SIS3820 (Multi Channel Scaler)

SIS3820 scaler, 64 MB SDRAM, 32 inputs, TTL (50 Ohm), 100 MHz max. count rate, 4 control outputs, 4 control inputs.

The figures 53.1 and 53.2 show the configuration of the board: A32D32 at 0x38000000, rotary switches 3800 (VME connectors point right), VME adr. space 16 MB, 8 MB page, J 1 1000, J90 0101, JP 570 up. A second SIS3820 card has the adress 0x39000000.

The INHIBIT signal (50 Ohm, TTL) is fed into input 3 (control line 3), see figure 53.3.

Power requirements: 5V.

A SIS3820 board is introduced to Online by:

define/dev=counter/mod=sis3820/base=0x38000000/vector=0/chan=0 c1 
....
define/dev=counter/mod=sis3820/base=0x38000000/vector=0/chan=31 c32

SIS3820/DGG2 test: Connect the 1 MHz clock output of a DGG2 ('CLK OUT') to input no. 1 of the SIS3820. Convert the NIM gate of the DGG2 to TTL and thereby invert the signal. Connect the NIM-TTL output with the control line 3 of the SIS3820.

If the board is used in a memory-mapped mode, using the mcs(), function, it has to be defined as a single device.

define/dev=mcs/mod=sis3820/base=0x38000000/vector=0/chan=0 mcs1

Tango (/online_dir/online.xml):

<hw>
... other devices
<device>
 <name>exp_c01</name>
 <type>counter</type>
 <module>sis3820</module>
 <device>p09/counter/exp.01</device>
 <control>tango</control>
 <hostname>haso107tk:10000</hostname>
</device>
<device>
 <name>exp_c02</name>
 <type>counter</type>
 <module>sis3820</module>
 <device>p09/counter/exp.02</device>
 <control>tango</control>
 <hostname>haso107tk:10000</hostname>
</device>
<device>
 <name>exp_c03</name>
 <type>counter</type>
 <module>sis3820</module>
 <device>p09/counter/exp.03</device>
 <control>tango</control>
 <hostname>haso107tk:10000</hostname>
</device>
</hw>

Figure 53.1: SIS3820, Total
Image SIS3820_total

Figure 53.2: SIS3820, Base Address
Image SIS3820_detail

Figure 53.3: SIS3820, Inhibit
Image SIS3820_inhibit