Anritsu MT9812B, Operation Manual, Page: 57 / 144

4-5
Operation
4
4.1.4 Optical Sensor Front Panel
1 Zero set key
2 Analog signal
output connector
3 Optical connector
4 Drawing lever
5 Cap
MU931311A
1 Zero set key Used to remove the electrical offset of the light intercepting circuit.
4.3.2 Zero Set
2 Optical connector Connects the optical fiber cable to input measuring beam.
3.7 Connection of Optical Fiber Cord
CAUTION
Do not input light of intensity exc11 dBm by all
means. This may cause permanent damage to the
equipment such as burnout of the optical receiver and
ferrule end face.
3 Analog signal An SMA connector for analog output with an output range between 0 and 2 V and
output impedance of approximately 1 k
Ω
. This connector outputs a voltage pro-
portionate to the optical input. The connector outputs a voltage of approximately
2 V when light at the full scale level of each measurement range is intercepted.*
* For example, this means optical input of –10 dBm when the range is set at –10
dBm.
4.1 Panel Description
output connector