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B.27 [source:]current:mode command, B.28 [source:]current:mode? query, B.30 [source:]current[:level]:protect[:both] query – KEPCO BOP 1KW-MG Operator Manual, Firmware Ver.4.08 to 4.11 User Manual

Page 164: B.27, Sour, B.28, B.29, B.30, B.27, b.28, B.29, b.30

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B-10

BOP-1K 070212

B.27 [SOURce:]CURRent:MODE COMMAND

CURR:MODE

Syntax:

Short Form: [SOUR:]CURR:MODE (FIX | LIST | TRAN | EXT | GAIN | PROT)
Long Form: [SOURce:]CURRent:MODE (FIXed | LIST | TRANsient | EXTernal | GAIN | PROTect)
nn = = time in Seconds for transient (from 0.0005 to 2.0)

Description: Allows the user to execute or stop a list, to execute a transient or to use an external reference.

The default mode is FIXed: the power supply executes commands normally, and LIST commands can
be issued to establish the parameters and sequence of a list. This command affects the main channel,
whether voltage or current.

When CURR:MODE LIST is issued, a list is executed (See LIST commands and Figure B-5). While

the list is being executed, LIST commands are not accepted and will produce a command error.

Issuing CURR:MODE FIX while the list is running will stop the execution of the list and return power

supply to settings in effect prior to running the list. If the list runs to completion, the settings of the last
step of the list will be in effect.

CURR:MODE TRAN nn causes the next CURR: or VOLT: command to produce a transient pulse of

nn Seconds duration. (Similar to VOLT:MODE TRAN (see PAR. B.96 for examples). If the time nn
exceeds 2 Seconds, error message -222 “dwell or frequency out range” is posted to the error queue.

CURR:MODE EXT Configures the unit to use an external reference to change the output current.
CURR:MODE GAIN Configures the unit to use an external reference to provide a proportional out-

put current.

CURR:MODE PROT - allows main channel (CURR or VOLT) to accept values up to the protection

limits of the power supply without generating an error. For example for a BOP 36-28MG in voltage
mode, after sending CURR:MODE PROT, sending CURR 28.3 would set the protection levels to 28.3
and main channel level to 28.
Related Commands: LIST commands. (See example, Figure B-5.)

B.28 [SOURce:]CURRent:MODE? QUERY

CURR:MODE?

Syntax:

Short Form: [SOUR:]CURR[:LEV]:MODE?
Long Form: [SOURce:]CURRent[:LEVel]:MODE?
Return value: FIXED, LIST, TRANSIENT, EXTERNAL or GAIN

Description: Identifies active current mode. Returns LIST while list is being executed. Returns TRANSIENT after

CURR:MODE:TRAN command has been issued, but before CURR: or *TRG command executes the
transient. Returns FIXED while in fixed (default) mode of operation. Returns EXT or GAIN when exter-
nal reference is to be used to either program output current or provide proportional output current,
respectively. Related Commands: LIST commands. (Similar to VOLT:MODE?, see Figure B-5.)

B.29 [SOURce:]CURRent[:LEVel]:PROTect[:BOTH] COMMAND

CURR:PROT[:BOTH]

Syntax:

Short Form: [SOUR:]CURR[:LEV]:PROT:BOTH
Long Form: [SOURce:]CURRent[:LEVel]:PROTect:BOTH
where is between minimum (box) value (Figure 1-3) and 1% above rated (nominal) output
current.

Description: Establishes both the positive and negative protection limits for current, the maximum current the unit is

set up to source and sink; maximum is 1% greater than rated output current.

B.30 [SOURce:]CURRent[:LEVel]:PROTect[:BOTH] QUERY

CURR:PROT[:BOTH]?

Syntax:

Short Form: [SOUR:]CURR[:LEV]:PROT[:BOTH]?
Long Form: [SOURce:]CURRent[:LEVel]:PROTect[:BOTH]?
Returns ,

Description: Identifies the protection limits for current (source, sink), the maximum current the unit will source.or

sink