Agilent Technologies EPM-P Series Programming Manual page 184

FETCh[1]|2|3|4[:SCALar][:POWer:AC]:RATio:RELative? [<expected_value>[,<resolution>[,<source
Item
resolution
source list
1. The mnemonic
parameter used in the command sub-systems. The parameters must be entered in
the specified order. If parameters are omitted, they will default from the right. The
parameter DEFault is used as a place holder. Specifying
value unchanged.
2. When the measurement result is linear this parameter represents the number of
significant digits. When the measurement result is logarithmic 1 to 4 represents a
resolution of 1, 0.1, 0.01 and 0.001 respectively.
3. E4417A only.
Example
FETC:RAT:REL?
Error Messages
• If the last measurement on either channel is not valid error -230, "Data
corrupt or stale" occurs. A measurement is valid after it has been
initiated. It becomes invalid when either a reset occurs or any
measurement parameter, for example frequency, is changed.
EPM-P Series Power Meters Programming Guide
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Description/Default
A numeric value for the resolution.
If it is unspecified the current
resolution setting is used. If a
value is entered it should
correspond to the current
resolution setting otherwise an
error occurs.
This channel list specifies the
channels used to calculate the
ratio.
If unspecified and the current
window setup is a ratio
measurement then this ratio setup
is used, otherwise it defaults to
channel A/B (E4417A) or A/A
(E4416A).
DEF means DEFault. This is not equivalent to the DEFault
This command queries the relative ratio
measurement on the upper window.
Measurement Commands
list>]]]
Range of Values
2
1 to 4
1.0, 0.1, 0.01, 0.001
1
DEF
3
(@1),(@2)
3
(@2),(@1)
(@1),(@1)
3
(@2),(@2)
leaves the parameter
DEF
2-37