prog.book : chapter1.fm 51 Mon Feb 15 09:24:37 1999
Power Meter Remote Operation
Setting Offsets
HP E4418B/E4419B Programming Guide 1-51
Setting Offsets
Channel Offsets
The power meter can be configured to compensate for signal loss or gain in
your test setup (for example, to compensate for the loss of a 10 dB
attenuator). You use the SENSe command subsystem to configure the
power meter. Gain and loss correction are a coupled system. This means
that a gain set by [SENSe[1]]|SENSe2:CORRection:GAIN2 is
represented in the [SENSe[1]]|SENSe2:CORRection:LOSS2?
command. If you enter an offset value the state is automatically enabled.
However it can be enabled and disabled using either the
[SENSe[1]]|SENSe2:CORRection:GAIN2:STATe or
[SENSe[1]]|SENSe2:CORRection:LOSS2:STATe commands.
LOSS2 is coupled to GAIN2 by the equation when the default
unit is linear, and when the default is logarithmic.
Note You can only use LOSS2 and GAIN2 for external losses and gains.
LOSS1 and GAIN1 are specifically for calibration factors.
Display Offsets
Display offset values can be entered using the
CALCulate[1|2]:GAIN[:MAGNitude] command.
CALCulate[1|2]:GAIN:STATe must be set to ON to enable the offset
value. If you enter an offset value the state is automatically enabled. On
the HP E4419B this offset is applied after any math calculations (refer to
Figure 1-9 on page 1-70).
Loss
1
Gain
-------------=
Gain Loss–=
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