THORLABS PM320E, Руководство по эксплуатации

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© 2016 Thorlabs GmbH
3 Operating Instruction
21
the Main Display to Average Power.
Repetition Rate
The repetition rate can be displayed in both main and sub display by selecting ‘Freq. [Hz]’ in the
CHx Setup. The measurement value will be updated with each incoming pulse.
Area Calculation
When the diameter of the incident beam is entered, this function returns either the average
power density or the energy density. To display this measurement value enter the CHx Setup
and chose power or energy density in the Main Display. For entering the beam diameter
navigate the CHx Setup to ‘Beam Diameter 1/e
2
'.
3.4.4 Custom Pyroelectric Sensors
Beside Thorlabs pyroelectric energy sensors, any pyroelectric elements with an output peak
voltage up to 100 V can be connected to the PM320E:
·
Connect the pyroelectric element to one of the DB-9 connectors (CH1 or CH2); with pin 8
to plus pole and pin 3 to ground.
·
Connect a resistor (1 k
W
to 10 k
W
) between pin 7 (PRESENT) and 3 (GND).
The PM320E will recognize a ‘Pyro Head Adapter’. The read-out will be in Volts or - if the
responsivity factor in V/J has been entered - also as energy value in Joules or average power
value in Watts.