CAEN V767 128 Channel Gen. Purpose MH TDC - Physics

02/07/2003 V767 User's Manual – Rev.4
- LSB = 1 ⇒ Auto Load Mode enabled (User Configuration loaded at Power-
ON/RESET).
4.4. CHANNEL ENABLE OPCODES
The following OPCODEs allow to enable or disable the individual TDC channels. These
OPCODEs can be changed during an acquisition, so the User must be aware that a
datum belonging to a previous enabling pattern may appear in the FIFO even if the
channel has been disabled.
4.4.1. ENABLE CHANNEL nn (CODE 20nn)
Allows to enable channel nn (nn can be any value between %00 and %7F,
corresponding respectively to channels 0 and 127).
4.4.2. DISABLE CHANNEL nn (CODE 21nn)
Allows to disable channel nn (nn can be any value between %00 and %7F,
corresponding respectively to channels 0 and 127).
4.4.3. READ STATUS CHANNEL nn (CODE 22nn)
Reads the Enabled/Disabled status of channel nn. After this OPCODE a word must be
read at the same location of the OPCODE itself. The microcontroller will remain in a wait
status until a 16-bit word is read out. The least significant bit of this word is related to the
Enable/Disable status of the channel according to the following:
- LSB = 0 ⇒ channel disabled;
- LSB = 1 ⇒ channel enabled.
4.4.4. ENABLE ALL CHANNELS (CODE 23xx)
Allows to enable all channels.
4.4.5. DISABLE ALL CHANNELS (CODE 24xx)
Allows to disable all channels.
NPO:
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