4.2 Getting Started
The POS-002 is enabled by default, with control settings at their default values, when it is
powered on. The following steps describe the setup procedure:
1.
The POS-002 has mounting holes at each corner of the enclosure. Use M3 screws
to anchor the module in place.
Figure 5 Mechanical drawing of POS-002 with mounting hole/screw information
2.
Connect power source to power pins (PIN2: +12VDC; PIN3: GND; PIN4:
−
12VDC). If the POS-002 is being installed as part of a larger system, make sure
that its ground is common with the ground for the rest of the system.
3.
If the input optical power level is not known, measure it with an optical power
meter. Make sure that it is below 20 dBm (100 mW) for internal feedback units.
4.
After verifying input optical power level, connect the input fiber to the input
connector of the POS-002. It is important to clean the fiber connector using
industry standard procedures. For a high power laser source, turn off optical
power source before connector cleaning.
5.
If using external electrical feedback, connect the external feedback signal to the
POS-002. (PIN 8: DC error signal, PIN 9: GND).
Guidelines for electrical error signal:
Please note that there is no buffer between the input signal and the A/D converter.
To avoid damage to the A/D converter, the error signal should be within the
voltage limits listed below.
Feedback Signal Range:
Minimum Voltage Level
0.5 Volts
Maximum Voltage Level
4.5 Volts
Document #: GP-UM-POS-002-21
Page 11 of 30
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