Инструкция по эксплуатации ESCORT GROUP Itc Escort T-6210
Страница 8
7
группа компаний Эскорт, тел./факс: (495) 937-5341, 674-2690
e-mail: [email protected], http://www.escortpro.ru
B. DTMF параметры нажатия клавиш
Item
Transmitter
Receiver
Standard Frequency
Low Freq. Group: 697, 770, 852, 941Hz High
Freq. Group: 1209, 1336, 1477, 1633Hz
Frequency Deflection
Less Than ±1.5%
Less than ±2.0% can receive
More than ±3.0% can not receive
Between ±2.0%~±3.0% can not
sure if you can receive
Voltage Level
Low Freq. Group: -9dBm±3dB
High Freq. Group: -7dBm±3dB
more than (2±1) dB
Single Freq. Receive Voltage
Range when double Freq.
working : -4dBm ~ -23dBm
-31dBm
Both Freq. Voltage Difference
：
≤6dB
Total Distortion
Less than 20dB
_
Signal Limit Time
>40ms/bit
(30~40)ms/bit
Signal Alternation Time
>40ms
(30~40)ms
С. Пользовательская сигнально-частотная комбинация
H1
H2
H3
H4
1209
1336
1477
1633
L1
697
1
2
3
13
L2
770
4
5
6
14
L3
852
7
8
9
15
L4
941
11 (*)
0
12 (#)
16
Low
Freq.Group
Data
High
Freq.Group