150
8163A/B, 8164A/B & 8166A/B Mainframes Programming Guide
4
Measurement Operations & Settings
command:
[:SOURce[
n
]][:CHANnel[
m
]]:POWer[:LEVel]:RISetime[
l
]
syntax:
[:SOURce[
n
]][:CHANnel[
m
]]:POWer[:LEVel]:RISetime[
l
]<wsp><value>[NS|US|MS|S]
description:
Sets the laser rise time of the chosen source.
parameters:
Any value in the specified range (see the appropriate
User’s Guide
).
Also allowed are:
MIN: minimum programmable value
MAX: maximum programmable value
DEF: This is not the preset (*RST) default value but is half the sum of, the minimum
programmable level and the maximum programmable level
Use [
l
] to set the risetime of the upper or lower wavelength laser source of a dual-wavelength laser source or 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
.
response:
none
example:
sour2:
pow:ris 10ns
affects:
Fixed-wavelength laser sources (Fabry-Perot, DFB lasers), return loss modules containing an internal source, and tunable
lasers, except 81602A, 81606A, 81607A, 81608A and 81609A.
command:
[:SOURce[
n
]][:CHANnel[
m
]]:POWer[:LEVel]:RISetime[
l
]?
syntax:
[:SOURce[
n
]][:CHANnel[
m
]]:POWer[:LEVel]:RISetime[
l
]?<wsp>[MIN|DEF|MAX]
description:
Returns the laser rise time of the chosen source.
parameters:
Also allowed are:
MIN: minimum programmable value
MAX: maximum programmable value
DEF: This is not the preset (*RST) default value but is half the sum of, the minimum
programmable level and the maximum programmable level
Use [
l
] to query the risetime of the upper or lower wavelength laser source of a dual-wavelength laser source or 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
.
response:
The rise time as a float value in seconds.
example:
sour2:pow:ris?
->
+1.00000000E-009<END>
affects:
All laser sources, DFB sources, and tunable laser modules and return loss modules with an internal source