Low-Pass Filter-Control-Bit Patterns; High-Pass Filter-Control-Bit Patterns; Modulation-Select-Control-Bit Patterns - Motorola R-20010 Maintenance Manual

Table 10-1. Functions of Digital Control Bits
B it No. Na me Function
(I
IF CNT E N Logic 0 enables IF frequency to
IF/ BFO Output
I WH DET EN Lol{ic 0 enables the Wide band
Detector
2
NH FM <:AJN X JO
Lol{ic 0 increases Audio Gain 20 dB
:t
S I'AHE
--
4 S I'AJH:
-
;,
S I'KH E N I ,ogic 0
enable~
the S peaker Audio
- -
6
HIT 1:! Soft Inverter
i llEMO il JNV Lol{ic l inverts the Receive Signal
-I+
I! WH/ NH
Logic I selects the Wide IF
Bandwidth
!J
LI'FL :!!Kl Logic 0 selects the :JOO-Hz LPFL
Ill I.J>FI. :tK Logic 0 selects the 3- kHz LPFL
II
HI'FL :!-kH z Logic 0 select the :J-kHz HPFL
12 H PFL :!1111-Hz and Logic 0 selects the :300-Hz HPFL
HI'FEN and Enables HPFL
1:! AM E N Lol{ic 0 enables the AM Output
14
F M EN Logic 0 enables the FM Output
L' " >
SSH EN Logic 0 ena bles the SSB Output
Table 10-2. Low-Pass Filter- Control-Bit Patterns
Bit Patterns
~' ll ll<'li(Hl
9
10
:!I KI-Hz LPF 0 I
:t-kHz LI'F
1 0
20 -Hz J.P F'
I I
L _ . _
Table 10-:1. High-Pass Filter- Control-Bit Patterns
Hit P atterns
Futwtion
f)
II 12
:i -H,. H l'F
(I I I
:UKI- Hz HI'F
1 I
0
:1- k Hz HI'F
I
()
0
T able l 0-4. Modulation-Select-Control-Bit
Patterns
Bit Patterns
Fond ion 0
I 2 8 I:J
14
15
AMWH
(I
J J
I 0 I I
AM NH
() I 1 \) 0 I I
SSHWH
I J I I I
0
SSHNB
I I I 0 I I 0
Fl\1 \\"B
(I I
1 1
I
0
I
Fl\1 NB ()
J () () J 0 I
\\"H DET E N
J ()
X X
I
I
I
1 0-5 /( 1 0-6 blank)