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6-2
2.
Display
test
Key
in:
02;
display:
'02'.
All seven-segment
digits
and
LEDs
(except
'REMOTE')
are lightened.
By
pushing
any key
except
E
TER'
they
are
switched
off
and
on.
'ENTER'
switches to the
next
part of
this
test:
—
all
displays
show
0,
1
,
2,
...
9.
—
an
'8'
is
passing
from
the leftmost
to
the rightmost display
position.
—
all
display
segments
('8')
and
decimal
points are
flashing.
Pushing any key
ends
this
test:
—
a
decimal point
passes
from
the
left
of the display to
the
right.
The
initial
d
i
splay
'00'
appears
on
the
2
leftmost positions of the
frequency
display
field.
3.
RAM
test
Key
in:
03;
display:
'03'.
This
test
checks
the
CMOS-RAM
(data
memory),
IC
313,
unit
1,
and
the
RAM
section
within 1C 318,
8155. The
test
duration
is
ca.
7
s. If
no
failure
is
detected
'00'
is
displayed,
see
above.
Error
indication:
1st position
:
c
=
CMOS-RAM,
IC313
1
=8155 RAM,
IC318
4th
—
6th
position:
address within the 1C (decimal)
7th
9th
position;
written data
(decimal)
10th
—
12th
position: read
data
(decimal)
4.
Port
test
Key
in:
04;
display:
'04'.
All
output
ports are
set
to high
level:
unit
1,
!C
318,
pins 21
-
35 and
unit
2,
ICs
305/309,
pins
1-4,
10-25,37-40.
Pushing any key except
'ENTER'
effects
alternating
low and
high
level
at
all
ports.
During
high
level
the
LEDs
MOD
INT/EXT,
AM, SWEEP SINGLE/CONT
are
lighting,
LEDs
FM
and
V
IDEO
are flashing simultaneously.
'ENTER'
ends the
test.
5.
lEEE/lEC
bus
test
The
test
is
activated
by
addressing the instrument
via
the
I
EC
bus.
After
addressing the
'REMOTE' LED
is
lit.
The
numerical
digits
sent
after this
are
displayed
on
the
1^0
first
display
positions.
If
more
digits
are sent
they
will
overwrite the preceding
digits starting
at
the
left
position.
Only
numerical
digits
are
accepted, other characters are ignored.
After
reception of
DCL
(Device
Clear)
or
SDC
(Selective
Device
Clear)
'ccccccc
is
displayed.
Example
for
a
small
I
EC
bus
test
routine using
hp-85
controller:
10
RESET
7
20 REMOTE
704
30 OUTPUT
704;
"
1234567S90"
40 PAUSE
50 OUTPUT
704;
"0000000000"
60 PAUSE
70 CLEAR
704
80 PAUSE
90 OUTPUT
704;
"6666666666"
100 PAUSE
110 LOCAL 704
120 PAUSE
130 SOTO 20
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