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Model 8902A
Operation
3-13. BASIC FUNCTIONAL CHECKS OF THE HEWLETT-PACKARD INTERFACE BUS (HP-IB)
Description
The following ten procedures check the Measuring Receiver's ability to process or send all of the
applicable HP-IB messages described in paragraphs 3-1 2 through 3-3 1. In addition, the Measuring
Receiver's ability to recognize its HP-IB address is checked and all of the bus data, handshake
and control lines except DI08 (the most significant data line which is not used by the Measuring
Receiver) are set to both their true and false states. These procedures do not check whether or not all
Measuring Receiver program codes are being properly interpreted and executed by the instrument;
however, if the front panel operates as expected, the program codes, in all likelihood, will be correctly
implemented.
The validity of these checks is based on the following assumptions:
The Measuring Receiver performs properly when operated via the front-panel keys (that is, in
local mode). This can be verified with the preceding Basic Fiinctional Checks of the Measuring
Receiver in paragraph 3-1 1.
e
The bus controller properly executes HP-IB operations.
The bus controller's HP-IB interface properly executes the HP-IB operations.
If the Measuring Receiver appears to fail any of these HP-IB checks, the validity of the above
assumptions should be confirmed before attempting to service the instrument.
The select code of the controller's HP-IB interface is assumed to be 7. The address of the Measuring
Receiver is assumed to be 14 (its address as set at the factory). This select code-address combination
(that is, 714) is not necessary for these checks to be valid. However, the program lines presented here
would have to be modified for any other combination.
These checks are intended to be as independent of each other as possible. Nevertheless, the first four
checks should be performed in order before other checks are selected. Any special initialization or
requirements for
; I
check are described at its beginning.
Initial Setup
The test setup is the same for all of the checks. Connect the Measuring Receiver to the bus controller
via the HP-IB interface.
Do
not connect any equipment to any of the Measuring Receiver's input
connectors.
Equipment
HP-IB Controller
..............
HP 9825A/982 I3A(General and Extended 1/0 ROM)
or
......................................................
HP
9835A/98332A(I/O
ROM)
o r . .
................................................
HP 9845A(with HP-IB capability)
HP-IB
Interface..
........
.HP
98034A (use "revised" version with 9835A and 9845A)
The HP 9825A uses
HPL.
The HP 9835A and HP 9845A use BASIC. You can also
use HP Series 200 Controllers which use BASIC. (Code differences exist bet.ween the
BASK used by the HP 9835A and HP 9845A and the BASK used by the HP Series
200 Controllers. These code differences are specified in the procedure.)
3-59
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