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2.3.2
Cards
Power Supply Card
Provides 45 watts of power for the detector electronics.
Memory Card
Contains memory chips used by the CPU card.
Supply Control/Relay Card
Interfaces to the CPU. The 16-bit recorder output digital-to-analog
converter includes an electronic switch for selection of full-scale outputs
of 0.01, 0.1, and 1.0 V.
SP (Signal Processor) Card
Contains the digital circuitry to interface to the CPU, as well as all the
analog circuitry required for each detection mode. Appendix E lists the
SP card functions.
Relay/DX-LAN and CPU Cards
The Dionex ED50A control Moduleware and BIOS reside on the CPU
logic and Relay I/O cards.
•
The CPU card provides control and monitoring of the other modules.
A 60-pin ribbon cable assembly links the logic to the Dionex ED50A
front panel display and keypad.
•
The Relay I/O card provides two isolated low voltage relay outputs,
two TTL outputs, and four TTL inputs.
The cards are in slot 5 of the card cage. The Relay card is a half-card
which rides piggyback on the CPU card and extends over the front of slot
4.
The Relay I/O card is short enough to allow a detector interface card to be
mounted behind it in slot 4. The interface card is required for
communication between the Dionex ED50A and the control software,
Chromeleon 6.8.
Below the I/O connections is a multicolor LED that indicates the state of
the power supply.
Doc. 065551-01 6/13
2 • Description
2-9
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