Hall Technologies GEM-EX-S User manual

Hall Technologies July 18, 2023 Page 1 of 15
Hall Technologies • 1234 Lakeshore Dr Suite #150 Coppell, TX 75019 • halltechav.com
GEM-EX-S/R
Dual 4K HDMI, USB, AUDIO, & RS-232 over a single CAT 6 Extender with Daisy-Chainable Receivers
USER MANUAL
July 18, 2023

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Important Safety Instructions
1. Do not expose this apparatus to rain, moisture, dripping or
splashing and that no objects filled with liquids, such as
vases, shall be placed on the apparatus.
2. Do not install or place this unit in a bookcase, built-in
cabinet or in another confined space. Ensure the unit is well
ventilated.
3. To prevent risk of electric shock or fire hazard due to
overheating, do not obstruct the unit’s ventilation openings
with newspapers, tablecloths, curtains, and similar items.
4. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers)
that produce heat.
5. Do not place sources of naked flames, such as lighted
candles, on the unit.
6. Clean this apparatus only with dry cloth.
7. Unplug this apparatus during lightning storms or when
unused for long periods of time.
8. Protect the power cord from being walked on or pinched
particularly at plugs.
9. Only use attachments / accessories specified by the
manufacturer.
10. Refer all servicing to qualified service personnel.

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Table of Contents
Introduction ................................................................................................................................................ 4
Overview......................................................................................................................................... 4
Features........................................................................................................................................... 5
Package Contents........................................................................................................................................ 6
Setup ........................................................................................................................................................... 6
Installation ...................................................................................................................................... 6
DisplayPort Adapters....................................................................................................................... 7
Single Video Display Receiver ......................................................................................................... 8
RS-232 Baud Rate Programming and Dual-Port Support................................................................ 8
Connectors & Indicators.............................................................................................................................. 9
GEM-EX-S (front)............................................................................................................................. 9
GEM-EX-S (back)............................................................................................................................ 10
GEM-EX-R (front)........................................................................................................................... 11
GEM-EX-R (back) ........................................................................................................................... 12
Troubleshooting ........................................................................................................................................ 13
Specifications ....................................................................................................................................... 13-14

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Introduction
OVERVIEW
The GEM-EX is comprised of the GEM-EX-S sender and the GEM-EX-R receiver. The system is used to
extend USB 2.0, Audio, dual RS-232, and dual display HDMI video supporting various resolutions
including 1080p @ 60 Hz and 4K UHD @ 30 Hz. These signals are extended to one or more receivers up
to a distance of 100 m (328 ft.) over a single CAT6 cable.
The sender features two HDMI inputs, one USB input, one analog audio input, and a dual-port capable
RS-232 port for connection to a dual-head PC. The audio input is embedded into HDMI A. It provides
two local HDMI outputs (corresponding to the two HDMI inputs) and features an internal USB hub with
two local USB outputs. Additionally, there are two separate RJ45 output ports to extend these signals
to multiple remote locations.
The receiver provides two HDMI outputs, 6 USB ports, an analog audio output, and a dual-port capable
RS-232 port. Two of the USB ports are labeled for use with keyboard and mouse; however, they can
also be connected to other USB devices such as KVM switches or touchscreen displays if desired. The
audio output is de-embedded from HDMI A.
For connection of other USB devices such as printers or scanners, four additional general-purpose USB
2.0 ports are available. For security purposes, USB memory devices are not supported by default. If you
want to enable USB memory support, please contact Hall Technologies.
In a setup with one Sender going to only one Receiver, the USB ports automatically pair with the
Sender. However, when there is more than one GEM- EX Receiver connected to the same Sender, only
one Receiver can be paired at a given time. Pairing is accomplished using a push button on the front
panel of the Receiver. A corresponding LED next to the button indicates USB pairing status with the
Sender.
Each Receiver features an RJ45 “LINK OUT” port that can be daisy-chained to down-stream Receivers.
All signals are re-buffered, so the LINK OUT port can drive cables to 100 meters long.
It is important to note that the RJ45 output ports (on the Sender or the Receiver), can also be
connected to ULTRA-V Receivers. ULTRA-V Receivers provide only one video output and no USB. The
ULTRA-V Receivers show Video A by default; however, they can be configured to display Video B if
desired. Please refer to the ULTRA-V User’s Manual for further details.

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Typical Connection Diagram
FEATURES
Supports high resolution HDMI video including FHD. (1920x1080), WQUD (2560x1440), and 4K UHD
(3840x2160)
Two video streams, one USB port, one audio signal, and two RS-232 parts extended over a single
CAT6 cable up to 100m/328ft.
Full plug-and-play support with USB keyboard, mouse, and connected peripherals.
Computer OS independent –No driver or software required.
Local HDMI and USB output on the Sender
Two Sender extension outputs and one Receiver daisy-chain output to distribute video to multiple
locations.
No video calibration required, no video quality reduction due to cable length or resolution.
Locking power supply connector to prevent inadvertent disconnection.
Sender includes mounting ears for standard 19” rack; Receiver includes mounting brackets for
surface mounting.

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Package Contents
GEM-EX-S
1x GEM-EX-S
2x Rack mount ears and screws
1x power supply (Hall P/N 511-IEC5V4AP5L)
1x user manual card
GEM-EX-S
1x GEM-EX-R
2x Surface-mount brackets
1x power supply (Hall P/N 511-IEC5V4AP5L)
1x user manual card
Setup
INSTALLATION
•Connect the PC HDMI outputs to the GEM-EX-S ports marked “HDMI A IN” and “HDMI B IN”
using quality HDMI cables.
•Connect the PC USB to the GEM-EX-S port marked “USB IN” using a USB cable.
•Optionally, connect PC analog audio to the GEM-EX-S port marked “AUDIO IN” using a 3.5 mm
audio cable, to embed an external audio signal into HDMI A
•Optionally, connect an RS-232 device (or two, using Hall Technologies CA10223 and CA10224
cables) Use PC GUI to set baud rate(s).
•Optionally, connect HDMI displays to HDMI A/B OUT ports, and USB peripherals to the USB
LOCAL ports.
•Using a CAT6 able, connect the GEM-EX-S “link out” port to the GEM-EX-R “link in” port.
•Connect remote HDMI displays to the GEM-EX-R HDMI A and HDMI B output ports.
•Connect keyboard, mouse, KVM Switch, or touchscreens to the GEM-EX-R ports marked as
KBRD/MOUSE
•Optionally, connect other USB devices to any of the USB 2.0 ports.
•Optionally, connect external speakers to “audio out” to use audio from “HDMI A” or “AUDIO
INPUT” of GEM-EX-S.

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INSTALLATION
While HDMI is the most widely adopted video standard, there are a number of computer and display
manufacturers that rely on DisplayPort for higher resolutions such as 2560 or 4K. Hall Research offers
4K compatible adapters to convert between these two video standards.
*Note: These adapters are unidirectional. For example, the DisplayPort to HDMI adapter cannot
convert a HDMI signal to DisplayPort.
To connect to a source (PC) with DisplayPort output, use GC-DP-HD.
Model GC-DP-HD: DisplayPort source to HDMI output
Virtually all monitor and TV’s have HDMI (or DVI) inputs. But if your display only has a display port
input, the following adapter convers HDMI to DP.
Model GC-DP-HD: DisplayPort source to HDMI output

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SINGLE VIDEO DISPLAY RECEIVER
In cases where only a single video display is required, an ULTRA-V-R Receiver can be connected to
either the GEM-EX Sender or Receiver. The Receiver will display the video coming from HDMI A by
default, or it can be configured to display video from HDMI B if desired. Please refer to the ULTRA-V
User’s Manual for more information.
RS-232 Baud Rate Programming and Dual-Port Support
The RS232 ports on the GEM-EX-S and GEM-EX-R have different baud rates by default. RS-232 Port A
defaults to 9600 baud. RS-232 Port B defaults to 115200 baud.
These can change to any standard rate between 2400 and 15200 using free PC GUI software. Both
sender and receiver are programmed separately.
*Note: Baud Rate Conversion: When the GEM-EX-S and GEM-EX-R are set to different baud rates; they
will automatically convert between the two.
The GEM-EX has a dual-port RS-232 output, supporting a second RS-232 extension.
This requires the use of adapter cables CA10233 and CA10224, sold separately.

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Connectors & Indicators
GEM-EX-S Front
No.
Name
Description
1
SERVICE
•USB-Mini connection, used for upgrading firmware or configuring parameters such as
EDID and RS-232 baud rates via free PC GUI.
2
USB HUB
•LED indicates that the hub is active (note that PC/Host has the ability to put the hub
in “selective suspend” mode in which case the Hub LED will turn off. Hosts usually do
this if no downstream devices are connected to the hub.
3
VID/LINK
•Status indicators of HDMI A/B
-VID: When this LED is solidly on, it indicates the system has detected at least one
receiver and is actively transmitting video and data. Blinks if the system has never
seen a compatible receiver or it is not transmitting video.
4
POWER
•Power LED lights when power is supplied.

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GEM-EX-S Back
No.
Name
Description
1
HDMI A IN/OUT
HDMI A input port and local output. HDMI A IN is extended to GEM-EX-R HDMI A
OUTPUT.
2
HDMI B IN/OUT
HDMI B input port and local output. HMDI B IN is extended to GEM-EX-R HDMI B
OUTPUT.
3
AUDIO IN
Analog audio input. When connected, it embeds and replaces the audio in HDMI A.
Audio is extended to GEM-EX-R HDMI A and AUDIO OUT ports.
4
USB HOST
IN/LOCAL
USB input port, and local outputs. HOST IN is extended to GEM-EX-R USB ports.
5
RS-232
RS-232 communication port, extended to GEM-EX-R. Port A defaults to 9600 baud. Port
B defaults to 115200 baud.
6
REMOTE OUTPUTS
Two separate outputs for connection to remote GEM-EX-R receivers. Use CAT6 cable to
extend up to 100 m/238 ft.
- GREEN LED on left side of ports indicates an active link to GEM-EX-R or ULTRA-V-R
7
5V DC
Power input. Connect supplied 5V DC locking power supply to power sender.

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GEM-EX-R Front
No.
Name
Description
1
SERVICE
•USB-Mini connection, used for upgrading firmware or configuring parameters such as
USB mass storage class device filtering or RS-232 baud rates via free PC GUI. .
2
USB 2.0 PAIRING
•When only one receiver is connected to a sender, the receiver will automatically pair
by default and then the PAIRING LED will be on. If multiple receivers are connected,
the user needs to decide which receivers USB ports is to be paired with the sender.
To change pairing to a different receiver, press the button and the PAIRING LED will
light. If the pairing LED is solidly lit, the receiver has successfully paired with the
sender, but if it is blinking, the pairing was unsuccessful, and you should press the
pairing button again until the LED is solidly lit.
3
HDMI A/B
VID/LINK
•Status indicators of HDMI A/B
-VID: This LED is lit when HDMI video is being output.
-VID: When this LED is solidly on, it indicates the system has detected at least one
receiver and is actively transmitting video and data. Blinks if the system has
never seen a compatible receiver or it is not transmitting video.
4
POWER
•Power LED lights when power is supplied.

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GEM-EX-R Back
No.
Name
Description
1
HDMI A IN/OUT
Outputs HDMI from GEM-EX-S HDMI A/HDMI B Input ports respectively.
2
USB K/M and 2.0
Connect keyboard/mouse/KVM switchers or other HID input devices including
touchscreens to K/M ports. The rest are general purpose ports for other USB devices
such as printers or scanners. By default, USB memory devices are not allowed, and
these USB ports do not support USB webcams.
3
AUDIO OUT
Analog audio input. When connected, it embeds and replaces the audio in HDMI A.
4
RS-232
RS-232 communication port, extended to GEM-EX-S. Port A defaults to 9600 baud. Port
B defaults to 115200 baud.
5
LINK IN/LINK OUT
LINK IN receives video/USB rom GEM-EX-S; LINK OUT is used to daisy-chain to another
GEM-EX-R or ULTRA-V-R.
6
5V DC
Power input. Connect supplied 5V DC locking power supply to power receiver.

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Troubleshooting
If you are experiencing problems getting the GEM-EX to work properly, please use the following
troubleshooting suggestions.
•Ensure that all connections are secure. Check all status LEDs to ensure proper operation.
•Try resetting the system by unplugging the power supply, waiting 5 seconds, and plugging it
back.
•Try restoring factory defaults using the PC GUI.
Specifications
Video
Standards
DVI (single link)
Resolutions
PC VGA to WQXGA (2560x1600)
HDTV 480p to 4K.UHD including QHD (2560x1440)
Refresh Rates
60 Hz for resolutions up to and including HD (1920x1080) and WUXGA
(1920x1200) 30 Hz for resolutions above and including QHD (2560x1440)
Other Signals
USB
GEM-EX-S: USB 2.0 (2) from built-in hub
GEM-EX-R: USB 1.0 (2) and USB 2.0 (4)
AUDIO
GEM-EX-S: Analog line level input. Embeds into HDMI A.
GEM-EX-R: Analog line level output. Extracted from HDMI A.
RS-232
DB9 with (2) serial ports. Supports baud rates from 2,400 to 115,200.
Connectors
GEM-EX-S
2x HDMI inputs, 2x HDMI Outputs (local)
1x USB-B host port, 2x USB-A device ports
X 3.5 mm analog stereo audio input
1x DB9-F RS-232 port (dual-port capable)
2x RJ45 Link outputs
1x 2.1 mm locking DC power input
GEM-EX-R
2x HDMI outputs
2x USB-A 1.1 Device ports
4x USB-A 2,0 device ports
1x 3.5 mm analog stereo audio output
1x RJ45 link input, 1x Rj45 link output
1x 2.1 mm locking DC power input

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General
Power Supply
100 VAC to 240 VAC, 47-63 Hz, External; 5 VDC
Temp/humidity
Storage: -40 to +158 degrees F (-40 to +70 degrees C)/ 10% to 90%, non-
condensing
Operating: +32 to +122 degrees F (0 to +50 degrees C) / 10% to 90%, non-
condensing
Typical DC
5 VDC, 4.0 A power supply
Current Draw
GEM-EX-S: 2.5 A DC depending on # and type of connected USB devices.
GEM-EX-R: 1.5 A DC depending on # and type of connected USB devices.
Cooling
Convection
Enclosure Type
Metal (Steel)
Dimensions
GEM-EX-S: 6.09” L x 11.23” W x 1.66” H
GEM-EX-R: 5.04” L x 9.00” Q x 1.12” H
Product Weight
Model only
GEM-EX-S: 2.8 lbs (1.3 Kg)
GEM-EX-E: 1.3 lbs (0.6 Kg)
Shipping
GEM-EX-S: 4.4 lbs (2.0 Kg)
GEM-EX-R: 3.1 lbs (1.4 Kg)
Safety
CE
EMI/EMC
CE, FCC, Class A
MTBF
90,000 hours (estimate)
Warranty
3 years parts and labor

Hall Technologies July 18, 2023 Page 15 of 15
© Copyright 2023. Hall Technologies
All rights reserved.
1234 Lakeshore Drive, Coppell, TX 75019
halltechav.com / s[email protected]
[phone]