Santec PEM-320, Operation Manual

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POLARIZATION EXTINCTION RATIO METER PEM-320
7-5
7.6. Analogue Output
The analogue interface (AIF) located on the rear panel of the PEM-320 enables the measured
signals to be monitored as analogue voltages. The voltages mirror directly the values displayed
on the front panel with the same refresh rate. The connector is a Hirose Electric HR10-7R-6S.
The corresponding plug is a Hirose Electric type HR10-7P-6P. The pin assignment for the
connector is detailed below.
1
2
3
6
5
4
Viewed from rear of PEM-320
* On PEM-320 units fitted with the option to enable monitoring of the signal directly from the
photodetector Pin 2 of the AIF connector provides this "analogue through" output. The output
ranges from 0 to 2.5 Volts, is autoranging, and supports measurement speeds up to 1kHz. The
"analogue through" signal should be monitored when the polarizer is stopped.
P i n Parameter Output Signal Measured Parameter Example
1 Optical Power 0 ~ 3 V -50 dBm ~ 10 dBm 0 dBm = 2.5 V
2 G N D *
3 P E R 0 ~ 2 V 0 dB ~ 40 dB 1 V = 20 dB
4 G N D
5 Polarization Angle 0 ~ 1.8 V 0 ~ 180 deg. 0.9V = 90 deg
6 RRDX