Media: fiber optic, GLINK
Record Length: fixed

	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	VRB START				Header Length								#Dwords MSb				#LVDS Links
2					Header Format			Object Format					#Dwords LSb
3					Tick								Data Type
4					Turn
5					0x00								Firmware Version
6					0x0000
:					Input Link Data Block (84 frames)
91					Data Type								Tick
92					Vertical Parity
93					0x0000
94					0x0000
95					0x0000
96	VRB END				0x0000

Field Definitions

note: empty cells will contain zeros
VRB START     = "0101"
Header Length = 0x03
#Dwords MSb   = number of data words (upper nibble) = 0
#LVDS Links   = 6
Header Format = Header Format, "010"
Object Format = Object format, "00001"
#Dwords LSb   = number of data words (lower byte) = 84 = 0x54
Tick          = The accelerator bunch crossing number, range 1-159
Data Type     = 0x0C
Turn          = The accelerator turn (revolution) number, range 0 to 65535

The Input Link Data Block contains six input records  
as follows: 

  "00000000000"+link0 frame1 bits[20:16]
  link0 frame1 bits[15:0]
  "00000000000"+link0 frame2 bits[20:16]
  link0 frame2 bits[15:0]
  ... 
  "00000000000"+link5 frame7 bits[20:16]
  link5 frame7 bits[15:0]

Vertical Parity = vertical parity
VRB END      = "1010"

Revision History

03 Nov 2005: created JTO
04 Jan 2006: added parity links
01 Jun 2006: updated for firmware versions >= 63.  Note this is now using the standard L3 sender package.
             Which has a real parity value, empty padding values, version number encoded in header 5.
             Tick numbers now count from 1-159, not 0-158.