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SDI&HDMI 450m Wireless System
◆ WHDI 5.1-5.9GHz license-free wireless
◆ DFS Comply
◆ Uncompressed 3GSDI & HDMI transmission
◆ 450 meters (Line-of-Sight) distance
◆ Less than 1 millisecond latency
◆ 2-ch HDMI embedded audio transmission
◆ Timecode and trigger transmission
◆ OLED info and channel switching
◆ Instant Playback mode for Alexa Mini
◆ Chip Level Transmission Encryption
◆ Unique accurate color reproduction algorithm
◆ Support 3-4 pairs working in one location
◆ Multicast - 1 transmitter to Max 4 receivers
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WHDI Wireless Technology

SDI&HDMI 450 meters (LOS)

SW-M450 wireless system is based on WHDI wireless technology, 5.1-5.9GHz license free bands, DFS comply, , supports uncompressed 3G/HD-SDI and HDMI (Max 1080p60) to transmit 450 meters (Line-of-Sight) distance, and less than 1 millisecond latency. The system is pure hardware connection, plug and play, which is widely used in director monitoring, drone, ropeway camera, steadicam etc.

Input & Output

The Transmitter (Tx) has 2 omni antennas, supports
1x 3G/HD-SDI input
1x 3G/HD-SDI loop output
1x HDMI 1.3 input


The Receiver (Rx) has 5 omni antennas, supports
2x 3G/HD-SDI output
1x HDMI 1.3 output


SDI & HDMI formats:
1080p60, 1080p59.94, 1080p50
1080p23.98, 1080p24; 1080p25, 1080p29.97, 1080p30;
1080i60, 1080i59.94, 1080i50;
720p60, 720p59.94, 720p5

450meters Transmission

Non-compressed, ≤1ms latency

In Line-of-Sight, SW-M450 supports non-compressed 3G/HD-SDI and HDMI 450 meters (1500 feet) transmission, with less than 1 millisecond latency.
SW-M450 supports SDI & HDMI embedded audio (CH1&2) transmission, and supports SDI Timecode & Trigger transmission.

OLED Display & Channel Switch


DFS comply

Both Tx and Rx are equipped with OLED to display signal format, wireless channel number and signal strength.
On the Tx, push the joystick up/down to switch wireless channels from CH0 to CH10, and indicates the signal bars. When changing to a new channel, the paired Rx will follow the new channel automatically.
On the Rx, push the joystick right to enter wireless condition analysis, and after 10 seconds, the OLED will display the signal strength of all 11 wireless channels, and helps to select a best channel to work.
Support 3-4 pairs wireless channels to work together in one location.

* For DFS comply, use CH 0/1/2/3/9/10 only, or switch to AUTO mode



Chip Level Encryption

The Transmitter and Receiver need to pair and work encrypted. Supports Max 1 to 4 multicast. Any unpaired receivers can’t been connected with theTransmitter, in order to protect the camera footages.




Instant Playback Mode


Some of the cine cameras like Alexa Mini, Red Raven, when operate playback on the camera, the output SDI clock was interrupted and will break the wireless video transmission.
SW-M series provide the “Instant Playback” mode, to support the constant wireless video receiving.
On the Tx, push the joystick right to enter menu, and set “InsPB” to “ON”, to switch on the “Instant Playback” Mode.



Accurate Color Reproduction

Due to the wireless chip limitation, the normal wireless systems cannot truely reproduce colors.
SW-M series made particular algorithm modifications, to ensure a broadcast level accurate color reproduction.

Power Supply

Both Tx and Rx provide 7-34V 2-pin lockable DC input.
The Tx can be powered by DV batteries. The following DV plates are provided for selection:


Plate types
Compatible batteries
SONY NP-F970/770, SWIT S-8972, S-8970
SONY BP-U60/U30, SWIT S-8U65, S-8U95
Panasonic CGA-D54/D28, VW-VBD58,SWIT S-8D62, S-8D58, S-8D98
Canon LP-E6, SWIT S-8PE6

The Rx can be selected from V-mount (Default) and Gold mount battery plates.


SW-M450 standard package includes:

1x Transmitter
1x Receiver
1x Articulating arm trestle (Cold shoe and 1/4”)
1x D-tap to pole-tap DC cable
1x AC-DC power adaptor
1x Carrying case (for everything)


SW-M450 1T2R Kit includes:

1x Transmitter
2x Receiver
1x Articulating arm trestle (Cold shoe and 1/4”)
2x D-tap to pole-tap DC cable
2x AC-DC adaptor
1x Carrying case (for everything)

Pair the Transmitter and Receiver

The SW-M450 Tx and Rx are already paired in factory. You can directly use.
But if you have several units and mixed up the Tx and Rx, or if you need to do multi-cast, you need to re-pair by yourself. Pairing steps:
(1) Power on the Tx and connect SDI or HDMI source to Tx.
(2) Power on the Rx and connect with a monitor. The monitor will display “SEARCHING FOR CAMERA UNIT”(Pic 1)
(3) Press down and hold the Rx Joystick, till the Rx OLED displays “PAIR” (Pic 2). In the meantime, the monitor will display “PLEASE PRESS REGISTRATION BUTTON ON CAMERA UNIT” (Pic 3). Then release the Rx button.
(4) Press down and hold the Tx Joystick, till the Tx OLED displays “PAIR” (Pic 2). In the meantime, the monitor will display “REGISTRATION IN PROGRESS” (Pic 4), Then release the Tx button.
(5) When progress bar finished, the Tx and Rx are paired successfully, the system is working under encryption.

How to Get the Best Effect of Wireless Transmission

(1) Set the Transmitter and Receiver antennas straight up, even if they are laid down installed.
(2) Set the Receiver as high as possible.
(3) Avoid walls, trees, water and any blockage as best as you can.

Input3G/HD-SDI ×1/
Output3G/HD-SDI loop ×13G/HD-SDI ×2
Format1080P (60 / 59.94 / 50)The same as transmitter inputs
1080i (60 / 59.94 / 50)
1080p (30 / 29.97 / 25 / 24 / 23.98)
720p (60 / 59.94 / 50)
Wireless frequency5.1~5.9GHz
Radio modulesOFDM 16QAM
Transmission distance450 meters / 1500 feet (Line of sight)
Latency≤1 millisecond
Power consumption≤10W≤10W
Radio power100mW/
Input voltageDC 7~34VDC 7~34V
Working environmentTemperature: 0°C -+40°C
Dimension(w/o antenna) 66×106.5×24.7 (mm)102.8×138.5×20.8 (mm)
Net weight192.8g359.2g


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Fax: +86-25-85805796
Address: 10 HengTong Road, Xin’gang, Nanjing
Economic and Technological Development Zone
Nanjing, 210038, P. R. China.




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