VME hardware
VME crate structure
The VME hardware consists
of 2 VME crates that are connected using SBS Technologies Model 412-1 VMEbus
interconnects. These have the effect of
making the 2 VME crates appear as one to the Motorola MVME 243x processor. There is a 412-1 module in each VME crate.
These modules are identical but are configured as a Master and Slave by onboard
jumper settings. The modules are clearly labelled as Master (M) and Slave (S).
The Master module must occupy the same VME crate as the VME processor. The
Master module is configured to pass all VME accesses to A24/A32 addresses in
the range 0x0 => 0x02000000 (but not including 0x020000000) to the Slave VME
crate.
VME address assignments.
Silena S9418 ADC - These modules are labelled 0 => 15. Module 0 is assigned A32 address 0x02000000; module 1 is assigned A32 address 0x02010000 and module 15 is assigned address 0x020f0000 etc.
CAEN
V767 TDC - These modules are labelled 0 => 3. Module 0 is assigned A32
address 0x01800000; module 1 is assigned A32 address 0x01810000 and module 3 is
assigned address 0x01830000 etc.
CAEN
V560 scalers - These modules are labelled 0 and 1. Module 0
is assigned A32 address 0x01000000 and module 1 is assigned A32 address 0x01100000.
In
the normal (2 crate) configuration the MVME243x; SAC and Silena S9418 ADCs are
in the master crate and the CAEN V767 TDCs and the CAEN V560 Scalers are in the
slave crate.
The
MVME243x must be located in slot 1 of the Master Crate and the Slave SBS 412-1
must be located in slot 1 of the Slave Crate.
Apart from that the VME modules may be installed in any slot compatible
with their assigned VME address.
Module locations (July 2003)
Master Crate
Module type |
Module name |
slot |
VME address |
|
|
|
|
MVME243x |
|
1 |
|
412-1 Master |
|
2 |
|
SAC |
SAC |
4 |
0x0400 (A16) |
Silena 9418 |
s9418#16 |
5 |
0x020f0000 |
Silena 9418 |
s9418#15 |
6 |
0x020e0000 |
Silena 9418 |
s9418#14 |
7 |
0x020d0000 |
Silena 9418 |
s9418#13 |
8 |
0x020c0000 |
Silena 9418 |
s9418#12 |
9 |
0x020b0000 |
Silena 9418 |
s9418#11 |
10 |
0x020a0000 |
Silena 9418 |
s9418#10 |
11 |
0x02090000 |
Silena 9418 |
s9418#9 |
12 |
0x02080000 |
Silena 9418 |
s9418#8 |
13 |
0x02070000 |
Silena 9418 |
s9418#7 |
14 |
0x02060000 |
Silena 9418 |
s9418#6 |
15 |
0x02050000 |
Silena 9418 |
s9418#5 |
16 |
0x02040000 |
Silena 9418 |
s9418#4 |
17 |
0x02030000 |
Silena 9418 |
s9418#3 |
18 |
0x02020000 |
Silena 9418 |
s9418#2 |
19 |
0x02010000 |
Silena 9418 |
s9418#1 |
20 |
0x02000000 |
Slave Crate
Module type |
Module name |
slot |
VME address |
|
|
|
|
412-1 Slave |
|
1 |
|
CAEN V767 |
v767#1 |
4 |
0x01800000 |
CAEN V767 |
v767#2 |
5 |
0x01810000 |
CAEN V767 |
v767#3 |
6 |
0x01820000 |
CAEN V767 |
v767#4 |
7 |
0x01830000 |
CAEN V560 |
v560#1 |
11 |
0x01100000 |
CAEN V560 |
v560#2 |
12 |
0x01000000 |
There is a cable connecting the SAC to the Silena S9418 ADC command bus. One end of this cable MUST be connected to the SAC and the other end MUST be connected to a Silena S9418 ADC that has the terminator resistors installed. All other S9418 ADCs are connected to intermediate positions on the cable and MUST have the terminator resistors removed.
As of July 2003 the two crate system consisting of 16 S9418 ADCs and 4 CAEN V767 TDCs gives 512 channels of energy + time.
If needed it is possible to reduce the system to 384 channels of energy + time in which case only 1 VME crate is required.
Rather than steps 6 and 7 you can select a file (in the Saving and Restoring VME Module Setups window) containing the parameter settings for the 384 channel configuration and click on the button Restore.
In order to revert to the 512 channel (2 crate) system.