HP 8901B - Page 202

Model 8901B Service
Service Special Functions (Prefix 40-99)
The Service Special Functions are used to perform a variety of tasks related to service. The functions
are cataloged below. A suffix
N indicates that a parameter other than 0 may be required to complete
the Special Function code. Information within pointed brackets appears on the Modulation Analyzer
display. See Table 8B-1 for entry of hexadecimal suffixes (A,
B, C, D, E, and F).
40.0 Controller Reset. Initializes the Controller to its power-up state and is equivalent to switching
the POWER switch to STBY and back to ON. Because this function affects the HP-IB hardware,
it is unavailable from HP-IB (causes Error 24). See Default Conditions and Power-Up Sequence in
Section
3.
41.0 Controller Clear. Initializes the Controller to its power-up state but bypasses the operational
checks and
is equivalent to pressing the blue key and INSTR PRESET (Instrument Preset) or giving
the device clear command via HP-IB. Leaves HP-IB hardware unaffected but clears any service request
message
(SRQ) being issued by the Measuring Receiver, sets the service request condition to its power-
up state, and clears all bits in the status byte. See
Default Conditions and Power-Up Sequence in
Section
3.
42.0 Display Software Date. Displays the date of the software in the form <day of year>.<year>.
The display times out after
5s.
43.N Measurement Progress and Service Error Message Display Control. Measurement Progress
Error Messages are
Errors 40 through 64. Service Error Messages are Errors 65 through 89. Refer to
Error Messages, paragraph 8-8.
N=O
N=l
Disables display of Service Error Messages (65 to 89).
Enables display
of Service Error Messages (65 to 89). Cleared by the AUTOMATIC
OPERATION key.
Enables display of Service Error Messages
(65 to 89). Not cleared by the AUTOMATIC
OPERATION key.
to N=89 Enables measurement to pause on the Measurement Progress and Service Error
Message determined by N. See
Error Messages, paragraph 8-8.
N=140 to
N=189 Enables measurement to halt on the Measurement Progress and Service Error
Message determined by N. See Error Messages, paragraph 8-8.
N=2
N=40
Special Functions 8B-5