B-10 BOP-1K 111315B.27 [SOURce:]CURRent:MODE COMMAND CURR:MODESyntax: 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 involtage or current mode of operation. The default mode is FIXed: the power supply executes com-mands normally, and LIST commands can be issued to establish the parameters and sequence of alist. 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). Whilethe 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 powersupply to settings in effect prior to running the list. If the list runs to completion, the settings of the laststep of the list will be in effect.Issuing CURR:MODE HALT while the list is running will stop the execution of the list at the end of thecurrent cycle.CURR:MODE TRAN nn causes the next CURR: or VOLT: command to produce a transient pulse ofnn Seconds duration. (Similar to VOLT:MODE TRAN (see PAR. B.95 for examples). If the time nnexceeds 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 main channel,whether voltage or current (see PAR. 3.4). Identical to VOLT:MODE EXT.CURR:MODE GAIN Configures the unit to use an external reference to provide a proportional out-put current.CURR:MODE PROT - allows CURR command to accept values up to the protection limits of thepower supply without generating an error. For example for a BOP 36-28MG in current mode, aftersending CURR:MODE PROT, sending CURR 28.3 would set the protection levels to 28.3 and mainchannel 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 GAINDescription: Identifies active current mode. Returns LIST while list is being executed. Returns TRANSIENT afterCURR:MODE:TRAN command has been issued, but before CURR: or *TRG command executes thetransient. 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) outputcurrent.Description: Establishes both the positive and negative protection limits for current, the maximum current the unit isset 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.orsink
