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