13-2
BASIC MANUAL
13
CONNECTOR INFORMATION
D
[AV-IN]
Connects to an external device, such as a camera, to
input audio and video.
D
[AV-OUT]
Connects to an external device, such as a monitor, for
displaying the received audio and video.
D
[SEND]
An external unit controls the transceiver. When the
SEND pin goes to ground, the transceiver transmits.
•
Input voltage (RX): 2.0 to 20.0 V
•
Input voltage (TX): –0.5 to +0.8 V
•
Current flow:
Maximum 20 mA
The pin goes low when the transceiver transmits.
•
Output voltage (TX): Less than 0.1 V
•
Current flow:
Maximum 200 mA
When the SEND terminal controls an inductive load,
such as a relay, a counter-electromotive force can
malfunction or damage the transceiver. To prevent
this, we recommend adding a switching diode, such
as a 1SS133, on the load side of the circuit to absorb
the counter-electromotive force.
L
When the diode is added, a delay in relay switching
may occur. Be sure to check its switching action before
operating.
L
Be sure to connect the Negative terminal of the Power
source for Relay to the [SEND] jack’s GND terminal.
3.5 mm (1/8 inch)
SEND (I/O)
GND
SEND
GND
Power source for Relay
Relay
Switching diode
To a non-Icom
linear amplifier
Example: [SEND/ALC] jack
Controller
3.5 mm (1/8 inch)
Audio output
GND
Video output
Audio:
•
Input impedance: 600Ω
•
Input level:
–10 dBV ±3 dB
Video:
•
Input impedance: 75 Ω
Audio:
•
Output impedance: 600 Ω
•
Output level:
–10 dBV ±3 dB
Video:
•
Output impedance: 75 Ω
L
The audio and video are output only when in the ATV
mode.
L
You can change the audio signal output type and output
level.
»
SET > Connectors >
USB/AV-OUT AF/IF Output
L
You can change the video signal output level.
»
VIDEO > SET > Video Level >
AV-OUT Video Output Level
3.5 mm (1/8 inch)
Audio input
GND
Video input
Содержание IC-905
Страница 1: ...BASIC MANUAL ALL MODE TRANSCEIVER 905...
