURR:TRIG to a
value, it will remain at that regardless of how you subsequently reprogram CURR. Then, when the
trigger occurs, the CURR is set to the CURR:TRIG value.
Note: Setting an IMM current level to the same value as the most recent TRIG current level will not
deactivate a pending TRIG level. You must use ABORt to deactivate it.
Specify the input current level for the CURRent mode.
Ϯ On
a TRIG[:IMM] command (always)
Ϯ On
receipt of an external trigger signal (if TRIG:SOUR is set to EXTernet)
Ϯ On
receipt of a GPIB
Ϯ On
receipt of an Ethernet trigger signal (if TRIG:SOUR is set to ETHernet)
Ϯ On
receipt of *TRG (unless TRIG:SOUR is set to HOLD)
Command Syntax
CURRent
CURRent:TRIGgered
ISET
Parameters
Status and Errors
TRIGgered level commands affect the WTG bit in the Operation
Condition register and the OPC bit of the Standard Event Status Event
register.
Query Syntax
CURRent?
CURRent?
MIN
CURRent?
MAX
CURRent:TRIGgered?
CURRent:TRIGgered? MIN
CURRent:TRIGgered? MAX
ISET?
ISET?
MIN
ISET? MAX