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DVI DISPLAY
HDMAX121
HDMAX421
MERIDIAN DVD COMPUTER W/DVI HD-VCR HD SATELLITE RECEIVER
UP TO 150ft
DVI to HDMI CABLE
HDMI to DVI CABLE
HDMI
HDMI from
Meridian player
DVI/HDMI
converter cable
The 421 Switch can be controlled in several
ways. For direct use, a front-panel button al-
lows the users to step through the inputs. LEDs
indicate which input is selected.
For serial control, a 9600 baud serial port is pro-
vided, allowing interfacing via RS232 command.
In addition, sources may be assigned to different
inputs, eg Cable = input 1, etc. This allows
the unit to be controlled via Meridian Comms
(DIN or BNC) so as to select the correct input
automatically when a source is selected in a
Meridian system. A G12 infrared sensor may be
connected via a Comms port for infrared remote
control capabilities. In this case the sources on
the remote are assigned to the following default
inputs:
Input MSR MSR+
4 CD CD
4 Radio Radio
3 LP Aux
3 TV TV
1 Tape1 Tape
2 Tape2 Sat
3 CDR Disc
3 Cable Cable
4 DVD DVD
2 VCR1 VCR1
1 VCR2 VCR2
1 LD Game
Input assignment can also be carried out in the
Meridian configuration application.
Switcher Input 4 automatically senses the pres-
ence of a Meridian DVD-Audio/Video player,
making a range of additional options available
in the player’s on-screen display allowing video
sources to be assigned to the other Switcher
inputs. (Player firmware revision 1.93 or later re-
quired.) The 421 front panel button is automati-
cally locked out when controlled by a player, to
avoid inadvertent operation.
The 421 Switch includes indicators correspond-
ing to each input to show which is currently
selected. The selected input indicator comes on
solidly when an HDMI input is valid, and flashes
when invalid. The unit is powered by a separate
universal voltage supply or any DC supply from
6 to 15V, at under 3W. The rubber feet may be
removed to reveal holes for permanent installa-
tion – mounting plates and screws provided.
Both the 121 Extender and 421 Switch pass
both HDMI audio and video and are completely
transparent to handshaking, control and data
signals, with extremely high bandwidth and
virtually zero latency.
Common specifications
Cable lengths: 0 to 50m over 24 AWG Shielded twisted pair
0 to 36m over 28 AWG STP
0 to 30m over 30 AWG STP
Compatibility: 480i, 480p, 720p, 1080i, and 1080p DTV resolutions
Auto correction: Signals between –20dB and +6dB are restored to
perfect level, edges and eye pattern
Construction: Mild steel finished in matte black
Power supply: Universal voltage external PSU G29043 supplied.
121 Extender Specifications
Dimensions: 73 x 30 x 130 mm/2.85 x 1.2 x 5.1 in (WxHxD overall)
I/O: One HDMI input connector
One HDMI output connector
Power input socket (barrel type, centre positive)
Indicators: Power, lock LEDs
Power: Unit accepts DC in the range 6–15V, <2VA (W)
421 Switcher Specifications
Dimensions: 220 x 44 x 120 mm/8.6 x 1.75 x 4.7 in (WxHxD inc feet)
I/O: Four HDMI connectors for inputs 1–4
Input 1 includes special sensing for Meridian player
One HDMI output connector
One Meridian Comms DIN connector
One Meridian Comms BNC connector
One DB9 RS232 interface (9600 bits/sec, 8N1)
Power input socket (barrel type, centre positive)
Indicators: Per-input LED indicates valid (solid)/invalid (flashing)
HDMI input selected
Controls: Front-panel button manually steps through inputs;
RS232 input selection; control via Meridian DVD-A/V
player; infrared control with G12 sensor (not sup-
plied)
Power: Unit accepts DC in the range 6–15V, <3VA (W)
Meridian Audio Limited
Latham Road,
Huntingdon, Cambridgeshire PE29 6YE
United Kingdom
Tel +44 (0) 1480 445678
Fax +44 (0) 1480 445686
Meridian America Inc
8055 Troon Circle, Suite C
Austell, Atlanta GA 30168-7849
USA
Tel +1 (404) 344 7111
Fax +1 (404) 346 7111
Email: info@meridian-audio.com
Web: www.meridian-audio.com
Information contained in this data sheet is correct as far as possible, but Meridian Audio accepts no liability
for errors or omissions. E&OE. Trademarks are the property of their respective owners. Meridian Audio
reserves the right to amend product specifications at any time. ©Text & images 2005 Meridian Audio Ltd.
HDMAXDS v1.7 • 20060203 RE
121 Extender & 421 Switch
Typical application using
HDMI and HDMI/DVI
converter cables.