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MultiViewScope airview
Wiewless imageing Transmission AirView
Wireless transmission of images from a video laryngoscope or other equipment to a computer monitor via a receiver connected to the computer. Images can also be recorded to the computer hard disk.


Air View is a wireless imaging transmitter allowing images to be sent in real time, without delay (30 frames /second)*.
* Connected to a monitor. Time lags may result depending on performance of the computer CPU.

The transmitter is powered by a rechargeable lithium polymer battery. When fully charged, it can transmit continuously for about 1 hour. In addition to being able to send wireless images to an external monitor, the receiver can be connected to laptop via a USB cable and images can be recorded to the hard disk.

Wireless radio wave frequency is in the 2.4GHz spectrum.

AVS−1 Wireless Imaging Transmitter, Air View
AirViewTX Transmitter, AirViewRX Receiver, Receiver Antenna x 2, AC Adapter (5V) x 2, USB cable x 2, Transmitter mounting belt x 2 and software.

Wireless Specifications
Wireless Radio wave Frequency
2.4 GHz range (2400 − 2483.5 MHz)
  Frequency Bandwidth   26 MHz
  Number of Channels   3
  Output   10 mW
  Antenna   Transmitter: Sleeve Antenna (internal)
Receiver: Sleeve Antenna (diversity) Gain 2.14 dBi
  Channel Frequency   Channel frequency (center frequency by channel.
CH No. (Frequency)
CH 1 (2414 MHz)
CH 2 (2442 MHz)
CH 3 (2470 MHz)
Receiver Specifications    
  Battery   Rechargeable lithium polymer battery (3.7 V, 450 mAh)
Number of recharges: 500+, At 500 charges and discharges, power level 88% (typ)
  Internal Battery
Functional Specification
Constant Current, Constant Voltage, Recahrge (320 mA, 4.2 V)
Battery Recharge: 1 hr. 30 min. (typ)
  Battery Safety Function   Recharging
 Excess Voltage, Overcharge Protection and Temperature Limit Detection
 Over Discharge Protection (Stand-by when battery voltage over 3.3 V, and shut down when under 3.1V, at 25C)
  Power Consumption   Transmission:
Shut Down:
300 mA (@ 3.7 V)
0.5 mA (@3.7 V)
5 μA
  Continuous Use   Approx. 1 hr. (typ. at full charge)
Video Input    
  Video Input (Mini Plug 3.5)   NTSC, composite signal
Video Signal Detection Function    
  When switching from Stand-by mode to transmission mode, the video signal is detected and video transmission begins. When the video signal is interrupted, it returns to stand-by mode.
Battery Indicator    
  Battery charge is shown with an LED indictor.
  Battery Charge   Green Light: over 40%
Green Flashing: 20-40%
Red Light: under 20%
Red Flashing: Video transmission stops
Note: When the battery is low, the red light will remain on for about 20 minutes and then go out.
  Charging Battery   Charging: Red Light
Fully Charged: Green Light
  Switch   Power On/Off switch (Note 1)
(Slide Switch)
Channel Switch
(Slide Switch)
  Video Input Terminal   3.5Ø Mini Plug (Monaural)
  Power Connector   Recharging (5V)
  Dimensions   65mm x 43mm x 20mm
  Weight   70 g
Receiver Specifications    
  Power Supply   USB or AC Adapter (5V)
When receiving power from the USB port on the computer, 2 USB cables are needed. One for capturing images, and one for power supply. When using the AC adapter, the USB cable for power supply is not required.
  USB Power Supply   5V
  AC Adapter   5V
  Operating Time   1 hour
Video Output    
  Output from RCA Terminal or USB
  Video Output (RCA Terminal)   1.0 Vp-p 75Ω
  Video Output (USB Cable)   Output is managed with included software. If video output to the computer is not desired, the USB cable for capturing images does not need to be connected.
  Switch   Channel Switch
(Slide Switch)
  Video Output Terminal   RCA Pin Jack
  Power Connector   Recharging (5V)
  USB Connector (2)   USB cable for image capture (USB 2.0)
USB cable for power supply
  Dimensions   130mm x 90mm x 40mm (not including antenna)
  Weight   250 g
  Sleeve Antenna for Receiver (2)
AC Adapter for Receiver
AC Adapter for recharging Transmitter
USB cable for image capture
USB cable for power supply
Transmitter mounting belt (2)
Operating Temperature    
  Operating Temperature Range   -10 − 40°C
  Temperature for Lithium Polymer Battery   0 − 35°C
Transmitter Power Management System    
  Battery Protection during Recharging
The lithium polymer battery has constant current and constant potential charge of 4.2 V, 0.7 C (320 mA typ) in order to prevent excess voltage or over charging. The lithium polymer battery has a temperature detection circuit to detect the upper temperature limits. When the upper temperature limits are detected, the battery is protected by recharge shut-off.
  Transmitter Power Switch
When in stand-by the electric current in the transmitter is approximately 0.5 mA. When not in use, turn the power switch to the OFF position. When in the OFF position, the only electric current from the lithium polymer batter is leakage current (less than 1µA).
  Transmitter Stand-by Switch (Video Input Stand-by)
With the switch ON and no video input signal to the video input adapter (3.5Ø Mini Plug), the transmitter will be in stand-by mode (waiting for video input). Power consumption in this mode is less than 0.5 mA. When a video signal is detected, video transmission will begin. When the video signal is interrupted, the transmitter will return to stand-by mode.
  Transmitter Battery Low Voltage Detection
During video transmission, if the battery voltage drops below 3.3V, transmission will be stopped until the battery is recharged.(The LED indictor is red. With transmission stopped, the red light will remain on for about 20 minutes and then go out.) If left in this state, when the battery drops below 3.15V, power to the image transmitter will be shut off (shut down mode) and the better protection function will active to prevent over discharge of the lithium polymer battery.


MultiViewScope airview
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