r&s®nm8500 vhf transmitter family for tv | 概览 -九游官网下载

flexible and efficient: a platform for the future

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  • 概览

key facts

  • multistandard platform for analog, digital and mobile tv
  • dvb-t2 capable
  • high energy efficiency reduces operating costs

brief description

the r&s®nm8500 is a multistandard platform for analog, digital and mobile tv that can be deployed throughout the world. the transmitters' compact design and high energy efficiency reduce infrastructure and life cycle costs.

features

  • a future-safe investment
  • always on the air
  • efficient and compact

specifications

modelle anzahl der r&s®vm602a1 verstärker
r&s®nm8503 3
r&s®nm8504 4
r&s®nm8508 8
r&s®nm8516 16

key facts

  • multistandard platform for analog, digital and mobile tv
  • dvb-t2 capable
  • high energy efficiency reduces operating costs
  • synergy with all transmitter families of the r&s®xx8000 generation
  • easy switchover from analog to digital tv

brief description

the nm8500 is a multistandard platform for analog, digital and mobile tv that can be deployed throughout the world. the transmitters' compact design and high energy efficiency reduce infrastructure and life cycle costs. the modular concept of the r&s®xx8000 transmitter generation across platforms yields a high degree of synergy with regard to spare parts inventory and operation.

the liquid-cooled transmitter family has been designed for high transmit power in vhf band iii. the r&s®nx8500 transmitters have an output power of up to 20 kw for analog tv. the coded orthogonal frequency division multiplexing (cofdm) tv standards dvb-t, dvb-t2, isdb-t/isdb-tb, dtmb as well as the dvb-h and mediaflo™ mobile tv standards are output with up to 7.8 kw. the maximum output power for the atsc standard and its mobile enhancement atsc mobile dtv is 11.5 kw. the transmitters can be accommodated in one or two 19" racks with a depth of 1200 mm. their small footprint enables them to be flexibly adapted to any site requirements. if requested, they can easily be switched over from analog to digital tv.

features & benefits

  • a future-safe investment
    • multistandard platform for analog, digital and mobiletv
    • cost reduction due to the cross-platform modular concept of the r&s®xx8000 transmitter generation
    • ready for the future
  • always on the air
    • reliable and effective liquid cooling
    • standby systems for all requirements
    • operational safety and optimum transmission quality
  • efficient and compact
    • energy efficiency reduces operating costs
    • reduction of infrastructure costs due to small footprint and compact system design

specifications

analog tv
configured as r&s® nm8503 nm8504 nm8508 nm8516
number of r&s®vm602a1 amplifiers 3 4 8 16
output power (sync peak) 1) 2) 4.0 kw 5.0 kw 10.0 kw 20.0 kw
rf output eia 1 5/8" eia 3 1/8"
dimension
(h x w x d)		 2200 mm x 600 mm x 1200 mm
(86.6 in x 23.6 in x 47.2 in)		 2200 mm x 1200 mm x 1200 mm
(86.6 in x 47.2 in x 47.2 in)

1) other output power ratings on request.
2) after the bandpass filter.

base unit
frequency range vhf band iii 170 mhz to 254 mhz
supply voltage   3 x 400 v ac ± 15%, 47 hz to 63 hz
three-phase current
max. installation height   2000 m above sea level
(> 2000 m on request)
operating temperature range   1°c to 45°c
relative humidity (max.)   95%, non-condensing
immunity 1) to fast transients and burst in line with iec61000-4-4 < 4 kv (ac supply)
< 1 kv (signal inputs)
  to surges in line with iec61000-4-5 symmetrical < 2 kv (e.g. l1-l2)
unsymmetrical < 4 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
operation
display, keypad and status leds   local operation and display
ethernet interface, rj-45   convenient operation, local or remote,
via standard web browser
  optional network management interface via snmp
parallel remote-control interface optional floating contacts for messages and commands
analog tv
tv standards   b/g, d/k, m, m1, n, i, i1
color transmission   pal, ntsc, secam
audio transmission   dual-sound coding in line with irt or fm single sound and nicam728
(-13 db/-20 db) or fm single sound (-10 db)
inputs   2 x video (bnc, 75 ω), 2 x audio (xlr, 3-pin)

1) with built-in ac supply overvoltage protection; more stringent requirements must be covered by additional measures installed on-site.

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 maintaining the required shoulder distance), the transmitter may only be operated with suitable filters at the rf output.

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