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KLR-DEV 060713 B-15

B.56 [SOURce:]VOLTage:[LEVel:]TRIGgered[:AMPLitude] COMMAND VOLT:TRIG

Syntax: Short Form: [SOUR:]VOLT:[LEV:]TRIG[:AMPL] <exp_value> MAX

Long Form: [SOURce:]VOLTage:[LEVel:]TRIGgered[:AMPLitude] <exp_value> MAX

<exp_value> = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1

Description: Programs voltage value to be transferred to output by *TRG commands. Actual output voltage

will depend on load conditions. VOLT:TRIG MAX programs output voltage value to be transferred by

*TRG to be the lower of VOLT:LIM:HIGH or 80% of VOLT:PROT. If the value exceeds the maximum for

the model being programmed, error message -222,”Data out of range” is posted in output queue. If

value exceeds VOLT:LIM:HIGH value, a value corresponding to the voltage limit will be programmed.

This value is automatically checked after execution of VOLT:LIM:HIGH and VOLT:PROT, and is set to

zero volts if there is a conflict. NOTE: A current trigger must be entered at least once. (See example,

Figure B-1.)

B.57 [SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPLitude]? QUERY VOLT:TRIG?

Syntax: Short Form: [SOUR]:VOLT[:LEV]:TRIG[:AMPL]? MAX

Long Form: [SOURce]:VOLTage[:LEVel]:TRIGgered[:AMPLitude]? MAX

Return Value: <exp_value> = digits with decimal point and Exponent, e.g., 2.71E+1 for 27.1

Description: Returns value representing voltage value to be programmed by *TRG command established by

VOLT:TRIG command). VOLT:TRIG? MAX returns maximum permissible value that can be pro-

grammed by VOLT:TRIG (the lower of VOLT:LIM:HIGH and 80% of VOLT:PROT) (See example, Fig-

ure B-1.)

FIGURE B-5. PROGRAMMING AS VOLTAGE STABILIZER

NOTE: The following example assumes KLR 75-32 with limit model set for 36V, 32A and output operat-

ing in voltage stabilization mode. See Figure B-3 for directions on programming limit model set-

tings.

VOLT 21.8;CURR .5 Programs output voltage for 21.8V, output current for 0.5A.

OUTP ON Enables output. NOTE: Load determines output operating mode; if

load resistance is greater than 21.8/0.5, output will operate as

voltage stabilizer.

MEAS:VOLT? Returns measured output voltage, approximately 2.18E1 (21.8V)

assuming voltage stabilizer operation.

VOLT? Returns 2.18E1 ( (21.8V, programmed output voltage).

VOLT 2.15 Programs output voltage to 2.15V.

VOLT? Returns 2.15E0 (2.15V, programmed output voltage).

VOLT? MAX Returns 3.6E1 (36V, the limit model voltage setting).

VOLT? MIN Returns 0 (minimum allowable program voltage).

VOLT:PROT 6.5 For this model, minimum overvoltage protection is 0.2 x 75 = 15V,

therefore power supply returns error message -222 (Data out of

range, ESR bit 4 =1) and the limit remains unchanged.

VOLT:PROT 25 Sets overvoltage protection limit to 25V.

VOLT:PROT? Returns 2.5E1 (25V).

VOLT 26 Returns error message -301 (Value bigger than limit, ESR bit 3=1)

and voltage setting remains unchanged at 2.15V.

VOLT:PROT?MAX Returns 9E1. Maximum allowable overvoltage protection limit for

model is 90V, 20% above maximum voltage (75V for KLR 75-32).

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