HP E4418B Programming Manual page 176

READ[1|2][:SCALar][:POWer:AC]: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
READ1:REL? DEF,1,(@2)
HP E4418B/E4419B Programming Guide
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 is the channel on which the
command is implemented.
If unspecified the current window
setup is used. However, on the
HP E4419B, if the window shows a
ratio or difference measurement,
the upper window defaults to
channel A and the lower window to
channel B.
means DEFault. This is not equivalent to the DEFault
DEF
MEASurement Instructions
Range of Values
2
1 to 4
1.0, 0.1, 0.01, 0.001
1
DEF
(@1)
(@2) (HP E4419B
only)
DEF
This command queries the upper
window's relative measurement of
channel B, using the current
sensor range and a resolution of 1.
leaves the
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