Bristol 428 - Page 48

Model 428 User’s Manual REMOTE COMMUNICATIONS
Bristol Instruments, Inc. 48
Measurement Instruction Functions
:POWer?
Description
Returns a power reading in either Watts or dBm as specified by the
:UNIT:POWer function.
Query Response
For a SCALar query, one numeric value is returned. For an ARRay
query, an integer value indicating the number of entries, followed by
comma separated numerical values in fixed point notation.
(e.g., 2, -12.67, -15.49)
Examples
:READ:ARR:POW?
:FETC:SCAL:POW?
:ENVironment?
Description
Returns the instrument's internal temperature in degrees Celsius (ºC)
and pressure in millimeters of mercury (mm Hg). The response is
independent of the choice of SCALar or ARRay.
Query Response
Two numerical values with units separated by a comma (e.g., 28.5 C,
740 MMHG).
Examples
:MEAS:ARR:ENV?
:FETC:ARR:ENV?
:FREQuency?
Description
Returns an input laser reading in units of THz.
Query Response
A single numerical value (e.g., 193.67357) for SCALar.
An integer value indicating the number of entries, followed by an array of
comma separated numerical values (e.g. 2, 193.67357, 193.77482) for
ARRay.
Examples
:FETC:ARR:FREQ?
:MEAS:ARR:FREQ?
:WAVelength?
Description
Returns an input laser wavelength value in units of nm.
Query Response
A single numerical value (e.g., 1531.5877) for SCALar.
An integer value indicating the number of entries, followed by an array of
comma separated numerical values (e.g. 2, 1531.5877, 1532.7832) for
ARRay.
Examples
:FETC:SCAL:WAV?
:READ:ARR:WAV?