Interface Connectors - HP 8340B Manual

J16
-
Stop Sweep
In /
Out
Grounding this Input Stops the
Sweep.
Forward sweep stops when
this line
is
grounded, and
resumes when the input is released from ground.
If
the input
is
grounded during retrace, retrace
continues, but the next sweep does not begin
until
the input
is
released from ground.
Stop Sweep Indicates when Sweep Stops. As an output,
a
TTL
low indicates that the
sweep has
been stopped by the synthesizer.
NOTE:
For more information on the preceding
BNC signal operating
parameters, refer to
the HP
8340B/8341B
Operating Manual.
INTERFACE CONNECTORS
J17
—
8755C Alternate Sweep Interface
The
synthesizer can sequence alternate sweeps in
the HP
8755C scalar network analyzer
using an
interface cable
(HP
part number 8120-3174). Figure G-17 shows the pin
configuration and
a
complete description of the sweep interface signals.
ALTERNATE SWEEP INTERFACE CONNECTOR
J17
8755C
ALT SWP
INTERFACE
®
(viewed from rear of instrument)
Pin
1
2
3
Mnemonic
LALTEN
LALTSEL
LRETRACE
Description
LOW
to Externally
Enable
ALT SWP
Mode
In
HP 8755C
Channel Select
(HIGH
=
Channel
1,
LOW
=
Channel 2)
LOW During
Retrace
Level
TTL OUTPUT
TTL OUTPUT
TTL OUTPUT
Wire
Color Code
9-1-5
9-1 -6
9-1 -7
A62J31
Pin
23
24
25
Source
A57P1-60
A57P1-59
A57P1-58
Figure G-17.
8755C Alternate Sweep Interface (J17)
Rear Panel Theory of Operation
HP 8340B/41B