參數(shù)資料
型號(hào): PCL-818L
廠商: Electronic Theatre Controls, Inc.
英文描述: High-performance DAS card with programmable gain
中文描述: 高性能DAS的可編程增益卡
文件頁(yè)數(shù): 28/74頁(yè)
文件大小: 546K
代理商: PCL-818L
24
PCL-818L User's Manual
Incorrect connection
Expanding analog inputs
You can expand any or all of the PCL-818L's A/D input channels with
multiplexing daughterboards. Most daughterboards require the
PCLD-774 Analog Expansion Board or the PCLD-8115 Screw
Terminal Board for connections.
The PCLD-789 Amplifier and Multiplexer multiplexes 16 differential
inputs to one A/D input channel. You can cascade up to eight PCLD-
789s to the PCL-818L for a total of 128 channels. See the PCLD-779
user's manual for complete operating instructions.
The PCLD-774 Analog Expansion Board accommodates multiple
external signal-conditioning daughterboards, such as PCLD-779 and
PCLD-789. It features five sets of on-board 20-pin header connectors.
A special star-type architecture lets you cascade multiple signal-
conditioning boards without the signal-attenuation and current-
loading problems of normal cascading.
The PCLD-8115 Screw Terminal Board makes wiring connections
easy. It provides 20-pin flat cable and DB-37 cable connectors. It also
includes CJC (Cold Junction Compensation) circuits which let you
directly measure thermocouples with your PCL-818L. You can handle
all types of thermocouples with software compensation and lineariza-
tion.
Special circuit pads on the PCLD-8115 accommodate passive signal
conditioning components. You can easily implement a low-pass filter,
attenuator or current shunt by adding resistors and capacitors.
GND
+
Vs
-
+
Vin
-
+
-
HIGH
LOW
Vin=Vs+Vcm
Vcm
+
_
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