Anritsu MT9812B, Руководство по эксплуатации, Страница: 64 / 144

Section 4 Operation
4-12
4.3 Optical Sensor Operation
4.3.1 Switching Control Channels
Before setting the parameters on the MT9812B, select the unit to be controlled as
described below.
Operation Remarks
Press the or key. The selected channel is displayed on the num-
ber indicator on the left. Press these keys until
a desired channel appears.
POINT
“Parameter setting” means the setting each item after
pressing the “Prmtr key”. Therefore, the optical output
ON/OFF and settings on the rear panel can be per-
formed, regardless of the channel selection.
4.3.2 Setting Zero Power Point (for Each Unit)
(
∗
Front of the unit)
This function is used to remove the electrical offset of the light-receive circuit
within an optical sensor.
The key, which is illuminated, is located on the front panel of each unit.
(1) Executing of the zero point setting
Operations Remarks
Attach the light insulation Use the metal cap attached to this unit for
cap to the optical connector. complete light insulation.
Press the Zero key. During the execution, the parameter display
field indicates the “moving 0 (zero) to left and
right” to show that the zero setting is being car-
ried out.
Execution of the zero point setting usually takes about 30 seconds.
After the processing is completed normally, the parameter display field returns to
the values displayed before the execution of the zero setting.
2) Interrupting of the zero point setting
Operation Remarks
Press the Zero key.