Installation
5-7
3. Place the Model 3955 electronics module in a convenient location
within 3 m of the laser head. If the Lok-to-Clock option is used, place
the Model 3955 on top of the Lok-to-Clock Model 3930.
4. Attach one end of the control cable (provided in the accessory kit) to
the male D-sub
TO 3955 connector on the input bezel of the laser head
(Figure 4-3), and the other end to the TO HEAD connector on the rear
panel of the Model 3955 (Figure 4-6).
5. Connect one of the BNC cables (provided in the accessory kit) to the
ML PD photodiode connector on the input bezel of the laser head (Fig-
ure 4-3) and the other end to the PHOTODIODE connector on the rear of
the Model 3955.
6. Connect a second
BNC cable to the mode locker connector (ML) on the
laser head input bezel (Figure 4-3), and the other end to the
MODE
LOCKER
connector on the rear of the Model 3955.
7. Connect the ac power cord to the back of the Model 3955.
This completes the installation of the Model 3955 electronics module.
Installing the GTI
(ps configuration)
For a ps system, you must install the GTI prior to operating your laser the
first time (refer to Figure 5-3). If you purchased a Model 3960 fs-only or a
Model 3941 laser, skip this GTI installation procedure; a high reflector is
already installed in your system.
An improper voltage selection will damage the electronics.
Warning!
Do not connect the PHOTODIODE BNC cable to the LT C PD connector!
Caution!
Be careful when connecting the photodiode and mode locker cables.
Connecting the Model 3955 MODE LOCKER RF output cable to the Tsu-
nami ML PD mode locker photodiode connector will cause permanent
damage to the photodiode pc board.
Warning!
It is critical to the performance of the system (and ease of installation)
that you use the RF and photodiode BNC cables provided. The system
was calibrated for the type and length of these cables to provide proper
phase matching between the photodiode and mode locker signals. If RF
and/or photodiode cables other than those shipped with Tsunami are
used, an adjustment for cable length is required. Refer to Chapter 6,
“Alignment: Coarse Phase Adjustment...”
Caution!
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