Hameg HM8131-2 Handbuch Seite 55

Master – Slave operation
10 MHz-Referenz
Up to 3 instruments may be synchronized this way. In the menu
"MULTI-DEV SYNC" [Sync] must be chosen. The defi nition
whether an instrument should be master or slave is done in
"Device confi guration" where "MS–" or "SL+" designates master
resp. slave.
Example: Switching from master to slave
Switching from Master to Slave
Mt: 1.0000000 kHz
Sin Tri Sqr -->
*** MAIN MENU 1 ***
Sweep Arb Mode -->
** WORKING MODE **
Cnt Trg Gat Sync
** MULTI-DEV SYNC **
Master Pulse Slave
** MULTI-DEV SYNC **
Master Pulse Slave
Push button [Prev] twice
Sl: 1.0000000 kHz
Sin Tri Sqr -->
In place of Fr for free-running the basic menu will
show Mt for master and SL for slave.
HINT
Selection of as well as leaving the synchronous
master-slave mode is only possible in the menu
"Working mode" by calling "Sync".
If it is desired to operate several generators with
STOP
the same frequency, all generators must use the
same reference frequency. In spite of the high
accuracy of the individual oscillators synchronisati-
on is indispensable if true coincidence is required.
Synchronisation my be achieved either by using an
external reference (10 MHz) for all generators or by
naming one as the master reference and synchro-
nize the others (slaves) to this one. Synchronization
will guarantee identical phase between all genera-
tors, but the phase or time difference between the
synchronization signal and the output signals can
not be infl uenced.
HINT
M a i n m e n u 1 a n d i t s f u n c t i o n s
Functional description of master – slave operation
Master – slave operation means defi ning the internal oscillator
frequency of one generator (master) as the reference for the
others (slaves). All slaves deliver signals identical to that of the
Steps necessary to ensure synchronization
of master and slaves:
Master
1. Definition of master und slave(s)
*** MAIN Menu 1 ***
Sweep Arb Mode -->
** WORKING MODE **
Cnt Trg Gat Sync
** MULTI-DEV SYNC **
Master Pulse Slave
2. Connect all terminals[19] 10MHz IN/OUT
of master and slaves
3. Set reference frequency at terminal[19]
*** MAIN Menu 2 ***
Mod Phi Option <--
** OPTIONS MENU 3 **
<-- Ref Disp -->
FREQUENCY REFERENCE
Int Ext out:on
Internal reference fre-
quency programmed as output
from terminal[19] 10MHz
IN/OUT
4. Connect TrigOut[18] of master to TrigIn[2]
of slave(s)
5. Set desired phase on slaved generators
6. Generate a trigger pulse from the master in
order to synchronize all. This can be a trigger
pulse into terminal TrigIn[2], of the master
or a pulse generated by pushing button Pulse
or a trigger pulse via an interface.
*** MAIN Menu 1 ***
Sweep Arb Mode -->
** WORKING MODE **
Cnt Trg Gat Sync
** MULTI-DEV SYNC **
Master Pulse Slave
Slave
*** MAIN Menu 1 ***
Sweep Arb Mode -->
** WORKING MODE **
Cnt Trg Gat Sync
** MULTI-DEV SYNC **
Master Pulse Slave
*** MAIN Menu 2 ***
Mod Phi Option <--
** OPTIONS MENU 3 **
<-- Ref Disp -->
FREQUENCY REFERENCE
Int Ext
External reference fre-
quency programmed as
input to terminal[19]
10MHz IN/OUT als Input
10 MHz-Referenz
*** MAIN Menu 2 ***
Mod Phi Option <--
Phase : 120.0 deg
- val + < cur >
Subject to change without notice
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