7-2
MASTER-SLAVE
OPERATION
Master-slave operation consists of connecting any two 68XXXBs to-
gether and configuring them so that they produce CW and synchro-
nized, swept output signals at an operator-selectable frequency offset.
One 68XXXB (the Master) controls the other (the Slave) via interface
cables between their rear panel
AUX I/O
and
SERIAL I/O
connectors.
The two units are phase-locked together by connecting them to the
same 10 MHz reference time base.
Connecting
the 68XXXBs
Connect the two 68XXXBs, shown in Figure 7-1, as
follows:
Step 1
Connect the 3-port AUX I/O cable end la-
beled “MASTER” to the rear panel
AUX
I/O
connector on the Master 68XXXB.
Connect the AUX I/O cable labeled
“SLAVE” to the rear panel
AUX I/O
con-
nector on the Slave 68XXXB.
Step 2
Connect the ends of the flat interface ca-
ble to the rear panel
Serial I/O
connectors
on the Master and Slave 68XXXBs.
Step 3
Connect one end of a coaxial cable to the
rear panel
10 MHz REF OUT
connector on
the Master 68XXXB. Connect the other
end to the rear panel
10 MHz REF IN
con-
nector on the Slave 68XXXB.
Step 4
Connect the Master 68XXXB
RF OUT-
PUT
and the Slave 68XXXB
RF OUTPUT
68XXXB (Master)
68XXXB (Slave)
TO DUT
TO DUT
10 MHz
REF OUT
10 MHz
REF IN
AUX
I/O
AUX
I/O
RF
OUTPUT
RF
OUTPUT
SERIAL
I/O
SERIAL
I/O
TO
562
SNA
Figure 7-1.
68XXXB Configuration for Master-Slave Operation
NOTE
When connecting two 68XXXBs to-
gether for Master-Slave operations,
always use a WILTRON Master-
Slave interface cable set, Part No.
ND36329.
USE WITH
MASTER-SLAVE
OTHER INSTRUMENTS
OPERATION
NOTE
If a Model 562 Scalar Network Ana-
lyzer is being used with the master-
slave configuration, (1) connect the
AUX I/O cable end labeled "SNA" to
the rear panel
AUX I/O
connector on
the 562 SNA and (2) connect a dedi-
cated system bus cable (P/N 2100-1)
between the Master 68XXXB rear
panel
IEEE-488 GPIB
connector and
the 562 SNA rear panel
DEDI-
CATED GPIB
connector.
7-4
681XXB OM
