VT1536A Isolated Digital Input/Output SCP 3
VT1536A Isolated Digital Input/Output SCP

Introduction

The VT1536A is an eight-channel Isolated Digital I/O SCP. Channels are
switch configurable as either input or output on a channel-by-channel basis.
Input-configured channels provide:
•Optically coupled isolation
•Individual switch selectable threshold levels of 5, 12, 24 and 48 VDC
•Two programmable debounce timers (150 µs to 2.4 s); one for the
SCP's lower 4 channels and one for the SCP's higher 4 channels.
•Programmable polarity
Output-configured channels provide:
•SPST Solid-state relay output
•200 mA current carrying capability
•Relays protected by active voltage clamping
•Programmable polarity

About this Manual

This manual shows you how to configure the Signal Conditioning Plug-on
(SCP) using SCPI commands and explains th e capabilities of this SCP.
The contents of this manual are:
•Identifying the Plug-on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
•Setting Configuration Switches . . . . . . . . . . . . . . . . . . . . . . . . page 4
•Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5
•Connecting To The Terminal Module. . . . . . . . . . . . . . . . . . . . page 5
•Recommended Signal Connections . . . . . . . . . . . . . . . . . . . . . page 6
•Input and Output Characteristics. . . . . . . . . . . . . . . . . . . . . . . . page 7
Output Voltage Clamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8
•Programming With SCPI Commands. . . . . . . . . . . . . . . . . . . page 10
Configuring Input Channel Polarity . . . . . . . . . . . . . . . . . . . page 11
Setting Debounce Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11
Configuring Output Channel Polarity. . . . . . . . . . . . . . . . . page 13
•Programming with the VT1415A/19A Algorithm Language. page 14
•*RST and *TST? (Important!) . . . . . . . . . . . . . . . . . . . . . . . . page 14
•Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15