 The T8A, 8 channel analog I/O expansion card, provides
eight channels of 0-5 Volt 12-bit analog input.
The T8A has a built-in multidrop controller (DS2406) which provides a unique
64 bit registration number (8-bit family code + 48 bit serial number + 8 bit CRC)
assuring error-free selection and absolute identity; no two parts are alike. Unique
addressing allows I/O function to be identified absolutely, no more dip switch address
confusion. The DS2406 provides the 1-Wire gateway for the 12-bit analog data acquisition
sub-system. The analog inputs (1-8) are connected to the 8 connector positions 1-8
respectively. Positions at either end of the I/O connector marked "G" are ground
returns.
The T8A is designed to allow a network of input and output modules to operate
on a two or three wire bus, power("+"), common("C") and signal("S"). The T8A can
be powered locally or the power may be bussed with the 1-Wire signal in a three
wire system. The bussed power can be unregulated 8V to 16V DC. The T8A provides
onboard 5-volt regulation for I/O and analog sub-system operation. The onboard power
supply has a very low quiescent current and low dropout voltage to allow long cable
runs with minimum loss. The T8A can be stacked side by side for minimum panel space,
or they can be spaced hundreds of feet apart to minimize analog signal wiring.
The T8A is compatible with the EDS OneSix DDE server and family of 1-Wire enabled
devices, as well as any 1-Wire host with support for the Dallas Semiconductor
DS2406
Dual Addressable Switch and EDS Analog.
Features
- 8 channels 12-Bit 0 to 5 Volt analog inputs
- All data transfers are CRC16 error checked.
- Built-in multidrop controllers, (DS2406).
- CAT-5 twisted pair up to 2000 Feet, 200 devices.
- Uses 1-Wire Communication Protocol.
- Built-in mounting spacers and Phoenix screw connectors.
- Second 1-Wire connector for easy net expansion.
Specifications
- Supply Voltage: 8 - 16.6 Volts
- Supply Current: 3 - 8 mA
- Analog input range: 0 - 5 Volts
- Analog Input resolution (Positions 1-8): 0.00122 Volts
- Analog Input Impedance (Positions 1-8): 100 KOhm
1-Wire is a registered trademark of Dallas Semiconductor Corporation. Phoenix
is a trademark of Phoenix Contact.
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