249
Appendix B – Tone and Code Specifications
Table B-1
Standard DTMF Tones
TONE GROUP STANDARD DTMF (Hz)
LOW
LOW
LOW
LOW
HIGH
HIGH
HIGH
HIGH
697
770
852
941
1209
1336
1477
1633
Table B-2
DTMF Frequency Coding*
KEY
LOW GROUP TONE
(Hz)
HIGH GROUP TONE
(Hz)
697
770
852
941
1209
1336
1447
1633
1
2
3
A
4
5
6
B
7
8
9
C
*
O
#
D
*The analyzer has provisions for encoding and decoding 16 different keys. Each key is assigned two frequencies: one
from a low tone group and one from a high tone group. Four tones are available from each group, with 16 different
combinations of low and high group tones. This table shows the tone assignments of each key.
Содержание R8100 SERIES
Страница 19: ...19 Figure 2 1 2 Left and Right Sides of the R8100...
Страница 164: ...164 Figure 2 2 7 7 5 Power Profile Frame with Markers...
Страница 224: ...224 Figure 3 2 9 6 1 Submenu after pressing Options soft key in the Settings menu...
Страница 243: ...243 PTC Test in Monitor Mode Eye Diagram Display...
Страница 244: ...244 Power Profile Display Linear and Circular Constellation Displays...
Страница 245: ...245 Symbol Distribution Plot...