Product Manual

291, 292, 294
Users Manual
Connections for Synchronization
The clock connection arrangement is for the rear panel REF CLOCK IN/OUT of the
master (which will be set to
master) to be connected directly to the
REF CLOCK IN/OUT
socket of the slave (which will be set to slave).
Similarly the synchronizing connection is from any SYNC OUT of the master, which all
default to
phase lock, to the TRIG IN input of the slave.
Generator Set-Ups
Each generator can have its main parameters set to any value, with the exception that the
ratio of frequencies between master and slave must be rational and each generator can be
set to any waveform, subject to the limitations described above. Best results will be
achieved if the constraints forced on inter-channel synchronization, described in the
previous chapter, are adopted for inter-generator synchronization.
The master has its
REF CLOCK IN/OUT set to master on the REF/SYS CLOCK
menu called by the sys/ref soft-key on the UTILITY screen. (Refer to chapter 15,
System Operations from the Utility Menu.)
REF/SYS CLOCK:
sys clk: off
freq: 10.000000kHz
ref clk master
Repeated presses of the
ref clk soft-key toggle between the possibilities
The slave is set to slave. Setting the master generator to master forces the mode
to continuous and defaults the
SYNC OUT output to phase lock. Only one of the
SYNC OUTs
is needed for inter-generator synchronization; the others may be reset to
other functions if required. The phase relationship between the slave and the master is set
on the
inter-channel set-up screen of the slave, accessed by pressing the INTER CHannel
key.
mode: indep
phase: +000.0º
(actual: +000.0º
status: off view
The phase of the slave generator is set by adjusting the phase of the master channel on
the slave generator’s inter-channel set-up screen exactly as described under Phase-Setting
Between Channels above. The phase(s) of slave channel(s) on the slave generator are set
up with respect to the master in the way described in that same section.
When a single-channel generator (which has no inter-channel set-up key or screen) is the
slave, its phase is set using the
TRIGGER/GATE SETUP screen. The Trigger Phase
section of chapter 7, Triggered Burst and Gate covers this process.
The convention adopted for the phase relationship between generators is that a positive
phase setting advances the slave generator with respect to the master and a negative
setting delays the slave generator. The status of the slave generator on the inter-channel
set-up screen must be set to
on (this is automatic on the single channel instrument).
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