Differences Between The 86120D, 86122C And Previous Models; Differences In General Operation - Keysight Technologies 86120D User Manual

Differences Between the 86120D, 86122C and Previous Models

Differences in General Operation

Keysight 86120D and 86122C Multi-Wavelength Meters User's Guide
The 86120D and 86122C are backward compatible with the 86120C.
However, because of improvements in the 86120D and 86122C, there are
some operational differences from the 86120C. For your convenience,
these differences are listed below:
The command set of 86120D and 86122C is compatible with 86120B,
NOTE
86120C, 86122A, and 86122B. The update rate of 86120D and 86122C
option 110 is higher than the update rate of 86120C, 86122A, 86122B
and 86122C option 100. This leads to differences in measurement time.
Care must be taken when automated measurements are programmed
using timers or wait states.
• Update mode and number of points: The 86120C had two update
modes (normal and fast) with two different resolutions (15,047 and
7,525 data points). The 86122C Option 110 has one update mode with
3 sweeps/second; the 86122C Option 100 has one update mode with 2
sweeps/second. The 86122C has an increased resolution of 30,093
data points. The 86120D has one update mode with 1.6 sweeps/second
and a resolution of 69722 data points.
For the 86120C, the command CALC1:TRAN:FREQ:POIN selects the
normal (MAX) or fast (MIN) update mode. For the 86120D and 86122C,
this command remains for backward compatibility. Without changing
the resolution of the 86120D and 86122C, this command configures the
queries SENSE:DATA? and CALC1:DATA? to return the number of data
points used by the 86120C. To return all the data available with the
86120D and 86122C, use the new parameter EXT1
(CALC1:TRAN:FREQ:POIN EXT1).
• Elevation: There is no need to enter an elevation for the 86120D and
86122C because they have an internal weather station. The command
SENS:CORR:ELEV remains for backward compatibility, but has no
effect on the 86120D and 86122C.
• Data logging: This new feature of the 86120D and 86122C allows you
to record measurement data over time for later analysis.
Using the 86122C 2
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