203PC-1, 20 pages

Astronics Test Systems Inc.

Trig-Tek™

203PC-1, -2
Charge Amplifier

The Trig-Tek™ 203PC-1, -2 charge amplifiers operate with high temperature
accelerometers where pyroelectric effects may be encountered.

Key Features
•t pC or mV mode
•t Accel or Vel input
•t High-Pass and Low-Pass Filters
•t Overload detection
•t Six Full Scale (FS) ranges
•t DVM indicator
•t 0.1 to 199.9 input sensitivity
•t AA, AV, AD, VV, VD
•t 115 or 230 Vrms power

Product Information
The Trig-Tek™ 203PC-1 and 203PC-2
cover the frequency range from 3 Hz
to 40,000 Hz. They double-integrate the
10 g acceleration output signal to provide
velocity and displacement outputs.
A four-position thumb-wheel sensitivity
control in conjunction with a three-position
toggle switch accommodates pickups having sensitivities from 0.100 to 199.9 pC/g,
mV/g, or mV/ips. A “Mode” switch selects
“pC/g” (“AA,” “AV,” or “AD”), “mV/g” (“AA,”
“AV,” or “AD”), or “Vel” (VV or VD).
The DC output switch selects “X1” or “X10”
for g’s, ips, or MILs at the “DC Output.” An
external “Cal” signal can be selected by a
front panel switch or by the “Cal” control
input (rear panel).
A Low-Pass Filter has 100 Hz to 19.9 kHz
cutoff frequencies in 100 Hz steps, and
a High-Pass filter has 1 to 999 Hz cutoff
frequencies in 1 Hz steps.
A digital front-panel meter displays selectable Full Scale (FS) levels of “10,” “20,”
“50,” “100,” “200,” or “500” g’s Pk or “1,” “2,”
“5,” “10,” “20,” or “50” ips or MILS Pk.
The 203PC is packaged as a plug-in module. Available are a single-module chassis
and a six-module chassis.

949.859.8999; 800.722.2528; atssales@astronics.com; www.astronicstestsystems.com
Copyright © 2014 Astronics Test Systems Inc.

When “mV/ips” is selected, the amplifier will
operate with ICP-type velocity pickup with
the “Curr-On” or with a standard velocity
pickup with the “Curr-Off.”
A “DC Output” switch permits selection
of either “X1,” “X10,” “10 mV/g,” or
“100 mV/ips” or MIL at the “DC Output.”
An “External Cal” signal can be selected
by the front panel “Mode”/”Units” switch
or by the “Cal” control input (rear panel).
An internal switch has three positions: “A,”
“V,” and “Out.” In the “A” position, it places
the Low-Pass Filter in the acceleration
before the velocity integrator path.
In the “V” position, it places the filter behind
the velocity integrator path.
In the “Out” position, there is no filter.
A second internal switch marked “V,”
“D,” and “DC” will place the High-Pass
Filter at the velocity output for “V”, at the
displacement output for “D”, and in the DC
path in the “DC” position.
The unit has overload circuits to alert
if FS Pk levels are exceeded.