Datasheet

Chapter 3: Installation

Pulsed mode operation

1. connect the CPL cable to the LDD

2. connect the LDD to the TPG:

a) using the CPL Lemo 00 +12VDC cable for power supply of the LDD

b) using the CPL BNC cable into the Out1 and Out2 output

IMPORTANT:

The LDD ground must be ﬂoating.

3. connect the LDD to the external power supply using the CPL red and black

banana cables

4. if no bias-T external circuit is to be used, shortcut the signal (yellow) and ground

(black) banana cables by connecting them together. See section B.3 for details

on bias-T control

• LLH housing in pulsed mode:

1. connect the LLH to the TCU using the CTL cable

2. connect the LLH to the LDD using the low impedance line LBI

3. if available, connect the cooling water tubing to the corresponding connec-

tors of the LLH

Note: if no water cooling is being used, carefully monitor the LLH module

case temperature. Air cooling and heat dissipation must be provided.

CAUTION:

If the LLH module case exceeds a temperature of 60

◦

C, permanent

damage to the laser chip may occur.

• HHL housing in pulsed mode:

1. connect the HHL to the TCU using the CTLm

2. connect the HHL to the LDD using the low impedance line LBI via the

CTLm cable

40 QCL user’s manual v3.0