Caen N957, Technical Information Manual

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Document type: Title: Revision date: Revision:
User's Manual (MUT) Mod. N957 8k Multi-Channel Analyzer 28/05/2012 6
NPO: Filename: Number of pages: Page:
00105/04:N957x.MUTx/06 N957_REV6 35 21
3.2 Status register (0x00, r)
Bit Name Function
3 FLASH BUSY FLAG 0 = Flash ready 1 = Flash busy
2 MEMORY FULL 0 = Data Memory is not full
1 = Data Memory has been filled
(can be reset via SWR_RESET or FLAG CLEAR bit of CONTROL
REGISTER)
1 MEMORY EMPTY 0 = Data Memory is not Empty 1 = Data Memory is Empty
0 USB TYPE 0 = Full Speed (USB 1.1) 1 = High Speed (USB 2.0)
3.3 Control register (0x01, r/w)
Bit Name Function Default
Value
15 OUTP LEMO LOGIC
LEVEL sets the OUTP logic level when OUTP MODE is "PROGRAMMABLE LEVEL" 0
13,14 OUTP LEMO MODE
CONFIG selects the signal to present on OUTP front panel connector
00 = MEMORY FULL (active high); default
01 = PEAK DETECT (active high when stretcher detects one peak)
10 = PROGRAMMABLE LEVEL (Logic level set by OUTP LEMO LOGIC
LEVEL bit)
11 = PULSE MODE (Programmable width active high pulse when PULSER
register is written) 00
12 SLIDING SCALE
MODE SELECT
selects sliding scale type:
0 = Random mode (default) 1 = RAMP mode 0
11 DAC TEST MODE
ENABLE 0 = DAC test mode disabled
1 = DAC test mode enabled. Sliding scale disabled and and the sliding scale
DAC is set with the DAC register value (see 0) – only for test purpose 0
10 RESERVED -
9 ACQUISITION
MODE
0 = External Gate mode 1 = Auto Gate mode (on discriminator threshold) 1
8 PUR INPUT
ENABLE
0 = PUR input sensing disabled 1:= PUR input sensing enabled 1
7 SOFTWARE
CONVERSION
MODE ENABLE
0 = Software conversion mode disabled
1 = Software conversion mode enabled (the control FPGA auto generates
conversion requests at a fixed periodic rate – only for test purpose) 0
6 CONVERSION
ENABLE
enables ADC data storage into memory buffer for readout
0 = ADC data storage disabled 1 = ADC data storage enabled 0
5 FLAG CLEAR 0= Rearms Memory Full Flag 1= Forces Memory Full Flag Clear (see § 3.2) 0
4 SLIDING SCALE
ENABLE
0 = Sliding Scale disabled 1 = Sliding Scale enabled 1
3..1 ADC SWR RATE Selects ADC Conversion Rate when ADC Software Conversion is enabled
0 = 600 S/s
1 = 70 KS/s 2 = 140 KS/s 3 = 250 KS/s
4 = 420 KS/s 5 = 635 KS/s 6 = 850 KS/s 7 = 1 MS/s
7
0 Timers/scaler enable
FLAG
0 = Scaler/Timers disabled 1 = Scaler/Timers enabled 0