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4
OPERATION
When the PTT input is taken to ground, the TRE-2 generates a high level 2175 Hz guard tone for 120 msec at a
relative level of +10 dB, followed by 40 msec of the selected function tone at a relative level of 0 dB followed by a
continuous low level guard tone at –20 dB relative level.
Selecting the Function Tone:
When the violet wire is high or floating, F1 is selected. When the violet wire is
taken to ground F2 is selected. For selecting the function tone via the optional keypad, leave the violet wire high
or floating. Press the keypad digit corresponding to the desired function tone in the list below. After the desired
function tone is selected, grounding the PTT input will cause the high-level guard tone, followed by the selected
function tone and then by the continuous low-level guard tone. If the unit is powered down and then powered back
up the default frequencies will be restored.
Tone
Frequency
Keypad Digit
Tone Duration
Relative Level
Guard
2175 Hz
120 msec
+10 dB
Monitor
2050 Hz
40 msec
0 db
F1
1950 Hz
1
40 msec
0 db
F2
1850 Hz
2
40 msec
0 db
F3
1750 Hz
3
40 msec
0 db
F4
1650 Hz
4
40 msec
0 db
F5
1550 Hz
5
40 msec
0 db
F6
1450 Hz
6
40 msec
0 db
F7
1350 Hz
7
40 msec
0 db
F8
1250 Hz
8
40 msec
0 db
F9
1150 Hz
9
40 msec
0 db
F10
1050 Hz
0
40 msec
0 db
F11
950 Hz
*
40 msec
0 db
F12
750 Hz
#
40 msec
0 db
TECHNICAL NOTES
MIDIAN CONTACT INFORMATION
MIDIAN ELECTRONICS, INC.
2302 East 22
nd
Street
Tucson, Arizona 85713 USA
Toll-Free:
1-800-MIDIANS
Main:
520-884-7981
E-mail:
HU
U
Web:
HU
www.midians.com
U
Содержание TRE-2
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