DVB-S(2) / DVB-T(2) / DVB-C into DVB-T 
 Conversion of 4 terrestrial channels
 The triple tuner reception headend PCU 4121 converts the signals of four terrestrial or cable network channels into DVB-T channels. 
 The four inputs are each provided with a CI interface for decoding encrypted signals. The dual modulators can split the selected channels to two output channels in order to avoid bandwidth problems. The headend can be programmed fastly and easily via the USB interface.
 Features like LCN, NIT, TSP and LAN administration complete the practical functionality. 
 The high quality components and the “Made in Germany” in-house development and production enable you to build up reliable and durable reception systems with POLYTRON's PCU 4121.
 
 Triple tuners: input signal freely selectable with 4 x CI slots MPEG 2 and MPEG 4 compatible output signal switchable output channels freely selectable from 112-862 MHz
 adjacent channel processing
 level attenuation 0-12 dB
 built-in LNB power supply
 temperature-controlled fans
 dual modulators
 transponder content can be erased TSP
 logical Channel Numbering LCN
 Network Information Table NIT compatible
 built-in LAN controller
 Made in Germany
 Typ / Type 
 PCU 4121
 Artikel-Nr. / Article no. 
 5552160
 Eingänge / Inputs 
 4
 CI-Schnittstellen / CI slots 
 4
 Eingangspegel / Input level 
 50–80 dBµV
 Demodulator
 DVB-S2/S
 SR DVB-S / QPSK 
 1 - 45 MS/s
 SR DVB-S2 / QPSK 
 1 - 45 MS/s
 SR DVB-S2 / 8PSK 
 1 - 45 MS/s
 Modulation 
 8PSK / QPSK
 CR DVB-S / QPSK 
 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
 CR DVB-S2 / 8PSK 
 3/5, 2/3, 3/4, 5/6, 8/9, 9/10
 Roll off 
 0.35, 0.25, 0.20
 DVB-T
 Modulation 
 QPSK, 16QAM, 64QAM
 FFT 
 2K, 8K
 Channel bandwidth 
 7, 8 MHz
 Code rate 
 1/2, 2/3, 3/4, 5/6, 7/8
 Guard interval 
 1/4, 1/8, 1/16, 1/32
 DVB-T2
 Modulation 
 QPSK, 16QAM, 64QAM, 256QAM
 FFT 
 1K, 2K, 4K, 8K, 16K, 32K
 Channel bandwidth 
 7, 8 MHz
 Code rate 
 1/2, 3/5, 2/3, 3/4, 4/5, 5/6
 Guard interval 
 1/4, 5/32, 1/8, 5/64, 1/16, 1/32, 1/64, 1/128
 DVB-C
 Modulation 
 16QAM, 32QAM, 64QAM, 128QAM, 256QAM
 Symbol rate 
 7.2 Msps
 Channel bandwidth 
 6, 7, 8 MHz
 Ausgangsmodulation im Auslieferungszustand
 Output modulattion ex works 
 DVB-T
 Ausgangskanäle / Output channels 
 4 + 2
 Frequenzbereich / Frequency range 
 112-862 MHz
 Signal constellation 
 QPSK, 16, 32, 64 QAM
 FEC 
 1/2, 2/3, 3/4, 5/6, 7/8
 Bandbreite / Bandwidth 
 7 / 8 MHz
 Anzahl der Träger / Number of carriers 
 2K, 8K
 Ausgangspegel / Output level 
 90 dBµV
 Regelbare Dämpfung je Kanal / Channel attenuation 
 0...12 dB
 MER 
 typ. 38 dB
 Leistungsaufnahme / Power consumption 
 40 W
 Spannungsversorgung / Operating voltage 
 180-265 V, 50/60 Hz
 Maße (B x H x T) / Dimensions (W x H x D) 
 331 x 328 x 103 mm