3.0 INSTALLATION
Connect the 422E5X to the transducer
with low noise cable (003 type only).
Standard coaxial cable may be used
between the amplifier and power unit,
and between the power unit and readout
device. (Fig 2)
Connect case of unit to Earth ground
with a low impedance connection to
conform to CE.
Fig 2
4.0 WARNING SYMBOLS AND TERMS
The following symbols and terms may
be found on the equipment described in
this manual.
This symbol on the unit
indicates that excessive
accumulated charges on
the input cable can
destroy the field effect
input transistor. These charges should be
grounded out by shorting the center pin
of the connector plug to the outer cable
conductor with a metallic object before
connecting them to the 422E5X charge
amp. Care should be taken to avoid
touching the input terminal to any object
that could possess an electric charge
(such as your fingers).
This symbol on the unit
indicates that the user
should refer to the
operating instructions
located in the manual.
5.0 OPERATION
After connecting the 422E5X as
indicated in Fig 2 Energize the system
by turning on the power unit and waiting
a few minutes for the amplifier to turn
on.
For a simple, self-test circuit, monitor
the +9 to +12 V DC bias existing at the
output during normal operation with a
high impedance voltmeter. Many PCB
power units feature such a test circuit
(Fig 3).
Fig 3 – A typical bias meter.
5.1 SYSTEM SENSITIVITY
When the sensitivity (pC/unit) of the
transducer is known (via calibration)
along with the transfer sensitivity of the
charge amp (mV/pC), the system
sensitivity of the system can be
calculated in the following manner:
System sens = (Xdcr Sens)(Amp Sens)
System sens is given in (mV/Unit)
Xdcr Sens is given in (pC/Unit)
Amp Sens is given in (mV/pC)
Содержание 422E5 Series
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