Broadcast Showman 1000 User manual

Showman 1000
Multi-Standard Analogue TV
Demodulator
Handbook Provisional Version 0.3

Multi-Standard Analogue TV Demodulator Showman 1000
2008 dB Broadcast Ltd ii Provisional Version 0.3
dB Broadcast Ltd has made every effort to ensure the accuracy of information contained within this
document which is nevertheless supplied for information purposes only and does not constitute any
form of warranty or guarantee.
All trademarks acknowledged.
The information in this document is subject to change without notice.
dB Broadcast Ltd
Registered Office:
Kestrel House
Sedgeway Business Park
Witchford
Ely
Cambridgeshire
UK
CB6 2HY
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.dbbroadcast.co.uk
Registered in England No. 2709677

Multi-Standard Analogue TV Demodulator Showman 1000
2008 dB Broadcast Ltd iii Provisional Version 0.3
D
Do oc cu um me en nt th hi is st to or ry y
Date of first publication 30th May 2008
Current issue and date Provisional Version 0.3 / 6th June 2008
Firmware versions

2008 dB Broadcast Ltd iv Provisional Version 0.3
C
Co on nt te en nt ts s
DOCUMENT HISTORY III
INTRODUCTION 6
The Showman 1000 Multi-Standard Analogue TV Demodulator 6
Applications 6
Features 7
GENERAL SAFETY SUMMARY 8
INSTALLATION 10
Electrical Installation 10
Installation within the UK 11
Installation outside the UK 11
Mechanical Installation 11
Rear Panel Connectors 12
RS232 serial control port 13
Reset/Status port 13
Audio outputs – phase connections 15
GETTING STARTED 16
Using the front control panel 16
OPERATION 21
TOP-LEVEL MONITORING 21
MAIN MENUS 23
Receiver Options Menu 24
Audio Options Menu 30
Configuration Options Menu 34
Headphones Options Menu 38
System Options Menu 39
Status Options Menu 42
REMOTE OPERATION 44
Serial port protocol 44
Command syntax 45
Remote Command Descriptions 46
SYSTEM DEFAULTS 59
CHANNEL TABLES 60

Multi-Standard Analogue TV Demodulator Showman 1000
2008 dB Broadcast Ltd v Provisional Version 0.3
APPENDIX F: CHANNEL TABLES 60
SPECIFICATION 68
ORDERING INFORMATION 71

Multi-Standard Analogue TV Demodulator Showman 1000
2008 dB Broadcast Ltd 6 Provisional Version 0.3
I
In nt tr ro od du uc ct ti io on n
The Showman 1000 Multi-Standard Analogue TV Demodulator
The Showman 1000 Off Air Receiver from dB Broadcast is a multistandard (PAL / NTSC /
SECAM) analogue TV demodulator for professional broadcast applications and is capable of
receiving RF signals from most terrestrial or cable analogue broadcast TV standards.
Figure 1: The Showman 1000 Multi-Standard Analogue TV Demodulator
Two Showman versions are available:
A basic multi-standard S-Variant
An enhanced P-Variant with alarm/monitoring and IF I/O
The P-Variant has added IF input and output capability along with monitoring and alarm
functions – including a Status Log facility that can time and date stamp various alarm events
for later analysis. The P-Variant is also capable, when receiving BTSC audio (Standard M),
of providing simultaneous outputs of both Stereo and SAP (Second Audio Program).
Demodulation is to base-band colour composite video and stereo audio (where available).
The optional IF input and IF output is on 38.9MHz vision carrier frequency for all standards*.
Demodulator functions may be controlled either via the front panel LCD (Liquid Crystal
Display) and key menu system or via an RS232 Serial Port.
Note: *A single standard Showman 1000 Demodulator, dedicated to 45.75MHz IF frequency
is also available. (N-variant, not covered by this manual).
Applications
Fixed Monitoring / MCR - Monitoring of outgoing TV signals
Analogue Cable head ends - Off air reception prior to modulation on to cable
Digital TV head ends - Off air reception of analogue services prior to MPEG encoding
Outside Broadcast monitoring - monitoring live programs and own
Transmission monitoring · News Gathering in fixed or mobile situations
Analogue TV Transmitter monitoring

Multi-Standard Analogue TV Demodulator Showman 1000 Introduction
2008 dB Broadcast Ltd 7 Provisional Version 0.3
Features
Over 20 pre-installed country/region tables
Multi-Standard - B/G, I, D/K, L’/L, M/N
Video Systems - PAL, SECAM, NTSC
Audio Systems - NICAM, FM-Stereo (A2 & EIA-J) BTSC
Direct keying of frequency
99 program memory
Headphone socket on front panel
Dual composite video outputs
Dual audio outputs
Adjustable audio, video and chrominance levels
RS232 Port - for external local control and software upgrades
LCD screen display- 2 Line x 20 Characters (White on Blue)
Compact 1RU solution
Optional features
IF Input/Output option
Alarm and logging option
Second Audio Processor option
Real Time Clock option - for time stamping alarm events
Reset/Status Port option- local alarm monitoring and reset input

Multi-Standard Analogue TV Demodulator Showman 1000 General safety summary
2008 dB Broadcast Ltd 8 Provisional Version 0.3
G
Ge en ne er ra al ls sa af fe et ty ys su um mm ma ar ry y
Precautions to avoid personal injury, fire or product damage.
Every care has been taken in the design, manufacture, assembly and testing of this product
to obviate health and safety risks to personnel and to prevent fire or other hazards. However,
please review the following safety precautions for continued protection.
General use. This product must only be used as specified in this manual. Failure to follow
any ratings or directions for use may impair the protection provided.
On receipt of the product. Verify there is no damage and that all accessories are present.
Suspected damage or failure. Do not operate the product. Have it inspected by qualified
service personnel or contact dB Broadcast or an authorised distributor.
Operating environment. The unit is for indoor use only. See the Specification chapter for
further environmental, physical, certification and safety information.
Do not operate in wet or damp conditions.
Do not operate in an explosive atmosphere.
Power cable. Use only a power cable specified for this product and certified safe for the
country of use.
Do Not Remove Covers. There are no user serviceable parts within the case. Qualified
personnel only should perform any servicing necessary.
Grounding. This product must be grounded. Before making any signal connections, ensure
that the product is grounded. The product is grounded through the power cable. To avoid
electric shock under fault conditions, the protective grounding conductor within the power
cable must be connected to an earth terminal of the building in which the product is located.
Bonding. A Ground Bonding (Earth) Terminal is located on the rear panel of the unit for
equipotential bonding with other equipment or racking where required.
This Terminal is identified thus :
Mains supply voltage and fuse ratings. See the Specification chapter. All ratings must be
observed.
Cuts and abrasions. When handling the equipment, guard against cuts or abrasions from
metal parts of the case or components.

Multi-Standard Analogue TV Demodulator Showman 1000 General safety summary
2008 dB Broadcast Ltd 9 Provisional Version 0.3
CAUTION. Caution statements identify conditions or practices that could result in damage to
this product or other property.
Toxic content. Unwanted or obsolete components must be disposed of safely as some may
release toxic vapours if incinerated.
In case of difficulty. Please refer to dB Broadcast.
Lithium battery
A lithium battery maybe located in this product to provide back up for a real-time clock. In
normal operation this battery has a life in excess of 5 years. If the real-time clock’s operation
becomes erratic when cycling the power, then the battery may need replacing. Battery
replacement should only be performed by a ‘skilled and competent technician’, or by
returning to db Broadcast for repair.
CAUTION: Danger of explosion if battery is incorrectly replaced.
Product damage precautions
Take anti-static precautions
Since this unit contains exposed PCB and electronic components, ensure proper anti-static
precautions are observed when handing this equipment.
Provide proper ventilation
To prevent product overheating, provide proper ventilation.
Do not operate with suspected failures
If you suspect there is damage to this product, have it inspected by qualified service
personnel.
There are no user serviceable parts
Return to dB Broadcast or an authorized distributor for repair/service.
Installation
On receipt of the unit, open the box and verify that the unit and all accessory items included.
Save the shipping carton and packing materials in case it becomes necessary to ship the unit
to dB Broadcast for service or repair.

Multi-Standard Analogue TV Demodulator Showman 1000 Installation
2008 dB Broadcast Ltd 10 Provisional Version 0.3
I
In ns st ta al ll la at ti io on n
Before proceeding with product installation, please read the Safety section at the front of
this manual.
Electrical Installation
The unit is designed to operate from a single-phase power source having one of its current-
carrying conductors at or near earth ground (the neutral conductor). Only the line conductor
is fused* for over-current protection.
Systems that have both current-carrying conductors live with respect to ground (such as
phase-to-phase on multiphase systems) must not be used as power sources. A protective
ground connection by way of the grounding conductor in the power cord is essential for safe
operation.
The mains outlets intended to supply the unit should either be close to the unit and easily
accessible to the user or the unit mains inlet should be easily accessible in the final
installation.
Correct mains polarity must always be observed. Ensure all mains connections are
connected correctly.
Fuse Rating*: See Specification
For continued protection against risk of fire, replace only with the same type and rating of
fuse.
Pour ne pas compromettre la protection contre les risques d’incendie, remplacer par un
fusible de même type et de mêmes caractéristiques nominales.