Cisco GainMaker Optoelectronic Node 1GHz with 65 86 MHz Split Data Sheet

 

6

 
 

 

  Amplifier Type 

- 

Push-Pull 

 

  Operational Gain (minimum) 

dBmV 

19.5 

7,12 

  Frequency Response 

dB 

±0.5 

 

  Internal Tilt (+/- 1dB) 

dB 

-0.5 

 

  Noise Figure  

dB 

14.5 

7,12 

  Reference Output Levels @ 5 and 42 MHz 

dBmV 

35 

6 

 6 NTSC Channels (CW) 

 

 

 

  Composite Triple Beat 

dB 

92 

 

  Cross Modulation 

dB 

80 

13 

  Composite Second Order  

dB 

82 

 

 Station Performance – Reverse 
  (Station port input to optical transmitter input) 

 

 

  Operational Gain (minimum) 

dB 

17.5 

7,8 

 

  Station Delay Characteristics                      40 / 52 Split 
   Forward 
   (Chrominance to Luminance Delay) 

   (Group Delay in 1.5 MHz BW) 

55.25 - 58.83 

17 

5.0 - 6.5 

29 

61.25 - 64.83 

8 

6.5 - 8.0 

13 

67.25 - 70.83 

5 

8.0 - 9.5 

8 

 

 

35.5 - 37.0 

16 

 

 

37.0 - 38.5 

17 

 

 

38.5 - 40.0 

29 

 
 

 
 
 
 
 
 
 
 

 

Unless otherwise noted, specifications reflect typical performance and are referenced to 68

°F (20°C).  Specifications are based 

upon measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments. 

1. 

Reference output tilt and internal tilt are both “Linear” tilt. 

2. 

Forward Gain and Noise Figure measured with 0 dB input EQ and 1 dB input pad. 

3. 

Forward internal tilt specified is primarily due to an on-board equalizer and a factory configured 7.5 dB linear interstage equalizer 
(ISEQ). 

4. 

The forward reference output tilt specified is achieved via field installation of appropriate input EQ, in conjunction with the internal tilt 
of the launch amplifier and the tilt associated with the optical link (transmitter/receiver combination). 

5. 

Station performance can be determined by combining optic performance and launch amplifier performance.  Stated distortion 
performance is for launch amplifier section operated at reference output levels and tilt. 

6. 

Reverse output reference level at the RF output of the launch amplifier. 

7. 

Reverse Operational Gain, Noise Figure, and Return Loss are specified without reverse switch option.  If switch is installed, reduce 
Gain by 0.5 dB, increase Noise Figure by 0.5 dB, and decrease Return Loss by 1 dB. 

8. 

Station reverse gain from station input(s) to reverse transmitter input.  With 0 dB reverse input pad, 1 dB reverse output pad, and 0 
dB reverse EQ in launch amplifier.  Includes optical interface board losses. 

9. 

“Digital” refers to 550 - 1002 MHz loading with QAM carriers at -6 dB relative to analog video carrier levels. 

10.  “Digital” refers to 650 - 1002 MHz loading with QAM carriers at -6 dB relative to analog video carrier levels. 
11.  Insertion loss from optical receiver RF output to launch amplifier RF input, with specified forward plug-in module installed in the 

optical interface board.  Subtract this loss from the launch amplifier operational gain to determine forward station gain from optical 
receiver output to station output. 

12.  Reverse Gain and Noise Figure for launch amp with 0 dB reverse input pad, 0 dB reverse output EQ, and 1 dB output pad. 
13.  X-mod (@ 15.75 kHz) specified using 100% synchronous modulation and frequency selective measurement device.