What Is A Power Sensor Module; A Description Of The Front Panel; Analog Output - Agilent Technologies 81632B User Manual

What is a Power Sensor Module

81632B
Power Sensor
Output Analog
+10dBm -80dBm
Input InGaAs
Disabling Autoranging
Agilent 81632B/3B/4B/6B/7B Power Sensor Modules and Agilent 81635A Dual Power Sensor Module, First Edition
What is a Power Sensor Module
A Power Sensor Module measures the power emitted from a connected
single-mode or multi-mode fiber (with Numerical Aperture ≤ 0.24 and
core diameter ≤ 62.5 µ m). The wavelength and power range depends
on the sensor element.

A Description of the Front Panel

81633B
Power Sensor
Output Analog Output
+10dBm -90dBm +10dBm
Input InGaAs Input
Figure 1 Front Panel of the Agilent Power Sensor Modules

Analog Output

The analog output is the BNC connector on the front of the sensor
module. It outputs a voltage directly proportional to the strength of the
optical signal at the optical input in the current range. The analog
signal is always in the range between 0 and 2V, 2V corresponding to a
full power input signal in the current range, 0V corresponding to no
input signal.
During autoranging, the level to which 2V corresponds changes. You
should disable autoranging when using the analog output.
Select the best range for the application using the mainframes user
interface. Select <Menu>, <Range Mode>, <Manual> and then choose
from the list of ranges.
Applications
Possible applications for the analog output are:
• to close the feedback loop controlling the current supplied to a laser
• to aid positioning the system for fiber alignment tasks
81634B 81636B
Power Sensor Power Sensor
Analog Output
-110dBm +10dBm
InGaAs Input
Getting Started with Power Sensor Modules
81637B
Power Sensor
Analog Output Analog
-80dBm +10dBm -80dBm
InGaAs Input InGaAs
81635A
Power Sensor
Input1 InGaAs
+10dBm -80dBm
Input2 InGaAs
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