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Hytec Electronics Ltd 8424TR/UTM/G/21/2.0

Page 21

7.10 Digital Inputs And Outputs In Transient Recorder Mode

7.10.1 Start IN/ExTrig

This input can be used to start the digitisation with a high or low (select in Ext CSR) going edge.

The signal comes in to the unit via the rear transition card see appendix B.

7.10.2 Start Out

The Start IN digitisation signal is gated to Start OUT to allow a single start signal to trigger multiple

units. The signal comes in to the unit via the rear transition card see appendix B. This output can be

configured to be either high or low TTL signal level (select in TR CSR).

7.10.3 Stop IN

This stops the unit digitising, the unit can be triggered again once this signal is removed. This signal is

ORed with the software stop bit in the TR CSR. The external Stop IN signal comes in to the unit via the

rear transition card see appendix B. This input can be configured to except either a high or low TTL

signal level (select in TR CSR).

If the unit is stopped by either the software stop or the External stop bit when the stop bit is released the

pre-trigger delay will be indicated.

7.10.4 Stop Out

This feeds the Stop signal to the out to the rear transition card (see appendix B). This output can be

configured to be either high or low TTL signal level (select in TR CSR).

7.10.5 Clock In

This allows an external sample clock to be used up to 1MHz. The signal comes in to the unit via the rear

transition card see appendix B.

7.10.6 Clock Out

This allows the internal sample clock (as set by ADC Sample Rate Reg at 6hex) to be feed out to the rear

transition card (see appendix B).

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Enable-IT 8424 Bedienungsanleitung Seite 21