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Overview:
The BLS-124A is an isolated 24-bit digital input plug-in card
for use in TTC’s CDAU/EDAU/WDAU-2000 products. The
card provides a 24-bit digital input value for transmission in
the system PCM output format and is intended for
applications with multiple on/off signals requiring galvanic
isolation of up to 1,000 VDC, from bit to bit and/or from all bits
to system ground. All inputs are differential via high-speed
opto-isolators requiring only 2.2mA of LED current for a logic
1 state. When the + side of an input is connected to the
+3.3V or +5V supply rail, the – side may be driven directly by
a TTL compatible output. In this configuration, the TTL output
will nominally sink 3.9mA. Inputs are current limited to 3.9mA
with reverse polarity and overvoltage protected to ±60VDC.
The card has 2 data trigger/latch modes and the capability for
time tagging discrete data inputs. These features result in a
high performance discrete card for interfacing with a wide
variety of digital subsystems.
Download Product Brief (PDF)
(please contact SUPPORT for complete data sheets & further information)
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