PCB Piezotronics 352B, Installation And Operating Manual

Page: 43 / 143

PAGE 5
MANUAL NUMBER: 19175
MANUAL REVISION: A
Operation
Internal electronics include a capacitor and resistor that decouples the sensor output signal from the DC power.
With no sensor co
nnected, move power switch to “ON” position. The front panel voltmeter measures the battery
voltage with full scale set at 27 volts (+27 volts for new batteries), see Figure 1. When an ICP
®
sensor is
connector to the input “XDCR” jack, the meter will indicate approximately mid-scale (+11 volts nominal) if the
sensor’s internal amplifier and cables are functioning properly without damage. Some sensors use a 5 volt
excitation and in this case the meter will read at the lower edge of the green region.
Figure 3: Models 480C02 / 480E09 Signal Conditioner Schematic
480E09 Only
2.6 mA
C
R