HP 8904A - Page 148

3A-2 HP 8904A Option 005
General Description
The HP 8904A Option 005 allows the phase synchronization of
two or more HP 8904As equipped with Option 005. Phase
synchronization is accomplished by interconnecting the phase-setting
signals of each instrument’s digital waveform synthesis circuitry in a
“Master/Slave” relationship. One instrument provides phase reset and
clock synchronization signals for the other instruments. These signals
provide a common phase reference point for,up to
16 separately
configured channels (using eight instruments equipped with
options
002 and 005).
When SYNCHRONOUS MODE has been enabled, the Phase Reset
and SYNC Clock signals are re-routed to the connectors at the rear of
the instrument.
If an instrument is being used as the Master
controller, these signals must be routed back into the instrument to
function properly. These signals are also connected to any Slave
instruments for phase synchronization.
EIecfrical Connections
Four female BNC connectors are used to interconnect the instruments
for phase synchronization:
SYNC CLOCK - OUTPUT
This connection provides an output for the internal clock signal used
for latching internal waveform and amplitude data into the
analog-to-digital converters. It provides the Master synchronizing
signal for connecting
two or more HP 8904As for phase
synchronization.
This signal is not used when the instrument is
configured
as a Slave.
SYNC CLOCK - INPUT
The SYNC CLOCK OUTPUT signal is input here to provide the clock
signal for latching the waveform and amplitude data into the
analog-to-digital converters. If the instrument is configured as the
Master controller, its own SYNC CLOCK OUTPUT signal must be
routed back to this connector for the instrument to function properly.
RESET - OUTPUT
This connection provides an output for the internal phase reset signal.
This signal establishes a common phase starting point for the output
signals. It provides the Master phase reset signal for connecting
two
or more HP 8904As for phase synchronization. This signal is not used
when the instrument is configured
as a Slave.
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