HP 8901B Operation And Calibration Manual page 177

Model
8901B
Operation
Receiving the Data Message Check (Data Input).
This
check determines whether or not the
Modulation Analyzer properly receives Data messages.
The
Data messages sent also cause
the 7 least-
significant
HP-I33
data lines t o be placed
i n
b o t h their true
and
false states.
This
check assumes
the Modulation Analyzer i s able to handshake, recognize its own address,
and
properly make the
remote/local transitions. Before beginning this check, select 40.0
SPCL.
~~
Description
Send the first part of the
Remote message (enabling the Modulation Analyzer to remote.
Address the Modulation Analyzer to listen (complete
the Remote message), then send a Data message
(manually tuning the Modulation Analyzer to
1
MHz.
Check that the Modulation Analyzer's REMOTE and LIS-
TEN annunciators are on. Check also that its 15 kHz LP
FILTER key light is on and the AUTO TUNING light is off.
HPL
rem 7
wrt
7 1
4 , " l
MZ"
BASIC
REMOTE 7
OUTPUT
7143
MZ"
Local Lockout and Clear Lockout/Set Local Messages Check. T h i s check determines whether
or
not the Modulation Analyzer properly receives t h e
Local
Lockout message, disabling all fiont-panel
keys.
The
check also determines whether
or
n o t the
Clear
Lockout/Set Local message i s properly
received
and
executed
by
t h e Modulation Analyzer. This check assumes that t h e Modulation Analyzer
i s able t o handshake, recognize its own address,
and
properly make the remote/local transitions. Before
beginning this check, select
40.0
SPCL.
Description
Send the first part of the
Remote message (enabling the Modulation Analyzer to remote).
Send the Local Lockout message
Address the Modulation Analyzer to listen (completing the Remote
message).
Check that the Modulation Analyzer's REMOTE and LISTEN
annunciators are on. Press the Modulation Analyzer's LOCAL
key. Both its REMOTE and LISTEN annunciators remain on.
Send the Clear Lockout/Set Local message.
Check that the Modulation Analyzer's REMOTE an-
nunciator is off but its LISTEN annunciator remains on.
HPL
rem
7
I 1 0
7
wrt
714
IC1
7
BASIC
REMOTE 7
LOCAL LOCKOUT
7
OUTPUT
7 1 4
LOCAL 7
3-59