Tektronix 070-9180-01 - Manual (Page 11)

Option 01 VXI Interface Module User Manual 1–1
Getting Started
This section begins with a brief description of the Option 01 VXI Interface
Module, and explains how to configure and install the module on a relay
switching module in a VXIbus mainframe. When the Option 01 is installed on a
relay module, a quick functional check (described in this section of the User
Manual for the relay module) assures that the instrument operates properly.
Product Description
The Option 01 VXI Interface Module is a printed circuit board assembly for use
in a mainframe conforming to the VXIbus Specification. The Option 01 provides
a VXI word serial protocol servant interface to the SurePath
t family of VXI
relay modules. The Option 01 is a daughter board assembly measuring approxi-
mately 3
I ×
9
I that is installed as an optional daughter board on one of the
SurePath
t C-size VXI switching modules. The daughter board accepts
SCPI-compatible commands from its commander using VXI word serial
protocol. The daughter board controls the relay module on which it is installed,
and controls additional relay modules installed in adjacent slots to its right via
the VXI P2 local bus. The daughter board is capable of controlling from one to
12 relay modules including members of the SurePath
t family of relay switching
modules and VX4372 and VX4374 Scanner Slave modules. In this document,
these modules will be referred to as “local bus slaves.”
The VXI Interface Module includes the following features:
H CPU:
Zilog Z88C00 Microcontroller with 20 MHz Clock
64 Kbyte of EPROM and 32 Kbyte of RAM
H VXI Interface:
VXI Rev 1.4 Message Based Device. IEEE-488.2 device
Supports Fast Handshake word serial protocol data transfers
Logical Address selectable with two rotary hexadecimal switches
Interrupter level selectable with a rotary hexadecimal switch. Selects one of
seven levels or disables interrupt generation
Command programmable control of one to eight VXI TTL triggers
Command programmable monitoring of one or more VXI TTL triggers
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