6.1 Cables
6 – 5
commercially-available mounts:
•
ILX: Most ILX laser mounts can be directly used, mating the SRS
cable to the male DB-9 plug on the mount. Note that voltage-
sensing of the TE element is not implemented in ILX mounts,
so the cable resistance contribution to VTEC will appear when
measured by the LDC500.
•
Newport: Mounts from Newport typically have a male DB-15
plug for the TEC. Users should consider the flying-lead cable.
•
Thorlabs: Not compatible. Thorlabs mounts have a male DB-9
plug for their TEC, but the pin assignments are quite di
ff
erent.
Users should again consider the flying-lead cable.
The flying-lead version of the cable (see Figure 6.4) is available in
one length (6 ft).
D-sub 15 pin male
to LDC500 / 501 / 502
1,2
3,4
5
7
8
10
12
14
15
TE+
TE–
Chassis
Sensor 2W+
Sensor 2W–
TE
TE Vsense–
Sensor 4W+
Sensor 4W–
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
AWG22
AWG22
AWG28
AWG28
AWG28
Shielding
White
TE+
TE–
TE+
TE
TE Vsense–
Sensor 4Wire+
Sensor 4Wire–
Sensor 2Wire+
Sensor 2Wire–
TE–
Black
Black
Brown
Red
Red
Red
Red
Green
Blue
6 ft (1.8m)
t
Figure 6.4: TEC cable with flying leads. SRS part number O500C2.
When configuring a TEC system for use with the LDC500 Series
Laser Diode Controllers, it is important that the temperature sensor
be kept electrically isolated from all other nodes, including chassis
ground. For best operation, the TEC (Peltier) element should also be
isolated from chassis ground.
LDC500 Series Laser Diode Controllers
