Hybrid A.
1)
2)
Key for hang up.
3)
Key for waiting.
4)
Key for « On air ».
5)
Output signal vumeter display .
6)
Led on, when the audio limiter is enabled on “SEND”.
7)
“SEND” level control.
8)
“RETURN’’ signal level display.
9)
“RETURN” level control.
hybrid B.
10)
Same as A.
“Reset” function
11)
Reset button.
“Coupled” function
12)
Key coupling A and B hybrids :
r
Key down : “
ON
” is light , the two hybrids are coupled.
r
Key up: “
OFF
” is light, coupling is disabled.
Key allowing private call and conversation, using an external handset.
T
E
L
4
0
0
OFF
ON
COUPLED
RETURN
RETURN
SEND
SEND
PRIVATE
PRIVATE
HANG UP
HANG UP
STBY
STBY
ON AIR
ON AIR
+
-
+
-
+
-
+
-
INSERT A
INSERT B
+3
-3
-6
-12
-18
0dB
+3
-3
-6
-12
-18
0dB
+3
-3
-6
-12
-18
0dB
Peak
Peak
LEVEL
LEVEL
LEVEL
LEVEL
RST
+3
-3
-6
-12
-18
0dB
1
2
3
4
5
9
11 12
10
7
6
8
FRONT PANEL
TEL 400
17
Summary of Contents for TEL 400
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