Instruction manual

IEEE-488 INTERFACE COMPATIBILITY :

Although the IEEE-488 Interface specification is called a standard, variations in

implementation within the specifications are permitted. These variations determine the

capabilities of the particular interface and a list of abbreviations are defined in the Stan-

dard Document to indicate to the User which Interface capabilities have been designed

in. The TABLE 6.3 below gives the options, which are implemented in this instrument.

CODE INTERFACE FUNCTION

SH1 Source Handshake Complete Capability

AH1 Acceptor Handshake Complete Capability

T6 Talker Function.(Basic Talker, Serial Poll, Unaddressed to Talk if

Addressed to Listen).

TE0 No Address Extension Talker Mode

L4 Listener Function.(Basic listener, Unaddressed to listen if Ad

dressed to Talk).

LE0 No Address Extension Listener Mode

SR1 Service Request Complete Capability

RL1 Remote / Local Complete Capability (Including Local Lock Out).

PP0 No Parallel Poll Capability.

DC1 Device Clear Complete Capability

(Accepts DCL & SDC commands and generates a communica

tion soft reset and flashing out the buffer).

DT0 No Device Trigger Capability

C0 No Controller Capability

E1 Tristate driver (Jumper selectable between tristate and open

collector).

TABLE 6.3

6.10 SRQ HANDLING DETAILS

This Programmable Instrument has been configured for SR1 function (Com-

plete SRQ Capability). To make use of this feature you must configure your BUS con-

troller to respond to the IEEE-488 Service Request (SRQ) Interrupt. This unit does not

support Parallel Poll capability.

THE SERVICE REQUEST ENABLE (SRE) REGISTER

The Service Request Enable (SRE) register will enable only those events in

the Status Byte Register to generate an SRQ, when the corresponding bit in the SRE

command *SRE<SP><NR.DATA>, the reasons to generate an SRQ can be defined.

The following table gives the bit definitions of the Service Request Enable (SRE)