NEMS NCD Event MuxScope Record
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Contact: N. West, Oxford.
Revision History:-
================
5.00 N. West First version
A. Hallin Add calibration constants.
A. Cox Changed PREAMPCHARGE -> PREAMPRCFACTOR. STARTPOS -> TIMEDELAY.
5.01 A. Cox Add SCOPEOFFSET
5.02 G. Prior Updated KNEMS_OS information
Description
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This bank contains the Mux - Oscilloscope data and waveform for one channel.
This bank comes from the NCD Multiplexer, Scope Time and Scope records.
This bank maps to QMuxScope.
Reference Links
---------------
None.
Structural Links
----------------
None.
Status Bits
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Note: Any status bit parameters are defined to work with bit functions such as
IAND and BTEST.
Data Words
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Data types: B(bit), I, F, D(double), H(hollerith 4 char)
+1 I KNEMS_STATUS 3-bit flag. Meaning if bit set:- See Note 1.
B0 Is associated with its parent NEMG Global Mux Record
B1 Contains data from the Multiplexer Record
=> words _MUX .. _BOX are defined.
B2 Contains data from the Scope/Scope Time records
=> words _CLK .. are defined
The following come from the Multiplexer Record
+2 I KNEMS_MUX_CHAN Channels that fired (12-bit hit register)
+3 I KNEMS_OS Oscilloscope Number
or = -1 if both scopes busy from previous events
+4 I KNEMS_MUX_BUS Mux Controller Board Bus number.
The following come from the NQxx banks.
+5 I KNEMS_MUX_BOX Mux Box number. or:-
-2 Undefined
-1 Multiply defined (hardware error?)
+6 I KNEMS_NCDSTRING NCD string number.
-2 Undefined
-1 Multiply defined
+7 I Spare.
+8 I Spare.
The following come from the Scope Time Record
+9 D KNEMS_CLK Clock in ticks (first word)
+10 Second word.
+11 I KNEMS_REG Latch register id (0-4).
The following come from the Scope Record
+12 I KNEMS_OS_LEN Length of waveform (in bytes)
+13 I KNEMS_OS_CHAN Oscilloscope channel.
The following come from the NCLA bank. See Note 2.
+14 F KNEMS_LOGAMPPARAM_A NCLA calibration constant.
+15 F KNEMS_LOGAMPPARAM_B " " "
+16 F KNEMS_LOGAMPPARAM_C " " "
+17 F KNEMS_LOGAMPPREAMPRCFACTOR " " "
+18 F KNEMS_LOGAMPTIMEDELAY " " "
+19 F KNEMS_SCOPEOFFSET " " "
+20 F Spare
+21 I KNEMS_WAVE Byte packed waveform (4 bytes per word).
...
Notes
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1). The EV bank contains 2 NEMG links:-
-29 -KEV_NEMG_PAR NEMG Partial - Not every supported NEMS has KNEMS_STATUS == 7
-28 -KEV_NEMG NEMG Complete - Every supported NEMS has KNEMS_STATUS == 7.
Normal NCD events will have one entry on -KEV_NEMG and nothing on -KEV_NEMS_PAR.
In abnormal conditions (i.e. un-matched Mux or Scope records) will there be banks on
entry -KEV_NEMG_PAR but in this case -KEV_NEMG will be empty i.e only if everything
looks good will there be data on -KEV_NEMG.
2) The Calibration constants are obtained from the NCLA bank.
This is a "logical" calibration - we get the calibration constants and store them
with the data. We would make calibrated waveforms, but save space by storing the
constants that can derive them from the packed waveform.