Inputs/Outputs
Pin
No.
8
21
20
11
and 22
Model
8754A
J7
PROGRAMMING
PIN
FUNCTIONS
(Cont'df
Function
J7
INPUTS
(Cont'd)
8748A
S-Parameter Select.
o= Test Set in reverse
(S22
and S12)
1 = Test Set in forward
(S11
and
S21
)
Not used in 8754A.
8754A Remote Select.
1 =
8754A
Local
o=
8754A
Remote
Selecting Remote switches
the
internal sweep generator
to
the EXT SWEEP mode,
disables the
Front
Panel receiver controls, and enables remote
A/R
or
B/R
select
(J7 pin 20).
Remote
A/R
or
B/R
select.
1 = Selects
A/R
o= Selects
B/R
Controls selection
of
detector
outputs
applied
to
J7 pins
11
and 22, and MAG/
PHASE
output.
Enabled
by
J7 pin 21, 8754A Remote Select. (See also J7 pin 19).
If
not
enabled,
outputs
are selected
by
front panel controls.
J7
OUTPUTS
Two identical Magnitude
or
Phase Outputs. They are the same
as
rear-panel
MAGI
PHASE
output.
Magnitude::
-0.1
V/dB
Phase
= -0.01V/degree
Output
is
determined
by
J7 pins 20 and 19
as
follows:
Magnitude/Phase: Selected
by
J7 pin 19.
A/R
or
B/R: Selected
by
front-panel (local operation)
or
by
J7 pin 20 (remote
operation).
For
magnitude ratio, Front-panel REFERENCE and OFFSET do
not
affect
output.
For
phase, REFERENCE, OFFSET, and LENGTH are included in
output
unless
8754A
Remote Enable,
J7
pin 21, is selected.
42
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