Stanford Research Systems DS345, Manual

Page: 11 / 139

Abridged Command List
ix
Syntax
Variables i,j are integers. Variable x is a real number in integer, real, or exponential notation.
Commands which may be queried have a ? in parentheses (?) after the mnemonic. The ( ) are not sent.
Commands that may
only be queried have a '?' after the mnemonic. Commands which may not be queried
have no '?'. Optional parameters are enclosed by {}.
Function Output Control Commands
AECL Sets the output amplitude/offset to ECL levels (1Vpp, -1.3V offset).
AMPL(?) x Sets the output amplitude to x. x is a value plus units indicator. The units can be VP
(Vpp), VR (Vrms), or DB (dBm). Example: AMPL 1.00VR sets 1.00 Vrms.
ATTL Sets the output amplitude/offset to TTL levels (5 Vpp, 2.5 V offset).
FREQ(?) x Sets the output frequency to x Hz.
FSMP(?) x Sets the arbitrary waveform sampling frequency to x Hz.
FUNC(?) i Sets the output function. 0 = sine, 1 = square, 2 = triangle, 3 = ramp, 4 = noise,
5= arbitrary.
INVT(?)i Set output inversion on (i=1) or off (i=0).
OFFS(?)x Sets the output offset to x volts.
PCLR Sets the current waveform phase to zero.
PHSE(?) x Sets the waveform output phase to x degrees.
Modulation control commands
*TRG Triggers bursts/single sweeps if in single trigger mode.
BCNT(?) i Sets the burst count to i.
DPTH(?) i Sets the AM modulation depth to i %. If i is negative sets DSBSC with i % modulation.
FDEV(?) x Sets the FM span to x Hz.
MDWF(?) i Sets the modulation waveform. 0 = single sweep, 1 = ramp, 2 = triangle, 3 = sine,
4 = square, 5 = arbitrary, 6 = none.
MENA(?) i Turns modulation on (i=1) or off (i=0).
MKSP Sets the sweep markers to the extremes to the sweep span.
MRKF(?) i ,x Sets marker frequency i to x Hz. 0 = mrk start freq, 1 = stop freq, 2 = center freq,
3 = span.
MTYP(?) i Sets the modulation type. 0 = lin sweep, 1 = log sweep, 2 = AM, 3 = FM, 4 = PM,
5 = Burst.
PDEV(?) x Sets the phase modulation span to x degrees.
RATE(?) x Sets the modulation rate to x Hz.
SPAN(?) x Sets the sweep span to x Hz.
SPCF(?) x Sets the sweep center frequency to x Hz.
SPFR(?) x Sets the sweep stop frequency to x Hz.
SPMK Sets the sweep span to the sweep marker positions.
STFR(?) x Sets the sweep start frequency to x Hz.
TRAT(?) x Sets the internal trigger rate to x Hz.
TSRC(?) i Sets the trigger source. 0 = single, 1 = internal, 2 = + Ext, 3 = - Ext, 4 = line.
Arbitrary Waveform and Modulation commands
AMRT(?) i Sets the arbitrary modulation rate divider to i.
AMOD? i Allows downloading a i point arbitrary modulation waveform if the modulation type is
AM, FM, or PM. After execution of this query the DS345 will return the ASCII value 1.
The binary waveform data may now be downloaded.