Read[1|2][:Scalar][:Power:ac]:Difference:relative? [<Expected_Value>[,<Resolution>[,<Source List>]]] - HP E4418B Programming Manual

MEASurement Instructions
READ[1|2][:SCALar][:POWer:AC]:DIFFerence:RELative? [<expected_value>[,<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
parameter 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.
Example
Error Messages
INITiate:CONTinuous must be set to OFF on both channels, otherwise
error -213, "INIT ignored" occurs.
If TRIGger:SOURce is set to BUS or HOLD on either channel, error -214,
"Trigger deadlock" occurs.
If the resolution parameter is not the same as the current resolution
setting on the specified window, error -221, "Settings conflict" occurs.
2-44
Item Description/Default
resolution 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.
source list This channel list specifies between
which channels the difference is
calculated. If unspecified and the
current window setup is a
difference measurement then this
difference setup is used, otherwise
it defaults to channel A-B.
means DEFault. This is not equivalent to the DEFault
DEF
READ1:DIFF:REL? DEF,4,(@2),(@1) This command queries the
Range of Values
2
1 to 4
1.0, 0.1, 0.01, 0.001
1
DEF
(@1),(@2)
(@2),(@1)
DEF
upper window's relative
difference measurement of
channel B - channel A,
using the current sensor
range and a resolution
setting of 4 on both channels.
HP E4418B/E4419B Programming Guide
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