Vega DSP-223, Technical Manual

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12 Vega DSP-223
the CTCSS default box checked. Selecting F2 and then keying up on F1 will set the CTCSS tone to the
value in the F2 row. Selecting F4 would set the CTCSS tone in the F4 row. When PTT is pressed, F1 is
the default frequency and the F4 CTCSS tone is sent. Some consoles, such as the Vega C-1610 and
6124 have a paired mode that makes this operation very simple. The CTCSS tone lookup table appears
below.
Tone # Freq. (Hz) Tone # Freq. (Hz) Tone # Freq. (Hz) Tone # Freq. (Hz)
1
33.0
17
71.9
33
123.0
49
183.5
2
35.4
18
74.4
34
127.3
50
186.2
3
36.6
19
77.0
35
131.8
51
189.9
4
37.9
20
79.7
36
136.5
52
192.8
5
39.6
21
82.5
37
141.3
53
196.6
6
44.4
22
85.4
38
146.2
54
199.5
7
47.5
23
88.5
39
151.4
55
203.5
8
49.2
24
91.5
40
156.7
56
206.5
9
51.2
25
94.8
41
159.8
57
210.7
10
53.0
26
97.4
42
162.2
58
218.1
11
54.9
27
100.0
43
165.5
59
225.7
12
56.8
28
103.5
44
167.9
60
229.1
13
58.8
29
107.2
45
171.3
61
233.6
14
63.0
30
110.9
46
173.8
62
241.8
15
67.0
31
114.8
47
177.3
63
250.3
16
69.4
32
118.8
48
179.9
64
254.1
Figure 7 CTCSS Selection Chart
4.2.2.8 DIG4 Setup Button
This grouping allows the DSP-223 to mute the radio RX
input in the event of an active logic signal on Pin 10 (DIG4)
of the DB25 radio interface connector.
Enable Dig4 as
COR Input must be checked to enable the feature. Active
High sets the polarity of the active logic signal. If checked,
the radio RX will be muted when an active high is present
and not muted when low.
The subset feature to polarity is the R1 and R2 check boxes.
When one of these boxes is checked, that relay will close
with the active state setting. The relay will also close from
other programmed features. If RX Mute is in an active state
when changing the programming to OFF, power to the
DSP223 will have to be cycled to reset the RX audio path.
Figure 8 Digital 4 Setup Screen
The fourth checkbox will force the DSP223 to revert to F1 programming after the entered time expires if
no PTT or a COR logic changes occur.
NOTE: Digital output bits D4 or D5 are not active if DIG4 or DIG5 are enabled