Mars 300 - Hi-Fi System Hollyland - Free user manual and instructions

Product Type	Wireless HD Video Transmission System
Brand	Hollyland
Model	Mars 300
Dimensions (Transmitter/Receiver)	105 x 62 x 22 mm (without antennas and battery plate)
Weight (Transmitter/Receiver)	145 g each
Power Input Voltage	6-16V DC
Power Consumption (Transmitter)	<6W
Power Consumption (Receiver)	<5W
Video Input Formats	HDMI: 480P60, 576P50, 720P50/60, 1080i50/60, 1080P30/50/60
Video Output Formats	HDMI: 480P60, 576P50, 720P50/60, 1080i50/60, 1080P30/50/60
Transmission Range (Line of Sight)	Over 650 ft (198 m)
Latency	<0.1s
Frequency Band	5 GHz
Modulation	OFDM
Bandwidth	20/40 MHz
Transmitter Interfaces	HDMI Input, HDMI Loop Out, 2x RP-SMA Antenna, DC Input, Micro USB
Receiver Interfaces	HDMI Output 1 & 2, 2x RP-SMA Antenna, DC Input, Micro USB
Pairing Method	Press and hold pairing button on both units
OSD Function	Press and hold Receiver Channel/OSD button to display wireless parameters
Housing Material	Industrial metal casing
Mounting	1/4-20 threaded hole, cold shoe, expansion accessory
Included Accessories	Transmitter, Receiver, 5x 5GHz Antennas, User Manual, Cold Shoe, Expansion Accessory, DC Adapter, OTG Converter
Repair and Maintenance	Keep antennas securely connected; avoid exposure to moisture; ensure adequate ventilation.

Frequently Asked Questions - Mars 300 Hollyland

How do I pair the transmitter and receiver?

Press and hold the pairing button on both the transmitter and receiver simultaneously until the Link light flashes red rapidly. Once paired successfully, the Link light turns steady green.

What is the maximum transmission range?

The maximum transmission range is over 650 feet (198 meters) in line-of-sight conditions with no obstacles.

What video formats are supported?

The system supports HDMI input and output formats including 480P60, 576P50, 720P50/60, 1080i50/60, and 1080P30/50/60.

How can I check the wireless signal strength?

Observe the Link indicator: steady green indicates strong signal, slow yellow flash indicates weak signal. You can also press and hold the Receiver OSD button to display wireless parameters on-screen.

Can I use batteries to power the units?

Yes, both the transmitter and receiver have a battery plate and can be powered by compatible batteries. Ensure the voltage is within 6-16V DC.

What should I do if there is no video output on the display?

Check power to both units, ensure antennas are securely attached, confirm the transmitter's Video light is on (indicating video input), and verify the camera outputs a compatible video format.

How do I change the wireless frequency?

Double-click the Channel/FM button on either the transmitter or receiver to switch the frequency value.

What is the latency of the transmission?

The transmission latency is less than 0.1 seconds, making it suitable for real-time applications.

Can the receiver output to two displays simultaneously?

Yes, the receiver has two HDMI outputs (HDMI Output 1 and HDMI Output 2) that can be used to connect two separate monitors simultaneously.

How can I update the firmware?

The system supports USB interface software upgrade. Connect the unit to a computer via the Micro USB port and follow the manufacturer's firmware update instructions.

USER MANUAL Mars 300 Hollyland

Thank you for purchasing the MARS 300 Wireless HD Video Transmission System. This product uses the latest image coding and decoding technology and 5G wireless transmission technology to achieve ultra-low latency video transmission. The transmission distance is greater than 650ft in the line-of-sight environment, and the maximum resolution is 1080P60Hz, enabling full HD HDMI video transmission.

Features

• Latest image coding and decoding technology, 5G wireless transmission technology, Ultra-low latency video transmission
  ● Transmission Range 650ft
  • HDMI IN/HDMI LOOP OUT、Dual HDMI OUT
  ● Both the transmitter and the receiver can mount the battery
• 6\~16V DC Wide Voltage Input
  ● Support USB Interface Software Upgrade
• Industrial Metal Casing, Stable and Reliable

Application

• Filmmaking
  • Live Broadcast
• Sports Activities
  • Educational Recording
• Wedding Ceremonies
  • Corporate Events

Packing List

①

②

③

④

⑤

⑥

⑦

⑧

1. Receiver x1
2. Transmitter x1
3. 5GHz Antenna x5
4. User Manual x1
5. Cold Shoe x1
6. Expansion Accessory x1
7. DC Adapter x1
8. OTG converter x1

Typical Connection Diagram

The wireless HD video transmission system adopts the latest wireless communication technology and ultra-low-latency high-definition video transmission. The transmitter supports HDMI input and HDMI loop out, and the receiver supports dual HDMI output

Product Interface Definition

(1)Transmitter

1. RP-SMA Antenna Male Interface
2. Expansion Accessory Mounting Hole
3. HDMI Loop Out Interface
4. HDMI Input Interface
5. DC Power Input Interface
6. Video Indicator
7. Link Indicator
8. Channel Button
9. Micro USB Interface
10. Pairing Button
11. Power Switch
12. 1/4-20 Threaded Hole

(2)Receiver

1. RP-SMA Antenna Male Interface

2. Expansion Accessory Mounting Hole

3. HDMI Output1 Interface
4. HDMI Output2 Interface
5. DC Power Input Interface
6. Video Indicator
7. Link Indicator
8. Channel Button
9. Micro USB Interface
10. Pairing Button
11. Power Switch
12. 1/4-20 Threaded Hole

Product Installation

1. Install the antenna as shown
2. Fixed transmitter, receiver
3. Install battery
4. Power on, open to "ON" state

Use Function Introduction

1. Pairing Function

Press and hold the pairing button between the transmitter and the receiver at the same time. The Link light flashes red rapidly, and the transmitter and receiver enter the pairing mode. After the pairing is successful, the Link light is steady green, as shown in Figure 5.

1. Function Description

Double-click the FM button to switch the frequency value.

1. OSD Function

Press and hold the Receiver Channel/OSD button to call up the OSD to display the wireless parameters and version information of the device. After clicking or no operation for 10s, the OSD is blanked.

5

Status Light and Display Instructions

Link Indicator

Connection Status	Disconnect	Pairing	Connected - Strong Signal	Connected - Weak Signal
Display Light	Red Light	Red Light	Green Light	Yellow Light
Status	Slow Flash	Quick Flash	Stays On	Slow Flash

Video Indicator

Whether there is a video source	Have	No
Display Light	Yellow Light	/
Status	Stays On	Stays Off

Product Parameter List

	Transmitter	Receiver
Interface	HDMI Input (Type A Female)HDMI Loop Out (Type A Female)2 Antenna (RP-SMA Male)DC Input、Micro USB	HDMI Output1 (Type A Female)HDMI Output2 (Type A Female)2 Antenna (RP-SMA Male)DC Input、Micro USB
Power Supply Voltage Range	6~16V DC	6~16V DC
Power Consumption	<6W	<5W
Weight	145g	145g
Size	(LxWxH) :105x62x22mm not include antennas and battery plate	(LxWxH) :105x62x22mm not include antennas and battery plate
Input Video Format	HDMI: 480P60,576P50,720P50/60, 1080i50/60,1080P30/50/60	/
Output Video Format	/	HDMI: 480P60,576P50,720P50/60, 1080i50/60,1080P30/50/60
Frequency Band	5GHz	5GHz
Modulation Mode	OFDM	OFDM
Transmission Power	maximum17dBm	/
Receiving Sensitivity	/	-80dBm
Transmission Latency	<0.1s
Bandwidth	20/40MHz	20/40MHz

Common Troubleshooting

No output on the display side

1. Please check the power of the transmitter and receiver. If it is powered by battery or external power supply, please make sure that the battery or external power supply has power and output normally

2. Please check if the antenna connected to the transmitter and receiver is securely installed

3. Please check if the transmitter's Video light is on; if not, please check if the HDMI cable connected to the transmitter is reliably connected to the camera and whether the camera has video outputs

4. Please check if the video output format of the camera is compatible with this product.
5. Please check if the battery level is too low

Poor Video Quality

1. Please check the HDMI input and output cable connections are reliable
2. Please ensure that the transmitter and receiver are placed at least 1.5 meters above the ground
3. Please check the status of the Link light. If the status is slow yellow, the wireless signal strength is too weak. In this case, please switch the wireless communication frequency or shorten the wireless connection distance