LDM-4990 7
Proper shielding of the current source and temperature controller signals is
necessary to ensure proper noise-free performance. This is accomplished by
grounding the shield on the interconnect cables to the controller and not to the
mount. The CC-505 Temperature Control Cable provides this shielding
automatically by connecting the 15 pin housing into the temperature controller.
The CC-305S Current Source Cable, being symmetrical, must be oriented
correctly to ensure proper grounding of the shield. This is done by connecting the
serial-number end of the cable to the current source. The current source will still
drive the laser normally with the cable reversed, but the noise performance will be
degraded. If noise becomes excessive during testing, check the orientation of
your laser cable.
The male 9-pin connector (P2) for temperature control is compatible with all ILX
Lightwave temperature controllers and cables. There are connections provided
for TE module (+) and (-), and thermistor (two connections). The pinout diagram
for this connector is shown in Figure 2.3.
Figure 2.3 LDM-4990 TEC Connector
