Specifications

ZVx Interfaces

1043.0009.50 A.1 E-8

Annex A - Interfaces

A.1 IEC Bus Interface (SCPI IEC625, SYSTEM BUS)

The standard network analyzer is equipped with twp IEC/IEEE bus connectors. The IEEE 488 interface

connector is located on the rear panel of the instrument. An external controller for remote control of the

networkanalyzer can be connected via the IEEE 488 interface connector using a shielded cable.

The third IEC Bus interface is assigned to the MS-DOS processor, with an installed processor option.

This interface can be controlled by standard software (R&S-Basic, QUICK-Basic, etc.) under MS-DOS

as well as under WINDOWS (VISUAL BASIC, etc.) with the delivered driver software. The IEC Bus

interface allows the remote control of the network analyzer via an external connection to both IEC Bus

interfaces and, in addition, the control of other instruments via the IEC Bus interface located on the rear

panel (e.g., control of a complete measurement system).

The following section describes the first IEC Bus interface over which the network analyzer can be

remotely controlled. The characteristics of the PC2A/PC-AT controller interface depend upon the user-

installed software running on the MS-DOS processor and is, therefore, not described here.

Interface Characteristics

• 8-bit parallel data transfer

• bidirectional data transfer

• three-line handshake

• high data transfer rate of max. 350 kbyte/s

• up to 15 instruments can be connected

• maximal length of the interconnecting cables 15 m (single connection, 2m)

• wired-OR connection if several instruments are connected in parallel.

SHIELD SRQ NDAC DAV DIO4 DIO2

LOGIC GND GND(10) GND(8) GND(6) DIO8 DIO6

GND(11) GND(9) GND(7) REN DIO7 DIO5

ATN IFC NRFD EOI DIO3 DIO1

Fig. A-1 Pin assignment of IEC-Bus interface