LGD Hardware Map Layout

Introduction

The LGD hardware configuration is in a map manager database file, located in $E852_CONFIG/maps/LGD.map. This map contains the hardware layout of the LGD, the setpoints, and some ADC settings. All entries are done by UNIX time. Note that there are some subsystems and items that are not used.

The Layout

• Subsystem : Hardware
• Item : channel(int[3053]) This is the channel number of the entry. In practice, it is just equal to the array index.
• Item : row (int[3053])
• Item : col (int[3053])
• Item : ADCCrate (int[3053])
• Item : ADCSlot (int[3053])
• Item : ADCChannel (int[3053])
• Item : baseBarcode (int[3053])
• Item : baseAddress (int[3053])
• Item : baseGroup (int[3053])
• Item : tube (int[3053]) The barcode of the tube.
• Item : cable (int[3053])
• Item : bundle (int[3053]) The bundle the given cable is in.
• Item : code (int[3053]) The status code of the channel.
• Item : nspare (int[210]) The number of spare cables in the bundle given by the array index.
• Item : spares (int[210][4]) The spares (up to 4) of the bundle given by the first index.
• Subsystem : monitoringHW
• Item : nChannels (int[1]) The number of normalization channels (currently 4). Only array indices 0..nChannels are used in this subsystem.
• Item : ADCCrate (int[10])
• Item : ADCSlot (int[10])
• Item : ADCChannel (int[10])
• Item : channel (int[10]) This the normalization system channel number (currently 0-4).
• Item : cable (int[10])
• Item : bundle (int[10])
• Item : type (int[10]) The type of detector (1 = 8575 PMT, 2 = Photodiode).
• Item : voltage (int[10]) Not used.
• Subsystem : parameter
• Item : lowerDisc (int[96]) The lower discriminator thresholds for the ADC's
• Item : pedtrim (int[3062]) Pedestal trim values used with `DAQ' gate.
• Item : testPedTrim (int[3062]) Pedestal trim values used with `local' gate.
• Item : setpoint (int[3053]) The HV system voltage setpoints
• Item : upperDisc (int[96]) Not used. Upper discriminator settings are handled by the trigger loading program.
• Subsystem : stataus
• Item : controller (int[1]) The controller enable status.
• Item : splitter (int[16]) The splitter enable status (Uses only indices 1..15).
• Item : voltage (int[3052]) The last voltages sent to the bases.
• Subsystem : geometry This is no longer used - see lgdGeom.map instead.

** 1/12/95 R.L.