Boonton 4240 RF Power Meter - Manual (Page 74)

Boonton 4240 Series RF Power Meter
5.5.3 CALibration Subsystem
ommands is used to control automatic zero offset and linearity adjustments to the RF power
or a l to
applied to n
he numeric suffix of the CALibration commands refers to a measurement channel, that is CALibration1 and CALibration2
refer to C 2 inp
ote tha n2 co lthough
ALibra letion of
e zero or calibration process. This allows the user to determine when the process has completed, and whether or not it was
ccessful.
CALibr al
Description: Performs a multi-point sensor gain calibration of the selected sensor with the internal 50 MHz
nearity at a number of points across its entire
dynamic range.
Returns: 0 if successful, 1 otherwise (using query form only)
CALibr al
Description: Performs a calibration at a fixed frequency and level. Fixed-cal does provide for automatic control
tput level to 0 dBm prior to performing the
calibration. The RF output level of any other source in use must be set to 0 dBm by the user.
Syntax: CALibration[1|2]:FIXedcal[?]
f successful, 1 otherwise (using query form only)
ALibration
Description: Performs a zero offset null adjustment. The sensor does not need to be connected to any calibrator
turn off
the internal calibrator prior to zeroing to avoid the need to perform this step explicitly.
Syntax: CALibration[1|2]:ZERO[?]
Returns: 0 if successful, 1 otherwise (using query form only)
T
sens he CALibration group of c
nd the channe which it is connected. Zero offset adjustment can be performed at any time if no RF signal is
the sensor. Li earity calibration requires that the sensor be connected to the instrument’s built-in RF calibrator.
T
H1 and CH ut channels, respectively.
N t CALibratio mmands will generate an error if used with a single channel Model 4241. Also note that a
tion commands do not accept any arguments, all have a query form, which returns a status code upon comp C
th
su
ation:AUTOc
calibrator. This procedure calibrates the sensor’s li
Syntax: CALibration[1|2]:AUTOcal[?]
ation:FIXedc
of the internal 50 MHz calibrator setting the ou
Fixed-cal assumes that a valid Zero has already been performed.
Returns: 0 i
C :ZERO
for zeroing – the procedure is often performed in-system. However, this command will
Remote Operation
5-14