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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 the 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