Hall Technologies Discovery Series User manual

Hall Technologies January 3, 2023 Page 1 of 13
Hall Technologies • 1234 Lakeshore Dr Suite #150 Coppell, TX 75019 • halltechav.com
DSCV2-70-TX-US
4K UHD In-Wall Transmitter with USB Host and CEC Triggering
USER MANUAL
January 3, 2023

Hall Technologies January 3, 2023 Page 2 of 13
Table of Contents
Introduction ................................................................................................................................................ 3
Overview ........................................................................................................................................ 3
Features .......................................................................................................................................... 3
Package Contents ....................................................................................................................................... 4
Panel Description ........................................................................................................................................ 5
Front Panel ..................................................................................................................................... 5
Rear Panel ....................................................................................................................................... 6
Application Wiring ...................................................................................................................................... 7
Automatic Switching ................................................................................................................................... 8
Device Control ............................................................................................................................................ 8
RS232 Control from Wall Plate to Device ....................................................................................... 8
RS232 Control from Control System to Wall Plate .......................................................................... 9
Troubleshooting ....................................................................................................................................... 10
Specifications ............................................................................................................................................ 11

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Introduction
OVERVIEW
The DSCV2-70-TX is a 3x1 auto switching HDBaseT 2.0 transmitter that supports long distance transport
of HDMI, USB-C and high speed USB 2.0 signals up to 40m/131ft using a Cat5e/6/6a/7 cable. It is 4K
compatible with a max resolution of 4K@60Hz, 4:2:0 8-bit deep color. The PoH feature enables the
transmitter to be powered by an HDBT receiver.
The transmitter allows you to automate the display power ON by using pre-loaded RS-232 commands
whenever a video signal is introduced to the system. It will also turn the display power OFF after a
specified amount of time has passed when no video signal is present. It gives the ability turn the display
ON or OFF as well and switch from one input to another manually using the control buttons on the
transmitter panel.
The DSCV2-70-TX is ideal for situations where USB must be extended alongside HDMI for display
interactivity for items such as interactive whiteboards or projectors.
NOTE: the DSCV2-70-TX must be used with an HDBaseT 2.0 receiver, such as the DSCV-70-RX, sold
separately.
FEATURES
• Two HDMI inputs, one USB-C input and one HDBT output
• Transmits 4K@60Hz (YUV 4:2:0 color sub-sampling) up to 40m/131ft and 1080P@60Hz signal up
to 70m/230ft via a Cat6a/7 cable
• Transmits 4K@60Hz (YUV 4:2:0 color sub-sampling) up to 35m/115ft and 1080P@60Hz signal up
to 60m/197ft via a Cat5e/6 cable
• Supports automatic switching
• Additional analog audio input pass-through allows for audio distribution to the HDBT receiver side
• High-speed USB 2.0 pass-through over HDBT up to 70m
• PoH capable – can be powered by connected receiver with PSE module
• Firmware upgrade through Micro USB port

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Package Contents
• 1 x Transmitter
• 1 x Wall Plate Plastic Panel (2-Gang US, with screws)
• 1 x USB Type-B to USB Type-A Cable
• 1 x Phoenix Male Connector (3.5mm, 4-pins)

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Panel Description
FRONT PANEL
ID
Name
Description
1&2
HDMI IN 1-2
HDMI Inputs 1 & 2. Connect to HDMI sources.
3
USB-C
USB-C Input. Connect to a USB-C Source
4
RESET
Use this button to reset the device. When the transmitter is powered on, use a
pointed stylus to hold this button for five or more seconds and then release. The
transmitter will reboot and restore its factory defaults.
5
UPDATE
Micro USB port for firmware update or RS-232 control.
6
HDMI LEDs (1&2)
• On: Corresponding HDMI input signal is being transmitted.
• Off: No HDMI signal is being transmitted or signal is unstable.
7
USB-C LED
• On: The USB-C input signal is being transmitted.
• Off: No USB-C signal is being transmitted or signal is unstable.
8
HDCP LED
• On: Video signal is being transmitted.
• Off: Video signal is not being transmitted.
9
LINK LED
• On: HDBT link is normal.
• Off/Blinking: No HDBT link or link error.
10
POWER LED
• On: The transmitter is powered on.
• Off: The transmitter is powered off.
11
INPUT Button
Press this button to select an input between two HDMI and one USB-C sources.
12
DISPLAY Button
• Display On: Short press to turn on the display device.

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• Display Off: Hold press for at least 3 seconds to turn off the display device.
13
AUDIO IN
Pass-through audio input.
14
USB HOST
USB Type-B input for a USB Host device (for HDMI 1&2)
REAR PANEL
ID
Name
Description
15
HDBT OUT
HDBaseT output connected to an HDBT receiver.
16
RS232
• Pins TX, RX and G are used to connect to a third-party device for controlling this
transmitter.
• Pins 12V and G are used for providing 12V power (max 5W) to the third-party
device or for connecting a local 12V power adapter.

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Application Wiring
The above application demonstrates the possible connections for the DSCV2-70-TX and DSCV-70-RX. In
this application the laptop not only shares video via HDMI, but also receives video from the HT-CAM-
1080PTZ via the USB host, allowing for the laptop to be used as a soft codec.

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Automatic Switching
The DSCV2-70-TX offers automatic switching. This function follows the Last-In-First-Out rule. For
example, if a new active source is connected, the transmitter will automatically switch to this source. If
the selected source is removed, the transmitter will automatically switch to the source with top priority.
(Default priority: USB-C > HDMI IN 1 > HDMI IN 2)
This switching includes both HDMI 1 + USB Host, HDMI 2 + USB Host or USB-C.
Note: The automatic switching function can detect the input signal with 5V only. If the selected source
in standby mode provides a continuous 5V power output, this function will not work (i.e. the transmitter
will not switch the input to other active sources).

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Device Control Triggered
Display power control can be triggered by the wall plate Display button or from a source being detected
or no source being active. The Display button will send out a power on command when pressed and
released. It will only send out the power off command when the Display button is pressed and held for
5 seconds. CEC control is enabled for both Auto power and the Display button by default. Advanced
users can program RS232 Serial control to be triggered by the Display Button or Auto power via API
commands while connected to either the front panel micro-USB or RS-232 connector on the back of the
TX or RX. (API commands for the control can be found in a separate document.)
CONNECTING LAPTOP TO DISCOVERY TO SET THE RS-232 DISPLAY POWER COMMANDS

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Device Control Passthrough
Display power commands can be sent from a control system using either RS232 port on the back of the
Discovery receiver or transmitter and will pass through whatever signal is sent in. In some cases, a null
modem must be used (swapping of TX and RX pairs).
TYPICAL RS232 PASSTHROUGH USE CASE

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Troubleshooting
Problem Type
Problem
Options
Video
No Video on Display
Confirm the HDMI input on the DSCV2-70-TX is selected (verify LED is
illuminated for the source)
Confirm the connected source is sending video to the DSCV2-70-TX
(verify the connected laptop is in duplicate or extend mode)
Confirm at least one side (typically the receiver) has the local power
connected
Test the category cable to confirm proper pinout and no shorts in the
cable
Confirm the distance between the transmitter and receiver does not
exceed specifications (depending on the desired resolution)
Confirm the HDMI input of the display is correctly selected

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Specifications
Technical
Inputs
2 x HDMI, 1 x USB-C, 1 x Audio (3.5mm, Unbalanced stereo), 1 x RS-232 (5-pin Phoenix)
Outputs
1 x HDBT, 1 x USB Host
Firmware Update
1 x Micro USB
Input Video Signal
HDMI (4K@60Hz YUV 4:2:0, HDCP 2.2)
USB-C DP Alt Mode
Output Video Signal
HDBT 2.0
Input/Output Resolution Supported
HDMI:
VESA: 2560x16008 | 2560x14408 | 1920x12008 | 1920x10808 | 1680x10508 | 1600x12008 |
1600x9008 | 1440x9008 | 1366x7688 | 1360x7688 | 1280x10248 | 1280x9608 | 1280x8008 |
1280x7688 | 1280x7208 | 1024x7688 | 800x6008
SMPTE: 4096x2160P2,5,8 | 3840x2160P2,5,8
USB-C: Same As Above
1 = @23.98Hz, 2 = @24Hz, 3 = @25Hz, 4 = @29.97Hz, 5 = @30Hz, 6 = @50Hz, 7 =
@59.94Hz, 8 = @60Hz
Audio Format
HDMI/USB-C: Fully supports audio formats in HDMI 2.0 specification, including PCM
2.0/5.1/7.1, Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio and DTS:X
Audio In: Stereo
Maximum Pixel Clock
350MHz
Maximum Data Rate
10.2Gbps
Control Method
Auto Switching, Front panel buttons, API Commands
Transmission Distance
Cat5e/6
60m/197ft (1080P@60Hz)
Cat6a/7
70m/230ft (1080P@60Hz)
Cat5e/6
35m/115ft (4k@60Hz 4:2:0)
Cat6a/7
40m/131ft (4k@60Hz 4:2:0)
General
Operating Temperature
0°C ~ 45°C (32°F to 113°F), 10% to 90%, non-condensing
Storage Temperature
-20°C ~ 70°C (-4°F to 158°F), 10% to 90%, non-condensing
ESD Protection
Human-body Model: ±8kV (Air-gap discharge) / ±4kV (Contact discharge)
Power Supply
PoH, powered by connected receiver with PSE module; or local power supply through 12V
phoenix connector
Power Consumption (Max)
7.8W
Dimension (Width x Height x Depth)
89mm x 38.4 mm x 105.6mm/3.5” x 1.51” x 4.16”
Net Weight
0.3kg/0.66lbs

Hall Technologies January 3, 2023 Page 13 of 13
© Copyright 2022. Hall Technologies
All rights reserved.
1234 Lakeshore Drive, Suite #150, Coppell, TX 75019
halltechav.com / [email protected]
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