18 Scrambler
62
4
The following figures show the Scrambler board (Transcrypt SC20-460).
5
Adjust the Audio level of the Scrambler board by referring to the Installation Manual of the Scrambler board.
You must change C1 and R1 ~ R5 (mounted on the back of the board) before adjusting the Audio level.
(Refer to the SC20-460 Installation Manual.)
For RX
For TX
Change C1 to 1000 pF
Change R2 to 15 k
Ω
Change R1 to 39 k
Ω
Change R4 to 15 k
Ω
Change R3 to 330 k
Ω
6
You can change the Scrambler configuration using the TRANSCRYPT software and TR30-3060/3061. The
parameters change when adjusting TX, RX and De-Emphasis.
Miscellaneous Parameter #1 @ Bit Number 4 (TX De-Emphasis)
Set to default “0”.
Miscellaneous Parameter #1 @ Bit Number 3 (RX De-Emphasis)
Set to “1”.
Refer to the SC20-460 System Manual for details.