HP 8340B Manual page 315

TROUBLESHOOTING THE 8410 INTERFACE 40 GHz CONTROL SIGNALS
This
troubleshooting procedure provides information
on exercising the
four HP 8340
data control
lines needed
by an
S-parameter test set to extend the operating frequency range.
A
controller
is
used to exercise each of the four data control
lines.
If
any of the data control lines
fail
to
perform
as Indicated In
the procedure, troubleshoot the A57
marker/bandcross or the
A60 processor
assemblies.
The test equipment needed
is
an oscilloscope and
a
200
series controller.
200-SERIES
CONTROLLER
CHAN
A
Figure G-19a.
40GHz Data Control
Lines Troubleshooting Setup.
Commands entered on the controller
exercise rear
panel data control
lines.
Procedure
1.
Connect
the
equipment as shown
in Figure G-19a. Turn the equipment on.
2.
On the synthesized
sweeper, press [INSTR PRESET].
3.
Connect the oscilloscope probe to
pin
11
of the 8410 INTERFACE
connector. Observe the trace on
the oscilloscope
CRT.
This trace is the reference
line.
4.
On the controller, enter the following commands:
OUTPUT
719;
"IM,
2.
2.0E10, 4.0E10, 2.0E10,
4,
4.5E07,
0,
0.5,
0,1, 0"
OUTPUT 719;
"EM1, 40GHZ"
The HP-IB address of the synthesized sweeper
is
assumed
to be
19.
HP 8340B/41B
Change
7
Rear Panel Theory of
Operation