Agilent Technologies 8163A Programming Manual page 98

Measurement Operations & Settings
command:
syntax:
description:
parameters:
NO TE
NO TE
NO TE
response:
example:
affects:
98
[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]
[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation[l]<wsp><value>[DB|MDB]
Sets the level of attenuation.
Any value in the specified range (see the specifications in the appropriate User's Guide).
Also allowed (for MIN: minimum programmable value
tunable laser
MAX: maximum programmable value
modules only)
DEF: This is not the preset (*RST) default value but is half the sum of,
are:
the minimum programmable value and the maximum programmable val-
ue
Use [l] to set the attenuation level of the upper or lower wavelength laser source of a dual-
wavelength laser source or of a return loss module with an internal dual-wavelength laser
source. The default value of [l] is 1, the lower wavelength source. The upper wavelength
source is denoted by 2.
Tunable laser modules with in-built optical attenuators need to be in Manual
Attenuation Mode (see
"[:SOURce[n]][:CHANnel[m]]:POWer:ATTenuation:AUTO" on page 99) for this
value to have an affect. The output power is a combination of this value and the
laser output power (see
"[:SOURce[n]][:CHANnel[m]]:POWer[:LEVel][:IMMediate][:AMPLitude]" on
page 101).
In this respect, this command does not conform to the SCPI standard. The SCPI
standard requires that entering an explicit value for the attenuation switches the
attenuation mode OFF.
The default units are dB.
none
sour2:pow:att 22.32db
All tunable laser modules with an in-built optical attenuator, all laser source modules, and
return loss modules with an internal source
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System,
& Agilent 8166A Lightwave Multichannel System, Third Edition
Signal Generation – The SOURce Subsystem