At the System Configuration menu, press
GPIB
.
The Configure GPIB Menu (below) is displayed.
Verify that the GPIB address and terminator shown
on the display match the System Bus source ad-
dress and data terminator that are set on the 360B
VNA.
If the address of the 681XXB on the System Bus
needs changing, press
GPIB Address
. Enter the
new address using the cursor control key or the
data entry keypad and the terminator key
HZ
ms
ADRS
The new GPIB address will appear on the display.
To change the data terminator, press
Line Term
to
select the correct GPIB data delimiter.
Press
SS Mode
to turn on SS mode. This places
the 681XXB in a source lock mode.
The sweep generator is now configured for 360B
source lock mode operation.
Initiating 360B Source Lock Mode Operations
Turn on the 360B and configure it for source lock
mode of operation. (Refer to the 360B VNA opera-
tion manual.) Once configured, the 360B takes con-
trol of the sweep generator.
When the 360B takes control, the display of all pa-
rameters on the 681XXB is disabled and the mes-
sages
SS MODE, Secure Mode Active
, and
Remote
appear on the front panel display.
USE WITH
USE WITH A 360B VECTOR
OTHER INSTRUMENTS
NETWORK ANALYZER
SS MODE
When SS Mode is selected on, this
message is displayed (in the fre-
quency mode title bar) on all menu
displays to remind the operator that
the 681XXB is in a source lock
mode.
NOTES
A 360B VNA and a 68137B, 68153B,
or 68163B Source in SS Mode
should not be operated below
2.1 GHz because it may fail to lock.
A 360B VNA and a 681X5B Source
in SS Mode should not be operated
below 600 MHz because it may fail
to lock.
A 360B VNA that is using a 3612A,
3613A, 3622A, 3623A, or 3631A
Test Set and a 681XXB Source in SS
Mode should not be operated above
60 GHz because it will fail to lock.
For operations above 60 GHz, use
the 681XXB Source in tracking
mode.
7-14
681XXB OM
