HP 8340B Manual page 316

5.
On the oscilloscope
CRT
observe
a
positive going
TTL
pulse occuring once
every sweep.
6.
Connect the oscilloscope probe
to
pin 10
of the
8410 INTERFACE
connector Observe the
refer¬
ence
line trace on the CRT.
7.
On the controller, enter the following
command:
OUTPUT 719;
"IM, 2, 2.0E10, 4.0E10, 2.0E10,
4,
4.5E07,
0, 0.5, 0, 2,
0"
8.
On the oscilloscope
CRT observe
a
positive going
TTL
pulse occuring once every sweep.
9.
Connect the oscilloscope probe to
pin 17
of
the 8410
INTERFACE
connector. Observe the refer¬
ence
line trace on the CRT.
10.
On the controller, enter the following command:
OUTPUT 719;
"IM, 2. 2.0E10, 4.0E10, 2.0E10.
4,
4.5E07.
0, 0.5,
0, 4,
0"
11 On the oscilloscope
CRT observe
a
positive going
TTL
pulse occuring once
every sweep.
12.
Connect the oscilloscope probe to
pin
4 of the 8410 INTERFACE
connector.
Observe
the
refer¬
ence
line
trace
on the
CRT.
13. On the controller, enter the
following
command:
OUTPUT 719; "«M, 2,
2.0E10, 4.0E10, 2.0E10,
4. 4.5E07. 0,
0.5, 0, 8,
0"
14. On
the oscilloscope
CRT
observe
a positive going
TTL
pulse occuring once every
sweep.
This completes the troubleshooting procedure for these four data control
lines.
If
any of the lines fail
to perform as indicated
in
the procedure, troubleshoot the A57 marker/bandcross or the
A60
pro¬
cessor assemblies.
G-46b
Rear Panel Theory of Operation Change
7
HP 8340B/41B