A-6 C/A CODER 100-101117
N L J E D C B A
G R R T T T T T
r e e P P P P P
n d d
The C/A code is made up of the combination of two 1023 bit inear patterns G1 and G2i. G2i is formed by delaying the G2 sequence by an integer number of chips between 5 and 950.The sequence definations are:
G1 = 1 + X3 + X10
G2 = 1 + X2 + X3 + X6 + X8 + X9 + X10I would expect to find logic that implements the algorighim shown in ICD-GPS-200 Fig. 3-11 C/A-Code Genertion on this board and the long variable delay line on the A7 Delay Line board.
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Beckman 899-1-R270 | M SN74LS86N | TI SN 74128N | AM25LS07PC |
TI SN74LS321 | 93S48PC | AM25LS194APC | DM74LS37N |
SN74LS123N | SN74LS133N | AM25LS194APC | 076-200058 - PROM? |
header rcrc---- | Beckman 899-1-R1k | AM25LS194ADC | AM25LS163PC |
blank | 076-200059 - 93427pc PROM? | AM25LS194APC | AM25LS163PC |
AM25LS378PC | 076-200056 - 93427pc PROM? | AM25LS194APC | AM25LS163PC |