Anritsu MT9812B, Operation Manual, Page: 77 / 144

5-9
Remote Control
5
5.3 Device Message
SOURce<n>:POWer:STATe
Function
Sets the optical power ON/OFF.
Program message
SOURce<n>:POWer:STATe < sw >
SOURce<n>:POWer:STATe?
Response message
<status>
Parameter
< sw > := {ON, OFF, 1, 0}
< status >
:= {1, 0}
1 ........... ON
0 ........... OFF
Explanation
This command turns optical power ON/OFF.
SOURce<n>:POWer:WAVelength
Function
Sets the wavelength.
Program message
SOURce<n>:POWer:WAVelength
UPPer | LOWer | CENTer | < wavelength > [<unit>]
SOURce<n>:POWer:WAVelength?
Response message
< wavelength >
Parameter
< wavelength >
: = {f(m)|380
×
10
-9
≤
f
≤
1800
×
10
-9
}
< wavelength > : = {f(Hz)|166.551
×
10
12
≤
f
≤
788.927
×
10
12
}
< unit >
: = {NM, UM, M, Hz}
Explanation
This command sets the wavelength at <wavelength>.
The range and resolution of the wavelength depends on its light source unit. The
actual set values are rounded by the resolution.
Whenever the unit is omitted on the program message, the unit is assumed as m.
When an unit is added, it is set with the unit.
Response message is output by the unit system (m or Hz) currently set.
Only when the light source with two wavelengths is used, “UPPer” and “LOWer”
can be specified on the parameters; which are the wavelengthes of the longer and
the shorter sides, respectively.
Even if the wavelength is set either with “UPPer” or “LOWer” wavelength, the
response message returns the value for the longer wavelength or the shorter wave-
length.
Only when a DFB-LD light source is used, “CENTer” wavelength can be speci-
fied on the parameter. In this case, set the wavelength at the center of the wave-
length.