DB1065 Datasheet, PDF (17/23 Pages) CML Microcircuits – CTCSS Encoder / Decoder Development Kit

Nominal
Frequency (Hz)
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
•
159.8
162.2
167.9
173.8
179.9
•
183.5
186.2
•
189.9
192.8
•
196.6
•
199.5
203.5
•
206.5
210.7
218.1
225.7
•
229.1
233.6
241.8
250.3
•
254.1
Notone
Serial input mode
Tone
MX465
Frequency (Hz)
114.84
118.793
123.028
127.328
131.674
136.612
141.323
146.044
151.441
156.875
159.936
162.311
167.708
173.936
179.654
183.680
186.289
190.069
192.864
196.329
199.312
203.645
206.207
210.848
217.853
225.339
229.279
233.359
241.970
250.282
254.162
• Not specified in the TIA/EIA tone set
Table 4: CTCSS Tones
 f₀ (%)
0.035
-0.006
0.023
0.022
-0.095
0.082
0.016
-0.107
0.027
0.112
0.085
0.069
-0.114
0.078
-0.137
0.098
0.048
0.089
0.033
-0.138
-0.094
0.071
-0.142
0.070
-0.113
-0.160
0.078
-0.103
0.070
-0.007
0.024
N/A
N/A
Programming Inputs, Switch (Solder Jumper)
D5 D4 D3 D2 D1 D0 Hex
(E6) (E5) (E4) (E3) (E2) (E1)
0
0
1
0
1
1
0B
0
1
1
0
1
0
1A
0
0
1
0
1
0
0A
0
1
1
0
0
1
19
0
0
1
0
0
1
09
0
1
1
0
0
0
18
0
0
1
0
0
0
08
0
1
0
1
1
1
17
0
0
0
1
1
1
07
0
1
0
1
1
0
16
1
1
0
0
0
1
31
0
0
0
1
1
0
06
0
1
0
1
0
1
15
0
0
0
1
0
1
05
0
1
0
1
0
0
14
1
1
0
0
1
0
32
0
0
0
1
0
0
04
1
1
0
0
1
1
33
0
1
0
0
1
1
13
1
1
0
1
0
0
34
1
1
0
1
0
1
35
0
0
0
0
1
1
03
1
1
0
1
1
0
36
0
1
0
0
1
0
12
0
0
0
0
1
0
02
0
1
0
0
0
1
11
1
1
0
1
1
1
37
0
0
0
0
0
1
01
0
1
0
0
0
0
10
0
0
0
0
0
0
00
1
1
1
0
0
0
38
1
1
0
0
0
0
30
1
0
Data Clock X
X
2X
7. Troubleshooting
Ideally, this section would not be required...however, sometimes the least expected (OK, the
undesired) occurs. This section is intended to answer the most common questions and provide
some helpful troubleshooting suggestions.
7.1 Suggestions
 Use an oscilloscope
Because transmit and receive are biased a.c. signals, an oscilloscope is an invaluable
troubleshooting tool to probe and verify signal levels
 Check for loose connections or jumpers
20480150.001 MX-COM
1996
Page 17