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Models 9326-P and 9326-A-P
Fast Preamplifiers |
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- Sub-ns rise time for pulse amplification with Microchannel-plate
detectors, Electron multipliers,
Photomultiplier
tubes, Fast photodiodes and Silicon charged-particle detectors
Selectable voltage gains of x5, x10, or x20 (non-inverting)
Low-frequency roll-off <10 kHz
0 to –1 V output into 50 W
Input overload protection
Compact size
General
The Model 9326-P Fast
Preamplifier is optimized for amplifying the pulses from
microchannel-plate detectors, electron multipliers, photomultiplier tubes,
fast photodiodes, and silicon charged-particle detectors. The fast rise
times of these detectors are preserved by the < 1 ns rise
time of the Model 9326 output, which can supply 0 to –1 V pulse
amplitudes into a 50 W
load. The compact size permits placement close to the detector in order to
avoid ground loop and environmental noise interference with the small
signals produced by the detector. Voltage gains of x5, x10, or x20
(non-inverting) can be selected via a board jumper.
A low-frequency roll-off less than 10 kHz is unusual for a
preamplifier intended for processing fast detector pulses. This
low-frequency response virtually eliminates pulse undershoot when used
with the FASTFLIGHT-P
and FASTFLIGHT-2
Digital Signal Averagers for Electrospray Time-of-Flight Mass
Spectrometry.
To minimize damage caused by large transients from the detector, the
input incorporates overload protection. The output is also short-circuit
protected. Any 9-pin D preamplifier power connector meeting the ORTEC
standard pin assignments (such as those on FASTFLIGHT-P
and FASTFLIGHT-2)
can be used to supply the +12 V DC power via one of the two
standard power cables (1 m or 3 m long) supplied with the Model
9326.
| Input |
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|
Connector |
|
BNC |
|
Mode |
|
Single-ended |
|
Coupling |
|
AC |
|
Impedance |
|
50
W AC,
<1000 W DC
to ground |
|
Noise |
|
Ł 20 µV
rms equivalent input noise |
|
Signal
Level |
|
0
to –200 mV |
|
Protection |
|
Diode clamps
provide protection against overload to ±2 V DC, or ±10 V
for a 50 ns wide pulse at a duty cycle of <1% |
| Gain |
|
|
x5, x10, or
x20 (non-inverting) selected via a board jumper |
| Output |
|
|
|
|
Connector |
|
BNC |
|
Voltage |
|
Will
deliver +0.25 to –1 V
into a 50 W load |
|
Coupling |
|
AC |
|
Risetime |
|
Ł 1 ns |
| Power |
|
|
+12 V
regulated DC @ 100 mA max, via 9-pin D type connector. Supplied
with mating power cable according to model number:
Model 9326-P: 3 m (10') length
Model 9326-A-P: 1 m (3' 3") length |
| Dimensions
(excluding connectors) |
|
Aluminum
housing 86 mm wide x 133 mm deep x 30 mm high
(3.4" wide x 5.3" deep x 1.2" high) |
| Weight |
Net |
|
390
g (0.85 lb) |
|
Shipping |
|
1.3
kg (2.9 lb) |
|
is
a trademark of AMETEK, Inc.