Cisco CETUS - CYGNUS DigiStar Headend Products (PAL) Data Sheet

 

3

 
 
 

 

Number of outputs 

1 output + 1 RF test point 

Connector F-type 
Output impedance 

75 Ω 

Return loss 

45 to 870 MHz 

≥ 14 dB 

Frequency range 

Channel edges within 45 and 870 MHz 

Tuning step 

25 kHz 

Channel bandwidth (CBW) 

6 MHz (ITU-C); 7 or 8 MHz (ITU-A) 

Frequency accuracy 

± 3 ppm (at room temperature) 

Frequency stability 

± 3 ppm (within specified temperature range) 

Output level (per channel) 

50 dBmV to 61 dBmV in steps of 0.5 dB 

Output level accuracy 

± 1 dB (at room temperature) 

Output level stability 

± 1 dB (within specified temperature range) 

Frequency response 

± 0.4 dB in Channel Bandwidth 

Integrated phase noise (DSB) and modulated 
adjacent noise 

Exceeds (EURO) DOCSIS specifications 

RF mute isolation 

> 70 dB 

Total discrete spurious inband (fc ± 3 MHz) 

< -60 dBc @ max power 

Inband spurious and noise (fc ± 3 MHz) 

< -55 dBc @ max power 

Other channels discrete spurious (50 to 950 MHz) 

< -60 dBc @ max power 

Out of band CNR 

> 75 dBc @ 100 MHz offset 

 

Connector F-type, 

75 

Ω 

Return loss 

≥ 18 dB 

RF level 

-20 dBc ± 0.5 dB 

 

Connector RJ-45 
Interface type 

10Base-T 

Protocols HTTP, 

SNMP, 

IIOP 

User interface 

Java 

 

PID filtering / re-mapping capability 
Dynamic PSI/SI regeneration 
Built-in PSI/SI viewer 
Detailed bit rate measurement of incoming services 
Error monitoring