BG-4KBHS-PRO
HDMI 2.0 & 12G/6G/3G/HD-SDI Cross Converter and Scaler with
3.5” LCD Display/Audio Embedder/De-Embedder
User Manual
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 2
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
TABLE OF CONTENTS
Statement 4
Safety Precaution 4
Introduction 5
Features 5
Packing List 6
Specifications 7
Operation Controls and Functions 9
Connection Diagram 10
Troubleshooting 11
Tech Support 12
Limited Product Warranty Terms 12
Mission Statement 12
Copyright 12
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 3
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Statement
Please read these instructions carefully before connecting, operating, or configuring this
product. Please save this manual for future reference.
Safety Precaution
● To prevent damaging this product, avoid heavy pressure, strong vibration, or immersion
during transportation, storage, and installation.
● The housing of this product is made of organic materials. Do not expose to any liquid,
gas, or solids which may corrode the shell.
● Do not expose the product to rain or moisture.
● To prevent the risk of electric shock, do not open the case. Installation and maintenance
should only be carried out by qualified technicians.
● Do not use the product beyond the specified temperature, humidity, or power supply
specifications.
● This product does not contain parts that can be maintained or repaired by users.
Damage caused by dismantling the product without authorization from BZBGEAR is not
covered under the warranty policy.
● Installation and use of this product must strictly comply with local electrical safety
standards.
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 4
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Introduction
The BG-4KBHS-PRO is a versatile HDMI 2.0 and 12G/6G/3G/HD-SDI
cross-converter and scaler designed for professional monitoring, signal conversion,
and testing applications. Equipped with a 3.5” LCD display and intuitive
push-button controls, it provides real-time monitoring and on-screen display (OSD)
management for resolution, image adjustments, and output configuration. With
support for a wide range of formats - including 12G-SDI 4K60 and HDMI 2.0 up to
4K60 - it ensures compatibility across broadcast, production, and AV environments.
Beyond conversion, the BG-4KBHS-PRO functions as a powerful analysis and
diagnostic tool. It offers waveform monitoring for YCbCr and RGB signals, audio
level meters, and a range of built-in test patterns for signal verification and
calibration. Additional features include audio embedding/de-embedding via S/PDIF,
noise reduction, video enhancement, horizontal and vertical mirroring, and firmware
upgradability.
Features
● Video Format Support:
- 12G-SDI: 4K2K @ 50/59.94/60Hz
- 6G-SDI: 4K2K @ 23.98/24/25/29.97/30Hz
- 3G-SDI: 1080p @ 50/59.94/60Hz (4:4:4)
- HD-SDI: 720p @ 50/59.94/60Hz, 1080i @ 50/59.94/60Hz, 1080p @ 24/30Hz
- SD-SDI: NTSC @ 59.94Hz, PAL @ 50Hz
- HDMI: Up to 4K2K @ 60Hz
● Video Bandwidth: SDI up to 11.88 Gbps, 11.88/1.001 Gbps; HDMI up to 18 Gbps
● Resolution Support: Multiple VESA standards supported for output video
resolutions
● Deinterlacing: Enables smooth playback of interlaced video sources
● Test Patterns: Built-in video and output test patterns for calibration and
troubleshooting
● Cross Conversion: Simultaneous HDMI ↔ SDI conversion with support for SDI to
HDMI, HDMI to SDI, and same-format passthrough
● Video Processing: Supports noise reduction, video enhancement, H/V mirror,
zoom, pixel-to-pixel, underscan, and check field functions
● Waveform & Monitoring: YCbCr waveform display and audio level meter with OSD
overlay
● On-Screen Display (OSD): Menu-based control interface with monitoring features
● Audio Functions: Supports audio embedding and extraction via S/PDIF, with audio
level bars display
● Control Interface: Push-button operation for quick setup and adjustments
● Firmware Upgrade: Upgradeable firmware ensures long-term compatibility and
feature expansion
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 5
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Packing List
● 1x BG-4KBHS-PRO
● 1x 12V DC Adapter
● 1x Product Manual
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 6
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Specifications
Technical Specifications
Role of Usage
HDMI 2.0 and 12G-SDI Bi-directional Scaler Converter with 3.5” LCD
Monitor
SDI Standards
12G / 6G / 3G / HD-SDI
HDMI Standards
HDMI 2.0
Video Bandwidth
SDI: 11.88 Gbps, 11.88/1.001 Gbps
HDMI: Up to 18 Gbps
Video Support
12G-SDI: 4K2K @50/59.94/60Hz
6G-SDI: 4K2K @23.98/24, 25, 29.97, 30Hz
3G-SDI: 1080p @50/59.94/60Hz (4:4:4)
HD-SDI: 720p @50/59.94/60Hz, 1080i @50/59.94/60Hz, 1080p
@24/30Hz
SD-SDI: NTSC @59.94Hz, PAL @50Hz
HDMI: Up to 4K2K @60Hz
Audio Support
PCM (48 kHz, up to 8 channels)
ESD Protection
- Human body model: ±15kV (air-gap discharge), ±8kV (contact
discharge)
- Core chipset: ±2kV
PCB Stack-up
8-layer board (Impedance control: differential 100Ω; single 50Ω)
Firmware Update
Via USB port
Connections Specifications
Input
1 × HDMI
1 × BNC (SDI)
1 × TOSLINK
Output
2 × HDMI
3 × BNC (SDI out/loop-out)
1 × TOSLINK
BNC Connector
75Ω inter-locked socket
HDMI Connector
Type A (19-pin female)
USB Connector
Micro USB
Mechanical Specifications
Housing
Metal enclosure
Power Supply
+12V DC
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 7
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Operating
Temperature
32 ~ 104°F / 0 ~ 40°C
Storage
Temperature
-4 ~ 140°F / -20 ~ 60°C
Relative Humidity
20 ~ 90% RH (no condensation)
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 8
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Operation Controls and Functions
Front and Rear Panel
1. MICRO USB: F/W update & console port for SW
2. S/PDIF OUT (TOSLINK)
3. HDMI OUT 2: Connect to a HDMI display
4. HDMI OUT 1: Connect to a HDMI display
5. SDI OUT 1-2: Connect to a 12G/6G/3G/HD/SD-SDI display
6. SDI IN: Connect to a 12G/6G/3G/HD/SD-SDI source
7. SDI LOOPOUT: Connect to a 12G/6G/3G/HD/SD-SDI display
8. HDMI IN: Connect to a HDMI source
9. SDI GENLOCK: Connect to a reference source
10. S/PDIF IN (TOSLINK)
11. POWER JACK: 12V DC power
12. 3.5” LCD Monitor
13. PUSH BUTTON: Enter OSD menu
14. PUSH BUTTON: OSD UP button
15. PUSH BUTTON: OSD DOWN button
16. PUSH BUTTON: OSD LEFT button
17. PUSH BUTTON: OSD RIGHT button
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 9
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Connection Diagram
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 10
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Troubleshooting
Problems
Causes
Solutions
No Power / All LED off
Power supply not connected,
connected fully, or wrong power
supply.
Check if the power supply is
connected correctly and the
output voltage value is within
recommended specifications.
No sound or sound issues
The HDMI connection is faulty,
the audio format is not
supported by the displays, or
the source player is set to
another port for audio output
Check if the HDMI cables are
connected correctly.
Check if the audio format is
supported by the display and
that a user has not changed the
supported audio format on the
player`s audio output. Ensure
output settings from the HDMI
source device as set correctly.
No picture or picture flickers
The HDMI cable may be faulty
or the category cable quality is
faulty.
Check if the HDMI
and category cable connections
are correct and undamaged.
Change to another good
working HDMI cable or category
cable (CAT6 or better cable is
recommended).
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 11
BZBGEAR BG-4KBHS-PRO PRODUCT MANUAL
Tech Support
Have technical questions? We may have answered them already!
Please visit BZBGEAR’s support page (bzbgear.com/support) for helpful information and
tips regarding our products. Here you will find our Knowledge Base
(bzbgear.com/knowledge-base) with detailed tutorials, quick start guides, and step-by-step
troubleshooting instructions. Or explore our YouTube channel, BZB TV
(youtube.com/c/BZBTVchannel), for help setting up, configuring, and other helpful how-to
videos about our gear.
Need more in-depth support? Connect with one of our technical specialists directly:
Phone
1.888.499.9906
Email
support@bzbgear.com
Live Chat
bzbgear.com
Limited Product Warranty Terms
Pro Line: 5-year warranty from the date of purchase for AV/Broadcasting products bought
on or after August 1, 2024.
Essential Line: 3-year warranty from the date of purchase for AV/Broadcasting products
bought on or after August 1, 2024.
Cables: Lifetime Limited Product Warranty.
For complete warranty information, please visit bzbgear.com/warranty.
For questions, please call 1.888.499.9906 or email support@bzbgear.com.
Mission Statement
BZBGEAR is a breakthrough manufacturer of high-quality, innovative audiovisual equipment
ranging from AVoIP, professional broadcasting, conferencing, home theater, to live
streaming solutions. We pride ourselves on unparalleled customer support and services.
Our team offers system design consultation, and highly reviewed technical support for all
the products in our catalog. BZBGEAR delivers quality products designed with users in
mind.
Copyright
All the contents in this manual and its copyright are owned by BZBGEAR. No one is allowed
to imitate, copy, or translate this manual without BZBGEAR’s permission. This manual
contains no guarantee, standpoint expression or other implies in any form. Product
specification and information in this manual is for reference only and subject to change
without notice.
All rights reserved. No reproducing is allowed without acknowledgement.
Address: 830 National Drive #140, Sacramento, CA 95834, USA · Tel: +1(888)499-9906 · Email: support@bzbgear.com 12
