Specifications

20 ST-133/ST-133A Controller Manual Version 2.H
EXT SYNC BNC connector: This TTL input, which has a 10 kΩ pullup
resistor, allows data acquisition and readout to be synchronized with
external events. In the External Sync mode, readout is initiated when the
signal (typically a pulser trigger output) applied to the Ext Sync
connector is detected. Through software you can select either positive or
negative edge triggering (default = negative). See Chapter 5, Timing
Modes for detailed information.
Note: There are three sync modes, Free Run, External Sync and
Internal Sync selectable via software (WinView/32 Experiment Setup
Timing tab page). Internal Sync mode operation, which does not
require a connection to Ext Sync, is only available if a PTG Timing
Generator is installed. If the timing generator is a DG535, the D output
of the DG535’s D output is applied to Ext Sync to initiate readout.
BNC connector: In WinView/32
or WinSpec/32 (ver. 2.4 and
higher) the signal (
(NOTSCAN) or SHUTTER
MONITOR) provided at this
connector is software-selectable.
The default is SHUTTER
MONITOR.
Note: When the signal at the
connector is software-
selectable, the Logic Out output
on the Controller/Camera tab
page (Figure 5) indicates the
selected signal, either Shutter
or Not Scan. If the selection
function isn’t present in the
software, you may have an
Figure 5. WinView/32 Controller/Camera
Setup tab page
older controller and an internal jumper must be moved to change the
selection. Contact the factory (see page 114) Technical Support Dept. for
information on how to change the jumper setting. Because the default
jumper selection is SHUTTER MONITOR, used to inhibit the pulser/timing
generator, it is unlikely that the selection will require changing.
reports when the controller is finished reading out the CCD
array.
is high when the CCD array is not being scanned, then
drops low when readout begins, returning to high when the process is
finished.
SHUTTER MONITOR, the default selection, reports when the shutter is
opened and can be used to synchronize external shutters. SHUTTER
MONITOR is low when the shutter is closed and goes high when the
shutter is activated, dropping low again after the shutter closes. As
shown in Figure 6, except that the
signal includes cleaning
activity and t
c
, the shutter compensation time (time allowed for the
shutter to close), the two signals are similar.