Esistance, Ubsystem – AMETEK PLA-PLW Programming Manual User Manual

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ESISTANCE

UBSYSTEM

This subsystem programs the CR (constant-resistance mode) function of a single electronic
load.

[SOURce:]RESistance[:LEVel][:IMMediate], RSET
[SOURce:]RESistance[:LEVel]:TRIGgered

Channel-Specific Resistance Command/Query. This is an implied keyword that specifies the
value of the programmed resistance level and whether that level is to be applied immediately or on
occurrence of a trigger. If the specified channel is in the CR (Constant-Resistance) Mode, an
IMMediate resistance 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 CR (Constant-resistance) 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 CR mode. Triggered levels are processed by the Resistance Subsystem even when the electronic
load is not in the CR Mode. In this case, the TRIGgered level becomes a stored IMMediate level that
takes effect when the electronic load is again in the CR Mode.

Until they are explicitly programmed, triggered levels will assume their corresponding immediate
levels. For example, if a electronic load is powered up and RES is programmed to 10, then RES:TRIG
will also be 6 until you program it to another value. Once you program RES:TRIG to a value, it will
remain at that regardless of how you subsequently reprogram RES. Then, when the trigger occurs,
the RES is set to the RES:TRIG value.

Note : Setting an IMM resistance level to the same value as the most recent TRIG resistance level will
not deactivate a pending TRIG level. You must use ABORt to deactivate it.

Specify the input resistance level for the RESistance mode.

Ϯ On

a TRIG[:IMM] command (always)

Ϯ On

receipt of an external trigger signal (if TRIG:SOUR is set to EXT)

Ϯ On

receipt of a GPIB (if TRIG:SOUR is set to BUS)

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

RESistance
RESistance:TRIGgered
RSET

Parameters

Refer to model specifications | MIN | MAX

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

RESistance?
RESistance? MIN

RESistance? MAX

RESistance:TRIGgered?

RESistance:TRIG? MIN

RESistance:TRIGgered? MAX

RSET?
RSET?

MIN RSET? MAX