Fundamental Technologies

Voyager LECP Pages

LECP Rate Groups
Near Encounter Mode

GROUP 1 2 3 4
G1 Pa1 Pa2 Pa3 Eb4
G2 Eb1 Eb2 Eb3 Eg6
G3 Pd9 Pd10 Pd11 Ad3
G4 Eg7 Eg8 Eg9 Eb5
G5 PSA3 PSB3 PAB12 PAB13
G6 Pa4 Pa8 ESA0 ESB0
G7 PSA1 PSB1 PSA2 PSB2
G9 EAB10 Pa5 Pa6 Pa7
G15 Aa1 Aa2 Pa6 Pa7
G17 Ib Ia See note 1
G18 See note 2

NOTE 1: The Status words S3-S6 are subcommutated into words 3 and 4 by the 2 low order bits of the frame counter as follows:

(Frame Count) MOD 2 WORD 3 WORD 4
00 S5 S5
01 S1 S3
10 S6 S6
11 S2 S4

NOTE 2: Group 18 is derived by subcommutating the groups listed above into the Group 18 readout using the frame counter. The frame counter is incremented at the end of each Group 18 readout sequence. The readout sequence is as follows:

FRAME COUNTER
BITS 2-5 		RATE GROUP FRAME COUNTER
BITS 2-5		 RATE GROUP
0000 1 0101 6
0001 2 0110 7
0010 3 0111 15
0011 4 1000 9
0100 5    

Next: Data Block Contents for Near Encounter

Return to MRT main page.
Return to Voyager LECP Data Analysis Handbook Table of Contents.
Return to Fundamental Technologies Home Page.

Last modified 4/27/05, Tizby Hunt-Ward
tizby@ftecs.com
Original page by I. Robertson