Hamlet STEREO SCOPE 503 EM, 503 EM Operator's Handbook Manual

STEREO SCOPE 503 EM

SERIAL DIGITAL/AUDIO MONITOR

OPERATOR'S HANDBOOK

This handbook contains proprietary information of Hamlet Video International Limited and may not be copied in whole or in part nor its contents disclosed to any third parties without the express written consent of the company.

Hamlet Video International Limited Maple House 11 Corinium Business Centre Raans Road Amersham Bucks HP6 6FB England Main Line: +44 (0)1494 729 728 Fax Line: +44 (0)1494 723 237 Free phone (UK) 0500 625 525 E-mail: sales@hamlet.co.uk Web site: www.hamlet.co.uk

Hamlet Video International USA service center , Tecads Inc, 23 Del Padre St, Foothill Ranch, CA 92610, U.S.A. Tel: +1 (949) 597 1053, Fax: +1 (949) 597 1094. Toll Free Tel number: (866) 4 HAMLET E-mail: service@hamlet.us.com Web site: www.hamlet.us.com

IN CORRESPONDENCE CONCERNING THIS INSTRUMENT

PLEASE QUOTE THE SERIAL NUMBER PRINTED ON THE

LABEL AT THE REAR OF THE UNIT

CONTENTS

LIST OF FIGURES ............................................................................................................... 4

GENERAL INFORMATION ............................................................................................... 5

WARRANTY ...................................................................................................................................................5

SAFETY COMPLIANCE ................................................................................................................................ 6

FRONT AND BACK PANELS............................................................................................. 7

INSTALLATION................................................................................................................... 8

UNPACKING .................................................................................................................................................. 8

MOUNTING INSTRUCTIONS....................................................................................................................... 8

POWER REQUIREMENTS ............................................................................................................................8

SIGNAL AND CONTROL CONNECTIONS................................................................................................. 8

REMOTE CONTROL...................................................................................................................................... 8

CHECK-OUT FOR INITIAL USE .................................................................................................................. 8

OPERATING INSTRUCTIONS.......................................................................................... 9

OVERVIEW..................................................................................................................................................... 9

CONTROLS................................................................................................................................................... 10

DIGITAL ERROR DISPLAY........................................................................................................................ 11

REMOTE CONTROL.................................................................................................................................... 12

CALIBRATION AND SETTINGS ....................................................................................14

TECHNICAL SPECIFICATION....................................................................................... 15

SERIAL DIGITAL BASICS............................................................................................... 16

DIGITAL ERROR DETECTION OVERVIEW .............................................................. 17

EMBEDDED AUDIO OVERVIEW .................................................................................. 18

USEFUL WEBSITES .......................................................................................................... 22

CONTACT DETAILS AND CUSTOMER SUPPORT.................................................... 22

LIST OF FIGURES

Fig 1 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Fig 2 Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Fig 3 Serial Digital Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Fig 4 625 Field Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Fig 5 525 Field Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

GENERAL INFORMATION

WARRANTY

This product is manufactured by Hamlet Video International Ltd and is warranted to be free from defects in components and factory workmanship under normal use and service for a period of one year from the date of purchase.

FREE EXTENDED WARRANTY

The warranty period can be extended to two years by registering the instrument on the Hamlet web site

http://www.hamlet.co.uk/serv.html

TERMS AND CONDITIONS

During the warranty period, Hamlet Video International Ltd will undertake to repair or at its option, replace this product at no charge to its owner when failing to perform as specified, provided the unit is returned shipping prepaid, to the factory or authorised service facility.

No other warranty is expressed or implied. Warranty shall not be applicable and be void when this product is subjected to:

1. Repair work or alteration by persons other than those authorised by Hamlet Video International Ltd in such a manner as to injure the performance, stability, reliability or safety of this product.

2. Misuse, negligence, accident, act of God, war or civil insurrection.

3. Connection, installation, adjustment or use otherwise than in accordance with the

instructions in this manual.

Hamlet Video International Ltd reserves the right to alter specifications without notice. This warranty does not affect the statutory rights of the UK customer.

GENERAL INFORMATION

SAFETY COMPLIANCE

This product is manufactured and tested to comply with:

BS EN 61010-1 : 1993

Safety requirements for electrical equipment for measurement, control and laboratory use.

EMC COMPLIANCE

We: HAMLET VIDEO INTERNATIONAL LTD MAPLE HOUSE

11 CORINIUM BUSINESS CENTRE RAANS ROAD AMERSHAM BUCKS HP6 6FB ENGLAND

declare under our sole responsibility that the product

HAMLET 503EM

to which this declaration relates are in conformity with the following standards:

EN50081-1 Generic emissions standard for light industrial applications. EN50082-1 Generic immunity standard for light industrial applications.

following the provisions of EU EMC directives 89/336/EEC and 92/31/EEC.

NOTE. During the EMC certification of this product, shielded cables were used. We recommend that they be used in operation.

FRONT AND BACK PANELS

INSTALLATION

UNPACKING

The Hamlet 503EM is shipped to you from the factory in a specially constructed packing case. Exercise caution when unpacking the device to prevent damage to the case finish. Examine the unit carefully inside and out for damage which may have occurred during shipment. Please retain the packing for use in the unlikely event that the unit has to be returned for repair.

MOUNTING INSTRUCTIONS

The 503EM is designed for desktop operation, or to fit into a standard 19 inch equipment rack, where it occupies only ½ width and 1U of height. Rack mounting kits are available. The unit in itself generates little heat and does not need any forced ventilation, but heat generated from other units should not cause the case temperature to rise above 60 deg.C

POWER REQUIREMENTS

Mains supplies of 110V at 60Hz, 230V at 50Hz or 12V DC are all suitable. The AC voltage required should be specified when ordering. Due to the use of a switching supply regulator, a wide variation of +/- 15% in the above levels is acceptable.

SIGNAL AND CONTROL CONNECTIONS

Video input and output cable connections are all made on to 75 ohm BNC. sockets and AES/EBU audio to 3 pin XLR sockets on the rear panel. To utilise all of the functions of the unit, the Y, U, V and CST outputs, serial digital input and active loop and AES/EBU audio input should all be connected.

REMOTE CONTROL

This is available via the rear 9 pin D RS232 socket. Software is available to control the unit from a virtual instrument panel on any pc.

CHECK-OUT FOR INITIAL USE

After installation as above, apply power to the unit and operate each control in turn, verifying the response is correct as described in the operating instructions.

OPERATING INSTRUCTIONS

OVERVIEW

The Hamlet 503EM is a half rack width, 1U high unit which accepts two channels of CCIR 601 (SMPTE 259M) SDI digital video and converts this to full CCIR quality analogue video, either YUV or GBR for output to a monitor. There is an additional output, which can be specified as a composite encoded output or re-clocked SDI input.

The unit can be operated free standing or mounted in a standard 19" rack, on its own or with another half width unit using optional rack mounting hardware. It operates from 110V or 230V AC mains or 12V dc, using only 10VA of power.

Two coloured audio bar graphs are produced, one on the left side of the screen and the other on the right. They each display a stereo pair (L and R channels). They display embedded audio or optionally external AES/EBU digital audio as selected on the front panel.. The embedded audio group can be selected internally. Audio scales can be set to Digital or Option, this toggles between BBC type 2 and Nordic for European units and offers VU scales in USA and Asia pacific.

An in-vision display is produced of the input serial digital parameters. These include CRC code and errors, signal strength and jitter, missing/illegal codes, gamut errors etc.

OPERATING INSTRUCTIONS

CONTROLS

ERR ON

Toggles the digital error display box on and off .

ERR RST Resets the digital error counters.

CH 1/2 ON Selects the stereo pair display. Toggles between pair 1 (left of screen), pair 2(right of screen) and both displays on.

EMB-AES/EBU Toggles the audio source between audio embedded in the video, external AES/EBU digital audio and displays off.

MIX Allows the input video to be seen in the background of the displays. There is an internal adjustment for transparency level.

SCALE KNOB Controls the brightness of the internal electronic graticules.

PEAK HOLD The unit has a peak-hold facility for the audio bars. This button toggles the hold time between OFF, 1, 2 and 4 seconds.

DIG Sets the audio scale to the standard PPM digital scale, 0 to -50db. The standard zero level lineup is -18db on this scale.

OPTION Toggles the audio scale between BBC type 2 (0 to 7) and Nordic (+12 to -12).

SDI 1/2 Selects SDI inputs 1 or 2. The unselected inputs are always terminated in 75 ohms. The SDI re-clocked output follows the input selector.

OPERATING INSTRUCTIONS

DIGITAL ERROR DISPLAY

ST The signal strength bar is an indication of cable length. It is marked at full and at the 300 metre knee point.

JT The jitter bar shows the data jitter level, often due to re-clocking of a low level or noisy signal. It is marked at the zero and knee points.

CR Displays the number of CRC (Cyclic Redundancy Check) errors, also known as EDH (Error Detection and Handling). The errors can be selected to cover the full field including auxiliary data packets or more usually active picture area only. There is an internal switch for this. The counter counts from 0 to 99 errors and may be reset at any time by pressing the front panel ERR RST button.

To the right of the CR display are 4 digits representing the checksum of the last frame, full frame or active picture as selected. For a stationary test card, this will be a fixed number and is a useful diagnostic aid when the CRC/EDH word of the test card is known. For moving pictures, the checksum will change with every frame. Note: CRC/EDH depends on a data packet being sent by the originating equipment. If the signal source does not support CRC/EDH, ---- is displayed in the CRC area.

CD Displays the number of code errors. These are due to missing or corrupted TRS pulses (EAV or SAV). The counter operates as above.

DA Displays the number of digital audio errors. The signal source can be either embedded audio or AES/EBU input, selected by an internal switch. If embedded audio is chosen and no embedded audio packets are present, -- is displayed. The counter operates as above.

GM Displays the number of gamut errors. These occur if the digital luminance signal exceeds peak white or falls below minimum black. Also if the digital colour signals exceed peak positive or negative. The counter operates as above.

IL Displays the number of illegal value errors. Illegal values are 3FF and 000. The counter operates as above. The number of quantising bits in the data system is also detected and shown in the error display area as 8 or 10.

OPERATING INSTRUCTIONS

REMOTE CONTROL

FOR MORE DETAILED INFORMATION, PLEASE READ THE DISC HELP FILE.

The software package is for remote control of the Hamlet 503EM from a personal computer via an RS 232 serial link. It is recommended that the disk be copied to your hard disk drive and then kept safely as a backup. Please note this version is for a Microsoft Windows™ Environment. Microsoft Windows 95™ and DOS versions are available from the factory if required. Before installation of the application please ensure that your system is able to run it correctly.

HARDWARE REQUIRED IBM PC or 100% compatible personal computer with at least 1M Byte of RAM. A VGA type colour monitor. A Hard Disk Drive. An RS-232 Serial Port for connection to the 503EM. A Mouse. A 3.5" Floppy Disk Drive .

SOFTWARE REQUIRED MS DOS™ Version 3.3 or greater with Microsoft Windows™ Version 3.0 or greater. Hamlet Video 503EM software (disk supplied). The software consists of the following files:

503EM.EXE Executable file VBRUN300.DLL Runtime file 503EM.HLP HELP file. This is a text file which maybe printed out or called from

the HELP window while running the application. 503EM.SET Setup file of 4 bytes. INSTALL.EXE Installs the software on your hard disk.

INSTALLATION FROM DOS: To install the software on your hard disk first ensure the computer is in DOS, fit the application disk in the floppy drive,

Type A: to give the A:> prompt then type INSTALL <enter>

This will create a directory on your hard disk called C:\HAMLET then the application files will be copied to that directory. Note: The files are not protected or compressed so they may be manually copied to any directory required. The INSTALL program also sets up the serial port

OPERATING INSTRUCTIONS

TO RUN THE SOFTWARE FROM WINDOWS™

On first use of the software, a group window and application file are needed.

To Create a Group Window, start Windows in the usual manner, e.g. Type WIN <enter> From the Program Manager Window select: FILE NEW. Select Program Group In the description box type: HAMLET. Select OK To Add the Application file, in the Group Window, select FILE NEW, select Program Item In the Description box type 503EM In the Command box type the full path name of the application: i.e. C:\HAMLET\503EM.EXE Select OK.

The software is now installed on your hard disk and can be called from the Windows Program Manager in the normal way. i.e. double click on the HAMLET Group icon, then double click on the AUDIO icon. The first time the software is run it may be necessary to set the COM PORT option in the SETTINGS window. Remember to save it before you return to the main panel window.

OPERATION From the Hamlet Program Manager, double click on the 503EM icon.

BUTTONS Use the mouse to point and click the required buttons.

VARIABLE CONTROLS These use arrows on the computer panel and can be operated in 2 ways.

1) Point the mouse at the arrow of a slider control and hold down the left mouse button, this causes the control to increment or decrement slowly.

2) Point the mouse at the arrow of a slider control and double-click the left mouse button, this causes the preset function to operate.

THE OPTIONS MENU.

BEEP ON/OFF.

When each control is pressed the computer issues a beep, this may be disabled if not required by clicking the "beep off" button. THE HELP WINDOW Click on HELP for the information text, which can be scrolled with the mouse on the "vertical scroll bar" on the right of the window or from the keyboard cursor or the PgUp and PgDn keys. TO QUIT THE PROGRAM Double click on the "control menu box" (top left window button)

CALIBRATION AND SETTINGS

CALIBRATION

Isolate the mains supply before removing the top cover!

YUV output levels

With 100% colour bars, adjust R14 for 700mV video and R81 for 300mV sync. Adjust R15 (U) and R16 (V) for 700mV pp outputs.

Adjust R59 for green audio bar Y level of 411mV.

Select MIX and adjust R61,R65 and R66 for desired mix levels.

For composite subcarrier lock, set C69 (PAL) and C68 (NTSC) for 1.5V on R118.

SETTINGS

PL6 selects YUV or RGB outputs.

JP4 selects 'syncs on green' output.

Other jumpers are used for initial testing purposes and should not be changed.

SW1- (1) The CRC/EDH can be set to full field (ON) or active picture (OFF)

SW1- (2&3) EMBEDDED AUDIO GROUP 2 3

1 ON ON 2 OFF ON 3 ON OFF 4 OFF OFF

SW1- (4) Not used.

TECHNICAL SPECIFICATION

DISPLAY

The audio bar graphs are burnt into the decoded video signal. Channels 1 and 2 are displayed on the left side. Channels 3 and 4 are displayed on the right side. Embedded audio groups 1 to 4 are selected by an internal switch.

SIGNAL CONNECTIONS

Audio 3 pin XLR female socket and passive loop per AES/EBU channel. Balanced input, impedance 470 ohms. SDI in 75 ohm BNC socket. Loop Re-clocked active loop output. 75 ohm BNC socket. Out YUV/RGB and composite outputs to monitor, 1 Volt to 75 ohms.

DIGITAL DECODER

Input: SMPTE 259M, ITU-R BT.601/656 serial component. 800mV pp +/- 10% auto equalised to 300 metres. Output Y,U,V, +/-1db to 5.5MHz. Oversampling digital filter for CCIR 601 compatibility.

AUDIO CHARACTERISTICS

Digital 0 to -50db scale with PPM characteristics.

Option Toggles between BS5428 type 2a meter (1 to 7) and Nordic type 1 meter (+12 to -12)

POWER REQUIREMENTS

AC: 105V-120V A.C. at 48Hz to 66Hz @ 8VA, with 100ma slow T fuse. AC: 210V-250V A.C. at 48Hz to 66Hz @ 8VA, with 100ma slow T fuse. DC: 7V-14V D.C.@ 0.4 amps.

ENVIRONMENT Indoor use, 5 to 45 deg.C. ambient to 2,000m. Max humidity 80% to 31 deg.C decreasing to 50% at 40 deg.C. Overvoltage category 2. Pollution degree 1. WEIGHT

1.85Kg.

SERIAL DIGITAL BASICS

625 and 525 digital component video is produced by applying a 4:2:2 sampling structure to the analog signal. This process is defined by a sub-set of international standards ITU-R BT.601 and BT.656. (these were formerly known as CCIR-601 and CCIR-656. The label 'CCIR601' is commonly applied to digital video coded in this manner.)

The luminance (Y) component is sampled at 13.5 MHz, and the colour difference components (U and V) are both sampled at 6.75 MHz. With 10 bit quantisation, this results in a data stream of 10 bit words at a clock frequency of 27 MHz. If the signal source uses 8 bit quantisation, 10 bit data is used with the two least significant bits of each sample code set to binary zero. This is to maintain the same data rate.

The quantizing levels employed in the analog to digital conversion are set to give 66.4mV headroom above peak white and 51.1mV below black. Coded U and V signals have 50mV above and below their normal maximum and minimum excursions.

The synchronisation pulses are discarded in the coding process, and are replaced by Timing Reference Signals (TRS), which are inserted into the data stream to serve the same purpose. Two TRS's are used to synchronise the data stream, EAV (End of Active Video) and SAV (Start of Active Video). These are placed at the beginning and end of the horizontal video blanking period. See fig 3.

Each TRS consists of 4 words:

1) 3ff hex i.e. all '1's

2) 000 hex i.e. all '0's

3) 000 hex i.e. all '0's

4) XYZ, which determines the type of TRS pulse:

XYZ: Bit 9: always '1' Bit 8: 0 = frame 1 1 = frame 2 Bit 7: 0 = normal 1 = field blanking Bit 6: 0 = SAV 1 = EAV Bit 5: Bits used for Hamming correction. Bit 4: Bits used for Hamming correction. Bit 3: Bits used for Hamming correction. Bit 2: Bits used for Hamming correction. Bit 1: Always '0' Bit 0: Always '0'

SERIAL DIGITAL BASICS

The period between EAV and SAV is not used by normal video and is available for other purposes e.g.: error checking, timecodes or embedded audio.

Illegal Values: The values 0 and 3FF hex are used solely by TRS pulses (EAV and SAV) they must not appear anywhere in the active video area.

Out of Gamut: Values apart from the illegal values, which should not be used. Luminance is defined as being between peak white, 700mV 3AC, hex and black, 0mV 040 hex. Chroma is defined as being between max positive, 350mV 3C0, hex and max negative, -350mV 040 hex. The values above and below these are termed out of gamut.

The data is serialised using an NRZ (None Return to Zero) code to produce a 270 Mb/s signal. This coding method removes any low frequency component and is insensitive to polarity. The data has to be scrambled first to avoid the possible transmission of all '0's. This data is output at 800mV p-p to normal 75 ohm video coaxial cable.

Due to the high frequencies, the cable losses are quite high, typically 10dB per 100 metres at 270 MHz. To allow acceptable cable lengths, automatic cable equalises are used at the receiver, which usually allow up to 300 metres of cable to be used. It is important that standard cable is used, otherwise the equaliser will not compensate correctly.

Suitable cable is: PSF 2/3 BELDEN 8281 F&G 1.0/6.6

DIGITAL ERROR DETECTION OVERVIEW

In order to check if the digital video signal has been received correctly a Cyclic Redundancy Check (CRC) can be made on each frame in the generating equipment, this four digit number is then placed in a 'packet' and put in the EAV-SAV space of one line of each field.

At the receiving equipment the incoming video field also has a Cyclic Redundancy Check number calculated, this value is then compared with the 4 digit number sent in the packet. If the two numbers are not identical an error has occurred between transmission and reception of the signal.

SERIAL DIGITAL BASICS

This type of error detection is known as Error Detection and Handling or EDH and is defined by SMPTE RP165. In practice two check sums are sent per frame, one for the active video period and one for the full frame. A typical packet consists of:

The Header: (000, 3FF, 3FF) This always precedes an EDH packet.

Data ID: (1F4) Block Number: (200) Data Count: This contains the number of words that follow. Active picture crc: 3 words Full-field crc 3 words Error flags: 3 words Reserved: 7 words Check Sum: This is used to test for transmission errors.

EMBEDDED AUDIO OVERVIEW

The period between the EAV and SAV markers can be used to send embedded digital audio signals. This is known as SMPTE 272M. Up to 16 separate audio signals may be sent in a single video channel. These are organised as four GROUPS of four signals, the four signals are often two stereo pairs. Typically only one group will be used, giving two stereo pairs of audio. The audio data is digitised in the sending equipment to 20 bits of resolution, usually at a 48 KHz sample rate. Often only 16 bits are used in practice. The digitised data is arranged in packets which are placed in the EAV-SAV space. A typical packet consists of:

The Header: (000, 3FF, 3FF) This always precedes an audio packet. Data ID: This contains the Audio Group number. Block Number: AES blocks have 192 'frames' of audio data Data Count: This contains the number of words that follow. Audio Sample: Audio Sample: Audio Sample: Audio Sample: Check Sum: This is used to test for transmission errors.

Each audio sample consists of a sample of all four audio signals, e.g.: Channel 1 left, Channel 1 right, Channel 2 left, Channel 2 right. Each signal requires 3 words to hold all 20 bits data, thus each audio sample has 12 words in it. Typically 3 or 4 audio samples are sent in each EAV-SAV period. As with the video signal, words which consist of all '1's or all '0's are not allowed.

SERIAL DIGITAL BASICS

Fig 3.

SERIAL DIGITAL BASICS

SD SDI Field Blanking – 625

Fig 4 .

SERIAL DIGITAL BASICS

SD SDI Field Blanking – 525

Fig 5.

USEFUL WEBSITES

HAMLET www.hamlet.co.uk

HAMLET (USA) www.hamlet.us.com

SMPTE www.smpte.org Society of Motion Picture Television

Engineers

DIN www.din.de German Standards Institute

EBU www.ebu.ch European Broadcasting Union

AES www.aes.org Audio Engineering Society

ITU www.itu.int International Telecommunication Union

CONTACT DETAILS AND CUSTOMER SUPPORT

For any form of assistance in maintaining your Stereo Scope, please contact:

In correspondence concerning this instrument, please quote the serial number, which you will

find printed on the label at the back of the unit.

Hamlet STEREO SCOPE 503 EM, 503 EM Operator's Handbook Manual

Specifications and Main Features

Frequently Asked Questions

User Manual