Anritsu MT9812B, Operation Manual, Page: 76 / 144

Section 5 Remote Control
5-8
5.3.2 Commands for Setting Light Source Unit
The light source unit setting commands specify various conditions for one light
source unit specified in <n>.
SOURce<n>:AM[:INTerval]:FREQuency
Function
Sets the modulation frequency.
Program message
SOURce<n>:AM[:INTerval]:FREQuency CW | < freq > [< unit >]
SOURce<n>:AM[:INTerval]:FREQuency?
Response message
< freq >
Parameter
< freq >
:= {0, 270, 1000, 2000} (Unit: Hz)
< unit > := {HZ, KHZ}
Explanation
This command sets the optical output to CW or the modulation frequency speci-
fied in <freq>.
If the unit of <freq> is omitted, Hz is assumed. If the unit is specified in <unit>,
it is set in the specified unit. For 0 Hz, CW is set.
The response message is always output in Hz.
SOURce<n>:POWer:ATTenuation
Function
Sets the attenuation.
Program message
SOURce<n>:POWer:ATTenuation < level > [DB]
SOURce<n>:POWer:ATTenuation?
Response message
< level >
Parameter
< level > := {f(dB)|0.00
≤
f
≤
6.00}
Explanation
This command reduces the optical output from the maximum output level by the
value specified in <level>. The setting range and the setting resolution of <level>
are dependent on the light source unit. <level> is rounded off to the setting reso-
lution. The attenuation is always output in dB. The unit may be omitted.