Rohde & Schwarz SME02 - Annex; IEC;IEEE Bus Interface; Characteristics of the Interface; Bus Lines

SME IEC/IEEE Bus Interface
1038.6002.02 6A.1 E-12
Annex A
IEC/IEEE Bus Interface
The instrument is equipped with an IEC/IEEE-bus connection as a standard. The mating connector
according to IEEE 488 is at the rear of the instrument. A controller for remote control can be connected
via the interface. The connection is effected using a shielded cable.
Characteristics of the Interface
ì 8-bit parallel data transfer
ì bidirectional data transfer
ì three line handshake
ì high data transfer rate of max. 350 kByte/s
ì up to 15 devices can be connected
ì maximal length of the connecting cables 15 m (single connection 2m)
ì wired OR if several instruments are connected in parallel.
12
1
13
24
shield SRQ NDAC DAV DIO4 DIO2
logic GND GND(10) GND(8) GND(6) REN DIO7
GND(11) GND(9) GND(7) DIO8 DIO6 DIO5
ATN IFC NRFD EOI DIO3 DIO1
Fig. A-1 Contact Assigment of the IEC-bus socket
Bus Lines
1. Data bus with 8 lines DIO 1 to DIO 8.
The transmission is bit-parallel and byte-serial in the ASCII/ISO code. DIO1 is the bit of lowest order,
DIO8 the bit of highest order.