Specifications

Chapter 2 Getting Started 15
Controller Features
Front Panel
POWER Switch and Indicator: The power switch, which is located on the front panel as
shown in Figure 2 (left), interrupts both sides of the controller’s AC power input. The
switch’s indicator LED lights whenever the ST-133 or ST-133A is powered. Note
that, when the power switch is actuated, there is a short delay before the indicator
lights. This is normal and in no way indicative of a malfunction.
I
0
R OPER S CIENTIFIC, Inc.
120Vac
~
50-60Hz
FUSES: LEFT: RIGHT:
100 - 120V
~ 0.75A - T 2.50A - T
220 - 240 V
~ 0.30A - T 1.25 A - T
SHUTTER CONTROL
REMOTE
SETTING
EXT. TRIG. IN
PRE. TRIG. IN
TIMING GEN.
AUX. TRIG. OUT
TRIG.
300 W MAX
T
0
Figure 2. ST-133/ ST-133A front and rear panels
Back Panel
Fan: There is an internal fan located at the back panel behind the exhaust grill. Its
purpose is simply to cool the controller electronics. This fan runs continuously
whenever the controller is powered. Air enters the unit through ventilation slots on
the sides and bottom, flows past the warm electronic components as it rises, and is
drawn out the rear of the controller by the fan. It is important that there be an
adequate airflow for proper functioning. As long as both the controller’s intake
ventilation slots and the fan aren’t obstructed, the controller will remain quite cool.
Shutter Control:
*
Directly below the fan are the Shutter Power connector and the
Shutter Setting dial. The Shutter Power connector can be used to drive an
external shutter if the camera isn’t equipped with an internal shutter.
*
If an ST-133/ST-133A is shipped with a camera having an Interline CCD chip, the Shutter
Control Remote connector and Setting dial may not be supplied. If this is the case, the
corresponding panel openings will be plugged.