TOF Electronics

Channel maps

Crate Channels Bars
b0wcal04 0-53 0-53 East
b0wcal05 54-107 54-107 East
b0wcal06 108-161 108-161 East
b0wcal07 162-215 162-215 East
b0wcal00 216-269 0-53 West
b0wcal01 270-323 54-107 West
b0wcal02 324-377 108-161 West
b0wcal03 378-431 162-215 West

Related material

Here is a list of related documentation for the TOF electronics:

How to check that the Xilinx has been downloaded

No interaction with the TOMAIN boards is possible until the Xilinx has been downloaded. Most of the commands described below will not fail but the results will not make much sense. Here is how to check whether the Xilinx has been downloaded. For example, to check b0wcal03, slot 5: 
$ kinit 
$ rsh b0dap30 -l cdf_tof
$ register b0wcal03 5 -set XBRD_DIAG 0xa5
[ 0] XBRD_DIAG <-- 0xa5
$ register b0wcal03 5 -get XBRD_DIAG 
[ 0] XBRD_DIAG = 0x5a
If the XBRD_DIAG register reads back the compliment of the value written then the Xilinx has been downloaded. If it reads out zero, or some value other than the compliment, then the Xilinx has probably not been downloaded since the crate was powered on. In this case, download the Xilinx by hand: 
$ download b0wcal03 5
After downloading the Xilinx from the on-board PROM, the download program checks the diagnostic register.

How to check TOMAIN board voltages/temperatures

Voltages and temperatures can be checked by reading various channels of the on-board ADC. For example, to check VCC5: 
$ readadc b0wcal03 5 -get VCC5
[ 6.4] VCC5 = 2484 unipolar internal clock
 VCC5 voltage =   4.972 V
Here is the list of ADC channels that can be monitored:
ADC Name Typical range Description
VCC5 +4.9...+5.1? Analog +5 volts
VEE5 -5.0...-5.2? Analog -5.2 volts
VCC15 +14.8...+15.2? Analog +15 volts
VEE15 -14.8...-15.2? Analog -15 volts
VTT -1.8...-2.2? ECL termination voltage (-2 volts)
TEMP_T 18...25 deg C? Top temperature sensor (typically warmer than bottom sensor)
TEMP_B 18...25 deg C? Bottom temperature sensor (typically colder than top sensor)

How to monitor clock signals

Clock signals present on the TOMAIN board can be monitored remotely at the BNC patch panel on the first floor. The even numbered channels on this patch panel connect to the clock monitor output of each TOMAIN board. Clock signals can be monitored at the patch pannel with an oscilloscope by attaching it to the appropriate BNC connector. The input termination of the scope must be set to 50 ohms.

Which clock signal is monitored is controled by setting the CLOCK_MON register on the tomain board. For example, to check the common stop signal on the TOMAIN board in slot 5 of b0wcal03, you would check the channel map to learn that it's clock monitor is connected to channel 84 at the patch panel. Then, to enable the common stop on this output, you issue the command: 

$ register b0wcal03 5 -set CLOCK_MON 0x04
Here is the list of clock signals that can be monitored and the values to be written to the CLOCK_MON register:
Signal Value Description
RESET 0x01 Reset signal received from LCF module
CAL 0x02 Calibration pulse from DDG, fanned out by CCFM/LCF module
STOP 0x04 Common stop, fanned out by CCFM/LCF module
OUT_CLOCK 0x18 ADMEM QIE output clock (only when ADMEM jumpered)
ADC_CLOCK 0x28 ADMEM ADC conversion clock (only when ADMEM jumpered)
QIE_CLOCK 0x48 ADMEM QIE cycle clock (only when ADMEM jumpered)
QIE_RESET 0x88 ADMEM QIE reset signal (only when ADMEM jumpered)
Please remember to turn off the clock monitoring after you are finished: 
$ register b0wcal03 5 -set CLOCK_MON 0

How to monitor PMT signals

PMT pulses can be monitored remotely at the BNC patch panel on the first floor. Each odd-numbered connector is attached to a TOMAIN board and any of the 9 channels on the board can be selected for monitoring. Multiple channels on the TOMAIN board can be monitored simultaneously in which case the signal seen on the oscilloscope is the sum of the individual PMT signals.

Monitoring of a given channel is enabled by setting the appropriate bit in the appropriate register.

To identify which TOMAIN board corresponds to which channel, which BNC connector at the patch panel corresponds to this TOMAIN board and what value nees to be written to the appropriate TOAD register, consult the channel map for the appropriate crate.

For example, to monitor the pulses on channel 87, you would consult the channel map for crate b0wcal05. Channel 87 is handled by the TOMAIN board in slot 8 of b0wcal05 which is connected to the BNC connector number 19. Channel 87 is the first channel on the third TOAD board and the command to turn on the monitoring is: 

$ register b0wcal05 8 -set TOAD2 0x02
The scope needs to be terminated into 50 ohms or else you will see a reflected pulse delayed by about 600 ns.

After you are finished monitoring pulses, please turn off the monitoring circuits: 

$ register b0wcal05 8 -set TOAD2 0

Inside an endwall crate...

The TOF DDG crate...

The TOF NIM bin...

The TOF patch panel...

LED's on the TOMAIN board...