Technische Hinweise zur Multiswitch-Serie • SMS 9940 NF ... - Spaun

Trunklines (SMS 9940 NF and SMK 99XX F)
• Trunkline output 0 provides a remote voltage of 18 Volts (max. 500mA) to supply
cascaded multiswitches.
The terrestrial trunkline must therefore be connected even if no terrestrial
signals are distributed!
• All trunklines (0...8) have to be terminated with the isolated terminations (ZFR 75 DC)
supplied.
• Unused inputs and taps (A...D/A...F/A...H) must be terminated for EMC conformity.
Terrestrial
• The terrestrial input has an adjustable attenuator (SMS types).
The terrestrial amplifier is CATV-compatible (push-pull technique).
• Turning the adjustable attenuator fully CCW, the terrestrial amplifier is switched off
and bypassed (SMS 9400 / 9600 / 9800 NF only). Terrestrial distribution will then be
completely passive and return-path compatible.
• Aerial signals must be fed via diplexers or multiband-amplifiers (selective multibandamplifiers
type MBV... or selective FM devices as FM filter FMP 30 or FM amplifier
VFM 12 F). It is not recommended to connect an aerial directly.
• Max. output level
- SMS 9940 NF (trunkline):
MHz
47 - 450
47 - 606
47 - 862
dBµV / 60 dB / DIN EN 50083-3
dBµV / 1R8-15
IMA 3 IMA 2 CTB CSO CENELEC CTB 72 dB CSO 69 dB
109 108 105 111 A: 19 K 98 101
107 106 100 104 C: 29 K -- --
106 102 98 98 E: 42 K -- --
- SMS 9400 / 9600 / 9800 NF (tap):
MHz
47 - 450
47 - 606
47 - 862
dBµV / 60 dB / DIN EN 50083-3
dBµV / 1R8-15
IMA 3 IMA 2 CTB CSO CENELEC CTB 72 dB CSO 69 dB
89 88 84 82 A: 19 K 78 72
88 84 81 80 C: 29 K -- --
86 81 80 75 E: 42 K -- --