REMOTE PROGRAMMING
4-3
DETAILED COMMAND LIST
The four letter mnemonic in each command sequence specifies the command. The rest of the sequence
consists of parameters. Multiple parameters are separated by commas. Parameters shown in {} are optional
or may be queried while those not in {} are required. Commands that may be queried have a question mark ?
in parentheses (?) after the mnemonic. Commands that may ONLY be queried have a ? after the mnemonic.
Commands that MAY NOT be queried have no ?. Do not send ( ) or { } as part of the command.
All variables may be expressed in integer, floating point or exponential formats ( i.e., the number five can be
either 5, 5.0, or .5E1). The variables i and j are usually integer values, while the variable x is a real number.
MEASUREMENT SETUP COMMANDS
$STL(?) {i}
The $STL command sets the SR715/720's settling time to i milliseconds,
where i is between 2 and 99. The $STL? query returns the settling time.
AVGM(?) {i}
The AVGM command sets averaging off (i=0) and on (i=1). The AVGM?
query returns the averaging status.
BIAS(?) {i}
The BIAS command sets the SR715/720's DC bias to off (i=0), internal (i=1),
or external (i=2). This command will return an error if the SR715/720 is not
set to a capacitance mode (C+D or C+R). The BIAS? query returns the
present bias status.
CIRC(?) {i}
The CIRC command sets the SR715/720's equivalent circuit to series (i=0) or
parallel (i=1). The CIRC? query returns the equivalent circuit setting.
CONV(?) {i}
The CONV command sets constant voltage off (i=0) or on (i=1). The CONV?
query returns the constant voltage setting.
FREQ(?) {i}
The FREQ command sets the drive frequency to 100 Hz (i=0), 120 Hz (i=1), 1
kHz (i=2), 10 kHz (i=3), or 100 kHz (i=4, SR720 only). The FREQ? query
returns the drive frequency.
MMOD(?) {i}
The MMOD command sets the measurement mode to continuous (i=0), or
triggered (i=1). The MMOD? query returns the measurement mode setting.
NAVG(?) {i}
The NAVG command sets the number of measurements to be averaged
when averaging is enabled (see the AVGM command). i may be between 2
and 10. The NAVG? query returns the number of averages.
PMOD(?) {i}
The PMOD command sets the parameter mode to Auto (i=0), R+Q (i=1), L+Q
(i=2), C+D (i=3), or C+R (i=4). The PMOD? query returns the present
parameter mode. Note that relative measurements and binning are not
allowed in Auto parameter mode.
RATE(?) {i}
Sets the measurement rate to fast (i=0), medium (i=1), or slow (i=2). The
RATE? query returns the measurement rate s setting.
RNGE(?) {i}
The RNGE command sets the measurement range to 100 k
Ω
(i=0), 6.4 k
Ω
(i=1), 400
Ω
(i=2), or 25
Ω
(i=3). This command automatically enables range
hold (see the RNGH command). The 100 k
Ω
range is not allowed at 100 kHz
drive frequency. The RNGE? query returns the range.
