HP 5335A - Page 46

Operation and Programming
3-154. This section describes how to use the 5335A on the HP-iB. Before programming, the
operator must be familiar with the selected computing controller (e.g., the 9825A, 9830A, or
9835/45A calculators}, the capabilities of the HP-IB, and the manual operation and capabilities
of the 5335A. The following HP manuals provide useful background information:
HP-iB User Guide, 9830A (P/N 59300-90002)
Hewlett-Packard 9825A Calculator General I/O Programming (P/N 09825-90024)
Hewlett-Packard 9825A Calculator Extended I/O Programming (P/N 09825-90025)
Condensed Description of the Hewlett-Packard Interface Bus (P/N 59401-90030}
Abbreviated Description of Hewlett-Packard Interface Bus (P/N 5955-2903}
HP-IB Quick Reference (P/N 5955-2902)
3-155. Interface Function
3-156. The capability of a device connected to the bus is specified by its interface functions.
Table 3-3 lists the 5335A Interface Functions using the terminology of the IEEE 488-1978standard.
These features are also listed below the rear panel HP-IB connector, as follows:
SHI, AH1, T1, TE0, L2, LEO, SRI, RL1, PP0, DC1, DTI, C0
Table 3-3. HP-IB Interface Capability
INTERFACE FUNCTION
SUBSET IDENTIFIER
INTERFACE FUNCTION DESCRIPTION
SHI
Complete source handshake capability.
AH1
Complete acceptor handshake capability.
T1
Talker (basic talker, serial poll, talk only mode)
TE0
No extended talker capability.
L2
Listener (basic listener, no listen only mode, does not unaddress
to listen if addressed to talk).
LEO
No extended listener capability.
SRI
Service request capability.
RL1
Complete remote/local capability.
PP0
No parallel poll capability.
DC1
Device clear capability.
DTI
Device trigger capability.
C0
No controller capability.
3-157. The number following the interface function code indicates the particular capability of
that function as listed in Appendix C of IEEE Std. 488-1978. Interface functions provide the means
for a device to receive, process, and send messages over the bus.
3-158. Nearly all controls on the 5335A can be programmed remotely, and data from measure¬
ments can be sent to other devices through the HP-IB. The TALK, LISTEN, SRQ, and REMOTE
annunciators in the display will indicate the state of the instrument. The following paragraphs
describe the basic programming capability of the 5335A Universal Counter.
TALK: When addressed as a Talker, whether by a controller or by the
TALK ONLY switch, the 5335A will try to send data out to other
devices on the bus. Normally this data is the measurement data.
3-30
Model 5335A