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SIS Documentation
SIS3820
VME Scaler
Page 74 of 79
16.3 Connector Types
Find below a list of connector types that are used on the SIS3820.
Connector
Purpose
Part Number
160 pin zabcd VME P1/P2
Harting 02 01 160 2101
20 pin header Control (flat cable versions)
DIN41651 20 Pin (AMP e.g.)
34 pin header Inputs (flat cable versions)
DIN41651 34 Pin (AMP e.g.)
LEMO
Control and Input (LEMO versions) LEMO ERN.00.250.CTL
SDRAM
SDRAM memory socket
Berg 88638-60002
16.4 Power consumption
The SIS3820 is a 5 V supply board. Lower positive voltages (3.3 V and 2.5 V) are
generated with low dropout regulators. –5 V is generated with up to 3 DC/DC converters.
Board type
Voltage
Current
SIS3820-SCALER (32 ECL channels) 5 V
2,0 A
SIS3820-SCALER (32 TTL channels
5 V
1,3 A
SIS3820-CLOCK (32 NIM channels)
5 V
3,2 A
16.5 Operating conditions
16.5.1 Cooling
Although the SIS3820 is mainly a 2.5 and 3.3 V low power design, forced air flow is required
for the operation of the board. The board may be operated in a non condensing environment at
ambient temperatures between 10
°
and 40
°
Celsius.
16.5.2 Hot swap/live insertion
Please note, that the VME standard does not support hot swap by default. The SIS3820 is
configured for hot swap in conjunction with a VME64x backplane. In non VME64x
backplane environments the crate has to be powered down for module insertion and removal.
16.6 LED (selftest)
During power up self test and FPGA configuration all LEDs except the Ready (R) LED are
on. After the initialization phase is completed, all LEDs except the Ready (R) LED and the
Power (P) have to go off. Differing behavior indicates either a problem with the download of
the firmware boot file or one or more FPGAs and/or the download logic.