SU703
Contents
Description
4 channel fast discriminator with (dual PECL comparator) and MAX537 (4x serial DAC). This module has 5 lemo connectors
This module has 4 comparators (MAX9601), the threshold and hysteresis can be set through a register (used DAC MAX537). The channel 1 is an exception, an external threshold can be set using the lemo connector TH1, to do this you have to use solder two jumpers in the pcb. The threshold can be set in a range of +-5V.
If you do not want to use all comparators, the lemo connectors can be used as standard LVTTL input/output DIO1..DIO4. You can use maximal 4 DIO, the channel AI4 is always a comparator input. Each DIO has a 50 Ohm resistor at the input, if you want to use the DIO as input you can solder this resistor to avoid reflections.
Note: The version 0 is a prototype and it is not working
Block Diagram
Front panel
Back Connector
SU703 pin table (direction shown for the SU board!)
power in +5V 2 1 +5V in power
LVDS_n out D_IN_n<1> 4 3 D_IN_p<1> out LVDS_p
LVDS_n out D_IN_n<2> 6 5 D_IN_p<2> out LVDS_p
LVDS_n out D_IN_n<3> 8 7 D_IN_p<3> out LVDS_p
LVDS_n out D_IN_n<4> 10 9 D_IN_p<4> out LVDS_p
LVTTL in SCLK_DAC 12 11 SDI_DAC in LVTTL
LVTTL in CS_TH_n 14 13 LDAC_n in LVTTL
LVTTL out DIN<1> 16 15 CS_HYS_n in LVTTL
LVTTL out DIN<3> 18 17 DIN<2> out LVTTL
LVTTL in DOE_n<4> 20 19 DOUT<4> in LVTTL
LVTTL in DOE_n<3> 22 21 DOUT<3> in LVTTL
LVTTL in DOE_n<2> 24 23 DOUT<2> in LVTTL
LVTTL in DOE_n<1> 26 25 DOUT<1> in LVTTL
LVTTL in LED_n<5> 28 27 LED_n<4> in LVTTL
LVTTL in LED_n<3> 30 29 LED_n<2> in LVTTL
LVTTL out DIN<4> 32 31 LED_n<1> in LVTTL
NC - - 34 33 - - NC
power in GND 36 35 GND in power
Power consumption
+5V -> XX mA -5V -> XX mA
Measurement
Compatibility
This module is compatible with all base boards
