TORUS1:[GLL_RAW.INFO]UVS_PHASE2_PB_HDR.DOC
				JUNE 4, 1996 - JEREMY GEBBEN

UVS Phase 2 playback File headers:

      The following list documents the contents of the header
information located at the beginning of the UVS data records.
All values and reference locations are two byte integers
unless otherwise specified.
      These values are valid for all data taken during jupiter ops.
The definitions for several header values have changed. Instead of
being extracted data out of the LRS stream, our data is grouped into
'segments' of up to 16 packets(84-420 bytes of data). Consequently,
many of the less important header values were changed to give more
information on this process. These values are marked with a # in 
the list below.   		
			Revision date: 31-MAY-1996 JJG
						       

Index Values in 
IDL
00               ERT Year (last 2 digits only)
01                   Day of Year
02                   Hour
03                   Minute
04                   Second
05                   MSecond
34               SCE Year                           !Added Feb 13
06                   Day of Year
07                   Hour
08                   Minute
09                   Second
10                   MSecond
11#              Rice compression flags (1 = data was rice-compressed for downlink,
                                         0 = data was downlinked raw, there is 1
                                         flag for each packet that went into the pb
                                         segment(16 max). the first packet is in the 
                                         top bit)
               Spacecraft Clock 
12                   RIM top byte   (Construct RIM with [top*256.]+bottom)
13                   RIM Least significant two bytes (bottom) 
14                   MOD 91
15                   MOD 10
16                   MOD 8  (=RTI)
17               SCLK Flags
18-28         Data Presence Indicators (0=OK,1=absent,one flag/minor frame)
29               Top 3 bits are final DPIs; bottom (LSB) bit is P/B flag
30#              merge flag 1=record was merged from 2 playback segments 
                            0=record was not merged
31               Source indicator (-2=no data (lasp), -1=no data,partial (EDR), 
                                    1=certified, 2=manipulated at LASP)
32               Software version number (integer*1000=j.iii) 
                    (will be greater than 10,000 for phase 2 data files)
33               UVS only: scan direction (0=up,1=down grating)
34               SCE Yr (see above)
35               Number of -1's in scan		|| Not in EUV
36               Number of 0's in scan		|| Not in EUV
37#              spare
38#              # of packets in the playback segment that this data is from
39               UVS: Scan number within RIM (range:1-14); EUV:=0

40-46       7 Sync words = 255
47             Starting Wavelength
48             UVS status byte # 1
49             UVS status byte # 2
50             Low Voltage (+10V)
51             Low Voltage ( +5V)
52             High Voltage F-Channel
53             High Voltage N-Channel
54             High Voltage G-Channel
55             Logic Temperature
56             Detector Temperature
57             Limb Sensor 

58-585    data
		   Max value is F-Channel:  15-bit word decompressed

586-599#   spare(was aacs data)

End