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Operation
Table 4-4
Information
messages
Message
Key(s)
Description
IN
255
OUT
000
MENU
Digital input status
and
digital
output parameter
(decimal
values).
EXT
TRIG FALL
MENU
Falling
edge
external trigger
pulse.
EXT
TRIG
RISE
MENU
Rising
edge
external trigger
pulse.
MATRIX
RDY LO
MENU
Matrix
Ready
pulse
active low.
MATRIX RDY
HI
MENU
Matrix
Ready
pulse
active high.
STANDALONE
MENU
Stand-alone operation of
Model
707A.
MASTER
MENU
Master
unit
in
master/slave configuration.
IEEE-488
18
MENU
IEEE-488
bus address of
1
8.
HWSETL
015
mS
MENU
Longest
relay settling
time of
present card con-
figuration
(Model 7073
is
shown).
1
7071
MENU
Card
configuration
by
slot
and model
number
(Model 7071
in slot
1 is
shown).
SFT
F
TFST
MENU
Item
to select self-test
execution.
FACTORY
INIT
MENU
Item
to
select
factory defaults (setups
cleared).
SETL
00000
mS
SETTLING TIME
Programmed
settling
time (added
to relay
set-
tling
time).
TRIG
ON
EXT
SOURCE
External
trigger
pulse
triggering.
TRIG
ON
KEY
SOURCE
Front panel
key
triggering.
TRIG
ON
TALK
SOURCE
IEEE
talk
command
triggering.
TRIG
ON
GET
SOURCE
IEEE
GET
command
triggering.
TRIG
ON X
SOURCE
IEEE
X
command
triggering.
NOT
SETTLED
—
Additional
trigger
received before
programmed
settling
time expired
(trigger
is
processed).
4.4.3
IEEE-488
status indicators
The TALK, LISTEN,
and
REMOTE
LEDs
(shown
in
Figure
4-2)
indicate these
modes when
the
Model
707A
is
being
programmed
over
the
IEEE-488
bus.
The
TALK
and LIS-
TEN
indicators
show when
the unit
has
been addressed
to
talk
or
listen.
These
talk
and
listen
commands
are
derived
from
the
unit's
primary
address.
REMOTE
turns
on
to
show
when
the unit
is
placed
in
remote by
addressing
it
to listen
with
the
REN
line
true.
(All front
panel controls
except
LOCAL
and
POWER
are inoperative
when
REMOTE
is
on.)
Local
operation
is
restored
by
pressing
LOCAL
unless the
IEEE-488
LLO
(Local
Lockout)
command
is
in effect-
See
Section 5
for details
of
IEEE-488
bus
operation.
4.4.4
Crosspoint
display
LEDs
As shown
in
Figure
4-3, the
crosspoint display
has
six
blocks
of
LEDs
(one per card
slot).
Each
block
has 8
rows (A-H)
by
1
2 columns
(1-12,1 3-24,
etc.)
of
LEDs. The
display
LEDs
can
show
the current
open/closed
relay
states,
the on/off
states
of
a setup
from
in
memory,
or the on/off
states
of
a
setup currently
being
edited.
The
on/otf
states
of
crosspoint
LEDs
can be
changed by
front
panel keys,
commands
over
the bus, or
an
optional
light
pen.
Modified
displays
can be
stored
in
memory
or sent
to
the
relays.
4-6
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