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MVD MCM output packet format
The MVD's MCM send out packets of 11 bit words, where the highest bit is the parity bit. The packets contain either 262 (correlator on) or 518 (correlator off) words, of which either 256 or 512 are ACC values.
| Data word(s) correlated mode | Data word(s) raw mode | contents | expected range of hex values (not counting parity bit) 1
| 1
| Event counter (upper byte)
| 0 -- 3F
| 2
| 2
| Event counter (lower byte)
| 0 -- 3FF
| 3
| 3
| beam counter
| 0 -- FF
| 4
| 4
| AMU cell pre
| 0 -- 3F
| 5
| 5
| AMU cell post
| 0 -- 3F
| 6-261 (post-pre)
| 6-261 (pre data) | 262-517 (post data) Data
| 0 -- 3FF
| 262
| 518
| vertical parity
| 0 -- 3FF
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