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Appendix B
PTG Module
Description
The Princeton Instruments
Programmable Timing Generator
(PTG) is a plug-in module designed
for operation in the ST-133
Controller. Incorporating the Timing
Generator into the Controller in this
manner allows pulsed operation of
the PI-MAX camera in pulsed
measurements without the
inconvenience and expense of a
separate timing generator. The novel
and highly integrated design of the
PTG, with its advanced high-speed
electronics, low insertion delay and
wide range of programmable
functions, achieves superior
performance as the ultimate gate
controller for the PI-MAX camera.
Note: The combination of PTG and
the USB 2.0 interface is supported by
versions 2.5.15 and higher of
WinView/32 and WinSpec/32.
T
0
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.
Figure 31. ST-133 with Programmable Timing
Generator and PCI (TAXI) Interface Control Module
Specifications
Back panel I/O
Pre-Trigger Input: BNC (10 kΩ impedance), TTL level used only to start a bracket
pulse.
External Trigger Input: BNC, fully configurable trigger input (see Trigger
specifications below).
T0 Output (Selected Trigger Output): BNC, TTL level, output of trigger selector. If
burst pulsing is turned Off, the T0 Output is asserted after either an External or an
Internal trigger and a pulse ensemble is then produced. The T0 Output is deasserted
when a pulse ensemble is completed. A pulse ensemble consists of a Gate Start pulse,
a Gate Stop pulse and an Auxiliary pulse.