EPIQ 5 & 7 Training Manual
© 2016 Conquest Imaging
7
voltages from the Power Regulator Board (PRB) to control noise on
the high voltage lines. The voltages resident on the CB for the matrix
transmitters are XHV-, XHV+, XV-5, XV+11, and XV+3.3.
Discrete circuits (amplifiers) generate transmitter voltages up to 160V
(200V peak to peak). The low voltage portion of the transmitter
circuits and the receiver circuitry reside in the Chipper Application
Specific Integrated Circuit (ASIC).
The CB provides the 160 MHz system master clock which generates all
system frequencies: 160, 480, 80, & 40MHz.
It also generates the TestRF signal sent to all channels for test
purposes using the I
2
C bus.
Transducer Select Board
The Transducer Select Board (TSB) switches input and output signals
from the four transducer connectors and one CW probe connector to
the 128-channel CB.
The selection of the transducers is handled by relays to maintain
electrical isolation of the transducers.
The only I
2
C communication occurs during system boot-up to detect
transducers connected to this board. If a change occurs in the
selected tranducer the transducer-select hardware will interrupt the
ACB.
This board provides a connection to each channel the test RF signal
for Resident Self Test (RST).
The EPIQ7 model has LED lighting at the connectors to enable
transducer connection in low light conditions.
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