Anritsu MT9812B, Operation Manual, Page: 60 / 144

Section 4 Operation
4-8
4.2.3 Optical Output Enable/Disable (all light sources)
The optical outputs of all light sources inserted in the MT9812B can be turned on
and off at the same time, as described below.
Operation Remarks
Press the Optical Output Enable/Disable key.
Each time the Enable/Disable key is pressed, Enable (optical output on) and Dis-
able (optical output off) are set, alternately. While light is outputted, this key
lights on, continuously.
When the optical output is set to ON using the optical output ON/OFF function
(described in para. 4.2.2), and if the light is cut off by the optical output Disable
function or the safety-measure device of remote interlock; the Opt. On key blinks.
4.2.4 Setting Output Optical Frequency (or Wavelength)
If a light source is provided with a tunable optical frequency (or wavelength)
function, its frequency can be set at a value either greater or less than the reference
frequency (or wavelength) within the range defined by the specification. The
optical frequency or wavelength displayed after such a change is only an approxi-
mate value. The exact value should be determined using an optical wavelength
meter or an optical spectrum analyzer.
[When tunable optical frequency (or wavelength) function is provided.]
(1) Setting of the output optical frequency
Operations Remarks
Press the Prmtr key. Continue pressing the key until the unit display
turns to “THz”.
Press the or key. Select the input digit.
Press the or key. Set the value.
Press the Enter key. The pressing this key establishes the setting.
(2) Setting of the output optical wavelength
Operations Remarks
Press the Prmtr key. Continue pressing the key until the unit display
turns to “nm”.
Press the or key. Select the input digit.
Press the or key. Set the value.
Press the Enter key. The pressing this key establishes the setting.
One of the digits of the displayed output optical frequency (or wavelength) flick-
ers. This implies that the MT9812B is now in the setting mode. The value of the
flickering digit can be changed by pressing either the or key, and the
flickering digit (which can be inputted) can be changed by pressing either the or
key.