R&S®NM8200 Family of VHF Transmitters

Air-cooled transmitters for analog and digital TV

This is a discontinued product
Please note the following successor product(s):
  • Overview

Key Facts

  • 750 W to 3 kW output power for analog TV
  • Frequency range from 170 MHz to 254 MHz

Brief Description

The R&S®NM8200 family of air-cooled transmitters is designed for a wide range of TV broadcast standards. These include analog TV standards (B/G, D/K, M/N, I), color coding standards (SECAM, PAL, NTSC) and sound coding standards (FM mono, IRT dual-sound/stereo and NICAM).

Features

  • R&S®SX800 multistandard exciter for digital or analog signal processing
  • Air-cooled broadband R&S®VM8350A1 power amplifier

Specifications

Frequency range 170 MHz to 254 MHz
Power supply 3 × 400 V AC ± 15 %, three-phase operation;
47 Hz to 63 Hz

Key Facts

  • 750 W to 3 kW output power for analog TV
  • Frequency range from 170 MHz to 254 MHz

Brief Description

The R&S®NM8200 family of air-cooled transmitters is designed for a wide range of TV broadcast standards. These include analog TV standards (B/G, D/K, M/N, I), color coding standards (SECAM, PAL, NTSC) and sound coding standards (FM mono, IRT dual-sound/stereo and NICAM). The use of VMOS transistor based amplifiers provides high output power in a compact format.

Features & Benefits

  • R&S®SX800 multistandard exciter for digital or analog signal processing
    • Exciter can be converted from analog to digital standards at any time
    • Various redundancy concepts
    • Modular design with plug-ins simplifies servicing
    • MIP decoder for automatic delay compensation in singlefrequency networks
    • Digital signal processing for maximum stability and easy precorrection
    • Easy software upgrade for DVB-H
  • Air-cooled broadband R&S®VM8350A1 power amplifier
    • Suitable for analog and digital signals without any adjustments
    • With innovative amplifier controller, identical for all sound and TV transmitters in the R&S®Nx8000 family
    • Output power control results in long transistor life
    • Self-monitioring and self-protecting amplifier modules
    • MOSFET technology based
    • Easy replacement of amplifier modules during operation (hot swapping)
  • Innovative R&S®NetCCU®800 transmitter control unit
    • Straightforward display of current transmitter status on color screen
    • Remote transmitter monitoring and control via SNMP and HTTP interface
    • Remote and local access to all parameters relevant for diagnostics
    • Detailed diagnostic capabilities through use of CAN bus
    • Takes up only two height units
  • Transmitter rack with integrated cooling
    • 19" rack (31.5 inches deep) for all power classes
    • Up to six amplifier modules in one rack
    • Houses two built-in fans in active standby
    • Various air ducting configurations
    • Efficient cooling reduces cooling system's power consumption and noise levels

Specifications

Specifications common to the R&S®NM8200 and R&S®NW8200
Frequency range 170 MHz to 254 MHz
Power supply 3 × 400 V AC ± 15 %, three-phase operation;
47 Hz to 63 Hz
Maximum installation altitude 2000 m above sea level (over 2000 m on request)
Operating temperature range +1 °C to +45 °C
Permissible relative humidity 95 %, without condensation
Dimensions W × H × D 600 mm × 2000 mm × 800 mm
(23.6 in × 78.7 in × 31.5 in)
RF connector EIA 1 5/8"
Electromagnetic immunity 1) to fast transients and bursts, in line with IEC 61000-4-4 < 2 kV (power feed)
< 1 kV (signal inputs)
to surges, in line with IEC 61000-4-5 symmetrical < 1 kV (e.g. L1-L2)
unsymmetrical < 2 kV (e.g. L1-N)
Synchronization
Reference frequency 10 MHz, 0.1 V to 5 V (Vpp) or TTL, BNC
Reference pulse 1 Hz, TTL, BNC
Local and remote control
Local control color display and keys on transmitter front side via graphical user interface (GUI)
RJ-45 via PC using standard web browser
Remote control RJ-45 IEC 864-2 via Ethernet, standard
RJ-45 network management interface (web server and/or SNMP agent), optional
parallel remote control interface floating contacts for messages and commands, optional
bit bus bus interface in line with IEC 864-2, optional

1) With built-in line-side overvoltage protection; more stringent requirements are to be covered by additonal on-site measures

R&S®NM8200 for analog TV
NM8201 NM8202 NM8203 NM8204
Number of amplifiers 1 2 3 4
RF output power 750 W 1500 W 2250 W 3000 W
Air flow rate 8.5 m3/min 8.5 m3/min 17 m3/min 17 m3/min
Reference frequency 10 MHz, 0.1 V to 5 V (Vpp) or TTL, BNC
TV standards B, G, D, K, M, N, I
Color transmission PAL, NTSC, SECAM
Inputs (video) 2 × video
Inputs (audio) without NICAM: 2 × AF
with NICAM: 2 × AF + 1 × AF for third language
standard M/N: 1 × AF + 1 × BTSC (BNC)
Sound transmission IRT dual-sound coding; FM single-sound and NICAM 728 (–13 dB/–20 dB), optional;
FM single-sound (–10 dB); BTSC coder input

To comply with the applicable standards and limit values for the suppression of out-of-band emissions (and in the case of digital standards, also for the required shoulder distance), the transmitter may only be operated with suitable filters at the RF output.

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