Agilent Technologies 8590, 90235 CTM Convert to Measurement Units

CTM Convert to Measurement Units
CTM
Convert to Measurement Units
Converts the source values to measurement units and places the result in the destination.
Syntax
,- scJurce
-\
CTM
user-defined variable
XCTM
Item Description/Default
User-defined variable A variable defined by VARDEF or ACTDEF commands
Number A number expressed in integer, decimal, or exponential form.
R-tfe
Any valid variable
name.
Real number range.
Prerequisite Commands: ACTDEF or VARDEF when using a user-defined variable.
Related Commands: AUNITS, CTA, LG, LN, RL.
Example
OUTPUT 718;"VARDEF A,MPV,O;"
Lleclares a variable called A-MPV
OUTPUT 718*"LG*"
OUTPUT 718;"RL'-1ODB;"
Pats the spectrum analyzer in log m.ook
Changes the referent level.
OUTPUT 718;"CTM A-MPV,-10;"
Stores 8000 in AXPI?
OUTPUT 718;"DSPLY A,MPV,13.5;" DispZuysAiWI?
Description
The result of the CTM command depends on the reference level, the current amplitude units,
and the amplitude scale (log or linear).
Measurement units are the 16-bit amplitude values stored in traces. The values range from
-32,768 to 32,767. The value of 8000 corresponds to an amplitude equal to the reference level.
In log mode, each count represents 0.01 dBm. A signal 0.01 dBm above the reference level is at
8001, and a signal 1.0 dBm below the reference level is at 8000 minus 100, or 7900. In linear
mode, 8000 is the reference level and 0 is the 0 volt level. If the reference level is at 80 mV,
each count would represent 0.080 divided by 8000 or 10 pV, but a reference level of 2.4 volts
would represent 2.4 divided by 8000 or 300 PV per count.
Programming Commands 5.123