Signal Generation – The SOURce Subsystem Measurement Operations & Settings
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 115
command: [:SOURce[n]][:CHANnel[m]]:AM[:INTernal]:FREQuency[l]
syntax: [:SOURce[n]][:CHANnel[m]]:AM[:INTernal]:FREQuency[l]<wsp><frequency>
[THZ|GHZ|MHZ|KHZ|HZ]
description: Sets the frequency of the amplitude modulation of the laser output.
parameters: The frequency as a float value in Hz.
Also allowed are: MIN: minimum programmable value
MAX: maximum programmable value
DEF: This is not the pr eset (*RS T) defaul t value but is half the sum of, the
minimum programmable value and the maximum programmable value
The default units are HZ, although KHZ, MHZ, GHZ, and THZ can also be specified.
The resolution of the frequency is always 1 Hz.
NOTE Use [l] to set the modulation frequency 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 deno ted by 2.
response: none
example: sour2:am:freq 270hz
affects: All laser sources, DFB sources, and tunable las er modules
command: [:SOURce[n]][:CHANnel[m]]:AM[:INTernal]:FREQuency[l]?
syntax: [:SOURce[n]][:CHANnel[m]]:AM[:INTernal]:FREQuency[l]? [MIN|DEF|MAX]
description: Returns the frequency of the amplitude modulation as a float value in Hertz.
parameters: MIN: minimum modulation frequency
MAX: maximum modulation frequency
DEF: This is not the preset (*RST) default value but is half t he sum of, the minimum modula-
tion frequency and the maximum m odulation frequency.
NOTE Use [l] to query the modulation frequency 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] is1, the lower wavelength source. The upper wavelength
source is deno ted by 2.
response: modulation frequency relevant to t he current value or specified p arameter (if MIN, MAX, or
DEF is chosen as a parameter).
example: sour2:am:freq? min → +2.00000000E+002<END>
affects: All laser sources, DFB sources, and tunable las er modules