I Time-Out Timer; I Ptt Lock; I [Mic/Sp] Jacks - Icom IC-E91 Instruction Manual

I Time-out timer

To prevent accidental prolonged transmission, etc., the trans-
ceiver has a time-out timer. This timer cuts a transmission
OFF after 1, 3, 5 or 10 min. of continuous transmission. This
timer can be cancelled (default).
Approx. 10 sec. before the time-out timer is activated, the
transceiver emits a beep tone as a warning.
This can be selected with "TOT" in set mode.
➪
MENU screen SET MODE
(Push [MENU/LOCK]) (Rotate [DIAL]

I PTT lock

To prevent accidental transmission, etc., the transceiver has a
PTT lock function.
This can be selected with "PTT LOCK" in set mode.
➪
MENU screen SET MODE
(Push [MENU/LOCK]) (Rotate [DIAL]
(p. 90)
➪
TOT
† †
, then push [ï](5) .)
(p. 90)
➪
PTT LOCK
† †
, then push [ï](5) .)
OTHER FUNCTIONS

I [MIC/SP] jacks

To connect external equipment such as speaker, microphone,
TNC, etc. refer to the diagram below.
the [SP] jack
SP (AF OUT)
INTERNAL SP
CLONE
SP GND
the [MIC] jack
MIC
3.0 V
330 Ω
MIC GND
3.3 V (See below)
The center terminal of [MIC] outputs 3.3 V DC via 330 Ω
resistor.
[DIAL] ↔ [∫ ∫ ](2)/[√ √ ](8)
†
12
External
speaker
SP
3.5 (d) mm
plug
SP
GND
Impedance 8 Ω
External
2.5 (d) mm
microphone
plug
MIC
33 kΩ
MIC
GND
PTT
Impedance 2 kΩ
[ï](5) ↔ [≈ ≈ ](6)
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