DISCONTINUED PRODUCT

Introduction

The vsm LTC Time Sync is an interface between a longitudinal time code signal and a USB port. The LTC signal can be used to provide a PC or server with timecode synchronisation through the LTC. The LTC Time Sync unit comes with an additional video-sync input, which is currently not used to synchronize vsmStudio server with vTimeSync. The device accepts all LTC signals according SMPTE 12M (-1/-2)/EBU timecode standard. The interface supports PAL/NTSC-Standard, but no NTSC-Drop-Frame-Mode.

Features:

• 2 LTC time code input via SUB-D15 female for PAL/NTSC-Standard.
• 2 Serial RS232 port "output" via SUB-D9 female for redundancy application only.
• 2 USB ports via USB device connector for Interface with vTimeSync on vsm server.
• 2 video sync input (black burst) 75 Ohm via BNC.

Product Overview

vsmLTC Time Sync Unit Dual

	Number of ports	2 x LTC longitudinal timecode audio signal according to SMPTE 12M (-1/-2)
	Communication port	2 x USB
	Dimension	483mm x 43,7mm x 125,4mm (WxHxD):1RU
	Weight	approx. 1,4KG
	Power-Consumption	<10W
	Working-Environment	0°C-60°C non-condensing humidity

Operating Conditions

This device is built to be used in a non-condensing environment within a temperature range of 0-50°C. Under or overshooting this working temperature range may cause fast aging of components or even malfunction of the whole device.

Spillage of any liquids e.g. coffee, coke, water... onto/into the device may cause damage.

The storage temperature of the device must be within -20°C to 60°C with a maximum of 75% non-condensing relative humidity at 60°C @ 0VDC supply-voltage.

DO NOT throw, drop or bend the unit and make sure that there is no strong permanent mechanical pressure on any side of the housing at any time.

Before installing or using this device, always read and observe the Important Safety Instructions.

Preparing for Operation

All servers running vTimeSync (the synchronisation application for VSM Studio) will be shipped with pre-installed and pre-configured USB driver. If you need to install the USB driver please download the latest version here or contact our support team.

First properly install the USB driver and connect the LTC Time Sync unit to the server. If Windows has detected the LTC Time Sync unit go to "Device Manager/Ports (COM & LTP)/COM port number (LTC IF)". Find the Tab "Port Settings" and go to Advanced Settings. Now configure the LTC Time Sync unit USB port as the following, press "OK" and restart Windows if needed.

Now connect the LTC signal to the device. After ca. 30 seconds the device will show at the front status LEDs the LTC online state.
Open the "Gui.html" file in the vTimeSync installation folder or use this link to setup the COM Port for vTimeSync as following:

If the "Signal Source" LED turns green and the "Proxy Version" shows a valid Firmware Version, vTimeSync has established a valid connection to the LTC Time Sync unit. For further information about vTimeSync read the corresponding manual.

Technical Specifications

Status LEDs

Legend for the front status LED

Scheme	Nr	Color	Meaning
	L1	Green	Power/Ready
	L2	Yellow	Physical connection to PC established
	L3	Green	RTC available
	L4	Yellow	Backup source operation
	L5	Green	V-Sync Online
	L6	Green	LTC Online
	L7	Red	V-Sync Error
	L8	Red	LTC Error

Legend for the rear status LED's

1+2	Green + Green	Power good (internal regulator)
3+4	Green + Green	RX/TX indicator for USB port
5+6	Green + Green	RX/TX indicator for RS232 port
7+8	Red + Green	Video sync reference status, red: fail green: ok
9+10	Red + Green	LTC status information red: fail green: ok

Connectors

Power Connector

Connector for DC-supply: 4-Pin connector (MC 1,5/ 4-STF-3,81) locked with two screws. The connector is already mounted on the power-supply delivered with each vsmLTC interface.

Power Supply

(EN) Warning

Important: It is understood that only the external Power-Supply-Unit (PSU) provided by Lawo, and shipped with the specific vsm device, is used for operating the product.

To feed the device via the DC input it is mandatory to use a 12V power source that is certified as “SELV/LPS” (if certified according to 60950) or as “ES1/PS2(LPS)” (if certified according to 62368) “NEC Class 2” 12V power source. The UL mark is valid only with use of UL certified PSUs of categories QQGQ (UL 60950) or QQJQ (UL 62368). The supplied Lawo 12V PSU is compliant to these requirements.

(F) Avertissement

Important: Il est entendu que seul le bloc d'alimentation externe fourni par Lawo, et livré avec le dispositif vsm spécifique, est utilisé pour faire fonctionner le produit.

Pour alimenter l'appareil via l'entrée DC, il est obligatoire d'utiliser une source d'alimentation 12V conforme aux exigences «SELV / LPS» (si certifiée selon la norme IEC 60950) ou «ES1 / PS2 (LPS)» (si certifiée selon la norme IEC 62368) Source d'alimentation 12V “NEC Classe 2”. La marque UL est seulement valable quand l'alimentation elle-même est certifiée par UL dans les catégories QQGQ (norme UL 60950) ou QQJQ (norme UL 62368).  Le bloc d’alimentation Lawo 12V fourni avec l’équipement est conforme à ces exigences.

LTC

Sub-D15 female

The output-impedance of the LTC-generator should be as small as possible; the level is preferred to be adjustable. The LTC-interface input-level must be within SMPTE-restriction 12M:

SMPTE 12M-1995 < 50 W/1 - 2 Vpp (max. 0.5 - 4.5 Vpp), following EBU Tech. 3097-E < 30 W/0.5 - 4.5 Vpp

USB

USB device For interconnection with vTimeSync use enclosed "A" to "B" type USB cord only. A maximum USB-cable-length of 2.0m (6.5 feet) is permitted.

Serial Redundancy Interface

Sub-D9 male RS232 (EIA RS232D 2.1.7) For redundancy purposes of dual LTC-interface only. Only use provided redundancy-cable delivered with redundant unit.

REF Input/Blackburst

BNC 75 Ohm (PAL/NTSC/SECAM) The video-sync-input (REF-input) is an optional input only and is currently not used for time synchronisation. If this optional REF-Input is used, make sure to do proper wiring. Use video-cable (RG59) for interconnection only. Avoid long cabling-traces.