Comtech EF Data SDM-309B - Manual (Page 157)

Maintenance SDM-309B Satellite Modem
6-6–12 MN/U-SDM309B Rev. #
6.1.4.5 Viterbi Decoder/Demod Card AS/2133 (Figure 6-9)
TP2 GND
Ground Test Point.
TP3 VIT LOCK
Viterbi lock Result of the decoder and clock synchronization and AGC leveling.
TP4 DATA CLK
Data Clock. Result of the data clock recovery loop in the demod processor Section.
TP8 SYM CLK
Symbol Clock. Result of the symbol clock recovery loop in the demod processor
Section.
Figure 6-9