TRICONEX 4507 Channel isolation module

Write $9000 to CSR (relative address $0002). This enables the External Trigger. The indicated CSR code also establishes the following conditions: • LED turned off • Data stored in offset binary format • Interval Timer configured as 16-bit counter • Data ready flag activated at end of data buffer Write $5840 to CCR (relative address $0004). This sets the scan mode to Single Scan. The indicated CCR code also establishes the following conditions: • Buffer size of 64 words • Block size of 64 channels • Interrupt on data ready flag if interrupt is enabled • Fixed gain x1 The board is now in the Single Scan External Trigger mode. The single scan of all active channels will start on the HIGH to LOW transition of the EXT STRT L input at the P2 connector. The EXT STRT L signal should stay LOW for 250 nsec to ensure proper operation.

Single Scan Interval Timer 

Set-up timer register for TR0, write $A000 to CSR (relative address $0002). This enables the Interval Timer Trigger. The indicated CSR code also establishes the following conditions: • LED turned off • Data stored in offset binary format • Interval Timer configured as 16-bit counter • Data ready flag activated at end of data buffer Write $5840 to CCR (relative address $0004). This sets the scan mode to Single Scan. The indicated CCR code also establishes the following conditions: • Buffer size of 64 words • Block size of 64 channels • Interrupt on data ready flag if interrupt is enabled • Fixed gain x1 A single scan of all active channels will occur each time the Interval Timer’s time period expires.

Random Access 

The Random Access operating mode samples one user-selected channel. The channel selection is done by programming CCR bits 5-0 with the binary representation of the channel number. The digitized channel data is stored at location $0080. Random Access Software Trigger Write $8000 to CSR (relative address $0002). This enables the software trigger. The indicated CSR code also establishes the following conditions: • LED turned off • Data stored in offset binary format • Interval timer configured as 16-bit counter • Data ready flag activated at end of the data buffer

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