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Resetting the Multiplexer
Reading the Relay
Control Registers
Appendix B
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There are two ways to reset the multiplexer:
1 You can write a "0" to all bits in the Relay Control Registers.
2 You can use bit 0 (R) in the Status/Control Register. The R bit in
the Status/Control Register must be set to "1" to reset the E1476A
module and subsequently set to "0" to restore normal operation.
NOTE
You must wait at least 100 msec after writing a "1" to the R bit of the
Status/Control Register before you write a "0" to that bit to restore normal
operation.
Reading the Relay Control Registers returns a hexadecimal number that
indicates a "1" for each bit representing a channel that is closed. A bit that
is "0" indicates the channel is open.
Register-Based Programming 107
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