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LTM-DVBETA
SDI-DV-SDI
Pro Media Transcoder with
Embedded SDI Audio
LTM-DVBETA User Manual
© 2005 Laird Telemedia.
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LTM-DVBETA User Manual
800-898-0759 • 845-339-9555 • 2000 Sterling Road • Mount Marion, NY 12456 • www.lairdtelemedia.com
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The LAIRD LTM-DVBETA is a unique product that bridges the gap between the high performance DIGITAL SDI products such as SONY BETACAM SX, BVW-55, DNW-A25 video production equipment and Fire Wire DV. This product is
designed to seamlessly provide Bi-directional signal conversion from 1394 DV to SMPTE -259M SDI DIGITAL with
embedded AES/EBU audio and VITC(SMPTE 12M) input/output.
SONY based RS422 machine control over firewire is also provided for perfect NLE interface. The LTM-DVBETA is a
powerful yet compact cost effective solution for both field production and studio post applications. Housed in a compact 12VDC powered enclosure, the LTM-DVBETA operates in PAL or NTSC with auto detect and features both 6pin
and 4pin firewire connectors.This lightweight package can be set up for field operations where DV cameras are being
converted to SDI with embedded audio. Back in the studio, the unit can be used for SDI conversion to DV for archival
or DV based NLE editing.
LTM-DVBETA is a portable bi-directional DV over 1394a to SMPTE-259M compliant SDI converter with embedded
AES/EBU digital stereo audio. The converter supports DVITC time code in the SDI data stream and also provides
separate VITC input and output for compatible decks via two BNC connectors (SMPTE 12M).The embedded audio
transmitter and receiver conform to SMPTE 272-A (audio at 48kHz, synchronous to video).
■ Bi-directional DV-SDI-DV signal conversion
■ AES/EBU embedded audio at 48kHz, sync to video
■ PAL-NTSC auto detect: PAL-720x576, NTSC-720x480
■ DIGITAL time code support: DVITC I/O via BNC connectors
■ ANALOG time code support: VITC I/O via BNC connectors
■ RS422 Machine control via 9pin D sub (RS422 over 1394a Firewire)
■ Operating Systems Supported: Windows XP, Mac OS X
■ 12 Volt Dc power: 4pin XLR and 2.5mm DC Jack
■ 1394 6pin Buss Powered
■ 4-Pin & 6-Pin FireWire 1394 connectors
■ Compatible operation with Sony Betacam SX, BVW-55 / DNW-A25
F
EATURES
O
PERATIONAL OVERVIEW
GENERAL D
ESCRIPTION
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LTM-DVBETA User Manual
800-898-0759 • 845-339-9555 • 2000 Sterling Road • Mount Marion, NY 12456 • www.lairdtelemedia.com
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REAR PANEL LAYOUT
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Universal DC adapter 12v @1A input
XLR 4-pin battery-pack style power input: Pin-1 (ground), Pin-4 (+12v)
6-Pin 1394a firewire I/O port Bus Power compatible port. This por t can be powered by
laptops such as the PowerBook G4 or any 1394 Bus-Powered peripherals
4-Pin 1394a firewire I/O port non-powered, media only
SDI Input: Inter nally ter minated, standard SMPTE-259M with embedded audio standard
SMPTE 272M-A with audio at 48kHz synchronous with video
SDI Output: Standard SMPTE-259M with embedded audio standard SMPTE 272M-A
with audio at 48kHz synchronous with video
Timecode Input: Supports both DVITC, embedded in SDI data stream and separate ana-
log VITC
Timecode Output: Supports both DVITC, embedded in SDI data stream and separate
analog VITC
NOTE: See timecode conditions based on encode / decode below:
A. No deck connected. VITC signal present. Timecode from VITC is sent over
IEEE 1394
B. Deck present. VITC signal present. Timecode from VITC is sent over IEEE 1394
C. Deck present, no VITC.The timecode is initialized with the deck’s timecode.
Timecode counts for each new frame that is transmitted over DV. Slight skew
may occur between deck and LTM-DVBETA.
D. LTM-DVBETA timecode is re-synchronized with the deck when AVC_PLAY is
received
E. No deck or VITC. LTM_DVBETA maintains free run timecode.The TC is initial-
ized with zero and counts upward
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LTM-DVBETA User Manual
800-898-0759 • 845-339-9555 • 2000 Sterling Road • Mount Marion, NY 12456 • www.lairdtelemedia.com
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Power Switch
1
2
3
RDY: This LED illuminates when the processor boots and system is
initialized
DEC: This LED is the DV Decode LED. Active when DVD code is
enabled
SDI: This LED is active when a SDI framing signal is received in DV
code and DV decode mode
Decode / Encode Switch:This switch is used to select DV operational
mode of the LTM-DVBETA
In Decode mode the DEC LED illuminates which indicates the operational mode
NOTE: In DV Encode mode the DEC LED shuts off
RS422 Machine Control Port: Connect the RS422 por t of your VTR
device to this port which provides full Sony machine control over
IEEE1394 firewire
4
5
System Programming Dip Switch (See chart on next page)
1
2
3
4
5
FRONT PANEL
LAYOUT
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LTM-DVBETA User Manual
800-898-0759 • 845-339-9555 • 2000 Sterling Road • Mount Marion, NY 12456 • www.lairdtelemedia.com
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SYSTEM PROGRAMMING DIP SWITCH CONFIGURATION CHART
4 pos. DIP
Description
SW1
SW2
SW3
SW4
Audio Group Selection
Audio Group Selection
Audio Channel Pair Selection
DVITC / VITC Selection
SW1 and SW2 determine the audio group used in embedding or de-embedding
SW1 SW2
Audio Group
ON ON
OFF ON
ON OFF
OFF OFF
1
2
3
4
SW3 determines audio group channel pair selected for DV encode / decode
Channel 1 (left) and Channel 2 (right)
Channel 3 (left) and Channel 4 (right)
ON
OFF
SW4 determines the use of DVITC or VITC timecode
ON
OFF
VITC
DVITC
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LTM-DVBETA User Manual
800-898-0759 • 845-339-9555 • 2000 Sterling Road • Mount Marion, NY 12456 • www.lairdtelemedia.com
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SAMPLE S
YSTEM SET-UP
SCENARIO
Beta SX Deck
LTM-DVBETA
Laptop
Computer
SDI Input
SDI Output
IEEE 1394
Firewire
RS422
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NOTES
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2000 Sterling Road • Box 720
Mount Marion, NY 12456
800-898-0759 • 845-339-9555
Fax: 845-339-0231
www.lairdtelemedia.com
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