Page 26 MTN023788_D02
PM103x Optical Power Meter Interfaces Chapter 4 Operating Instructions
AO1:
The AO1 (Phoenix Contact connector DMC, PIN #13 ) delivers the amplified direct real analog signal
without a Digital-Analog-Converter (DAC). Therefore, the AO1 delivers a proportional output voltage
for each measurement range. This analog output voltage can range from -0.25 V to +2.5 V. The real
analog signal is neither wavelength- nor zero-corrected and offers the full bandwidth (up to 1 MHz)
without quantization error.
Note
The bandwidth is in accordance with the settings of the sensor and power meter.
AO2:
The AO2 (Phoenix DMC connector, PIN #11 ) delivers a range independent voltage which is DAC
controlled. The output voltage is proportional to a configured value in V/W or V/J. This constant can be
adjusted via the OPM software or, for custom made software, using the SCPI/driver commands in the
WYOA for PM103x. The constant can be set in the Thorlabs software OPM under the Settings tab: AO2
responsivity. The signal of the AO2 is generated with a 16-bit DAC with an update rate of 1 kHz. The
analog output voltage can range from -0 V to +2.5 V.
The analog signal following the DAC is of advantage when large signal dynamics are expected because
the DAC range changes and the output signal stays largely the same. Additionally, the output signal is
wavelength corrected and corrected regarding the sensor calibration data.
4.2.3.8 Autonomous Operation to Analog Output
Power meters PM103, PM103A and PM103E can be run autonomously by simply connecting a power
supply and using one of the analog output ports . In that case, no control device is required.
4.2.3.9 NTC Input
To monitor the temperature in a test environment, the PM103E has an NTC Input (Phoenix DMC
connector, PIN #9 ) which allows connection of a NTC-thermistor. To connect the ground of the TSP-
TH, please use one of the analog GND at Phoenix DMC connector, PINs #10/#12/#14 . The
measurement range is 0.1 – 100 kW. The set range R0 and the bandwidth B for the NTC thermistor can
be adjusted in the OPM software or through SCPI commands. The default settings are 10 kW and 3988 K
to directly access the TSP-TH temperature probe. The measurement range with the PM103 is then -10 °C
to 80 °C with the TSP-TH.
4.2.4 Power Supply
In contrast to the other models of the PM103x series, the PM103E is either powered over its ethernet
port (PoE), or with the Phoenix DMC connector, PINs #1 and #2(GND) .
Note
When operating the PM103E via the RS232 interface or completely autonomously via an analog output,
it can be powered with any supply in the range from +5 V to +36 V via the Phoenix DMC connector, PINs
#1 and #2(GND) . As an external power supply, we recommend the DS5 5 VDC regulated power
supply.
35
35
14
35
35
35
35
To Next Page
Loading...
Need help?
General
