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System Operation
4.5.6
Laser Diode Output Connector
A DB-9 female D-connector is used for input and output connections, as
shown by the pin out diagram below.
4.5.6.1
Laser Diode Grounding Consideration
The Laser Diode output is isolated from chassis ground, allowing either output
terminal (Laser Diode Anode or Laser Diode Cathode) to be connected to
Earth Ground at the user's option. Furthermore, the Laser Diode subsystem
outputs are isolated from the Temperature Controller subsystem outputs; a
single ground connection can be made for each.
Pin
Description
1
Interlock
2
Interlock Return
3
Chassis Ground
4
Laser Diode Cathode
5
Laser Diode Cathode
6
Photodiode Cathode
7
Photodiode Anode
8
Laser Diode Anode
9
Laser Diode Anode
Table 5
Laser Diode Connector Pin-out
Do not connect the temperature sensor to Earth Ground at the
same time with grounding either TE+ or TE-. Only one
connection to ground is accepted. Failure to do so may result in
the unit malfunction or/and damage. Be careful when
connecting other instruments to 6100 Laser Diode and
Temperature Controller, as they may have their ground
connected to the Earth Ground.
For example, oscilloscopes have the probe ground connected to
Earth Ground. If either TE+ or TE- is already connected to Earth
Ground, the oscilloscope may bring the second connection,
causing malfunction or damage.
CAUTION
65
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