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B.93 [SOURce:]VOLTage:MODE? QUERY
Syntax:
Short Form: [SOUR:]VOLT[:LEV]:MODE?
Long Form: [SOURce:]VOLTage[:LEVel]:MODE?
Return value: FIX, LIST, TRANS, EXT, or GAIN
Description: Identifies active voltage mode. See PAR. B.92 for further details Related Commands: LIST com-
mands. (See example, Figure B-5.)
B.94 [SOURce:]VOLTage[:LEVel]:PROTect:BOTH COMMAND
Syntax:
Short Form: [SOUR:]VOLT[:LEV]:PROT[:BOTH] <value>
Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:[BOTH] <value>
where <value> is between minimum (box) value (Figure 1-3) and 1% above rated (nominal) output
voltage.
Description: Establishes the both the positive and negative protection limits for voltage. If the protection limits are
not identical the unit automatically reduces the appropriate limit (see Figure B-9).
NOTE:
The power supply is assumed to be operating in constant voltage mode.
volt:protect:limit:pos 5
volt:protect:limit:neg 15
volt:protect 10
volt:prot:pos?
volt:prot:neg?
volt:protect 18
volt:prot:pos?
volt:prot:neg?
FIGURE B-9.
USING PROT:LIM:POS AND PROT:LIM:POS COMMANDS TO SET ASYMMETRICAL LIMITS
B.95 [SOURce:]VOLTage[:LEVel]:PROTect[:BOTH]? QUERY
Syntax:
Short Form: [SOUR:]VOLT[:LEV]:PROT[:BOTH]?
Long Form: [SOURce:]VOLTage[:LEVel]:PROTect[:BOTH]?
Returns <exp_value>,<exp_value>
Description: Identifies the protection limits for voltage (positive, negative); maximum is 1% greater than rated out-
put voltage.
B.96 [SOURce:]VOLTage[:LEVel]:PROTect:MODE COMMAND
Syntax:
Short Form: [SOUR:]VOLT[:LEV]:PROT:MODE (EXT | FIX | LESS |)
Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:MODE (EXTernal | FIXed | LESSer |)
Description:Determines how voltage protection limits are controlled.
FIXED - Allows the limits to be controlled by digital signals from either the keypad (if the unit is in local
mode) or SCPI command (if the unit is in remote mode).
EXTERNAL: Allows the limits to be controlled by analog signals applied to the analog port; limits set
from the keypad or SCPI command have no effect (see PAR. 3.3.6.1).
LESSER LIMIT: Allows protect limit to be automatically selected from either 1) the external analog
voltage applied to the Analog I/O port or 2) the value set from the keypad or SCPI command). Which-
ever limit has a lower absolute value (closest to zero) has effect
B.97 [SOURce:]VOLTage[:LEVel]:PROTect:MODE? QUERY
Syntax:
Short Form: [SOUR:]VOLT[:LEV]:PROT:MODE?
Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:MODE?
Returns FIX, EXT or LESS
Description: Identifies how voltage protection limits are controlled: FIX for Fixed, EXT for external, LESS for the
lesser of the internal (fixed) and external protection limit values (See PAR. B.96 for details).
B-26
Sets positive voltage protection limit to +5V.
Sets negative voltage protection limit to -15V.
Attemps to set voltage protection levels to ±10V. No error generated.
Returns 5 (positive voltage protection set to +5V since 5 is less than
10.
Returns 10 (negative voltage protection set to -10V.
Sets both voltage protection limits to +18V. No error generated.
Returns 5 (positive voltage protection set to +5V since 5 is less than
18.
Returns 15 (negative voltage protection set to -15V, since 15 is less
than 18
VOLT:MODE?
VOLT:PROT[:BOTH]
VOLT:PROT[:BOTH]?
VOLT:PROT:MODE
VOLT:PROT:MODE?
BOP-1K 080709
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