Icom IC-905 Basic Manual page 88

13
CONNECTOR INFORMATION
Controller
D [AV-IN]
Connects to an external device, such as a camera, to
input audio and video.
3.5 mm (1/8 inch)
Video output
GND Audio output
Audio:
• Input impedance: 600Ω
• Input level: –10 dBV ±3 dB
Video:
• Input impedance: 75 Ω
D [AV-OUT]
Connects to an external device, such as a monitor, for
displaying the received audio and video.
3.5 mm (1/8 inch)
Video input
GND Audio input
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
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):
• Current flow:
The pin goes low when the transceiver transmits.
• Output voltage (TX): Less than 0.1 V
• Current flow:
3.5 mm (1/8 inch)
GND SEND (I/O)
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.
Example: [SEND/ALC] jack
Switching diode
SEND
GND
Power source for Relay
13-2
–0.5 to +0.8 V
Maximum 20 mA
Maximum 200 mA
To a non-Icom
linear amplifier
Relay