C-COR Flex Max901e Equipment Manual page 132

B
B-22 Flex Max901e 1GHz Trunk and Bridger Amplifiers
9. Systems operating with digitally compressed channels or equivalent broadband noise from 550 to 1002MHz at
levels 6dB below equivalent video channels will experience a composite distortion (CIN) appearing in the 85 to
550 frequency spectrum.
10. Systems operating with digitally compressed channels or equivalent broadband noise from 550 to 870MHz at
levels 6dB below equivalent video channels will experience a composite distortion (CIN) appearing as noise in the
54 to 550MHz frequency spectrum.
11. According to EN50083-3, 42 channel Cenelec loading and 8dB slope.
12. Cenelec testing performed with NPB-020 installed in the bridger EQ/PAD location.
13. With bridger port 3 output levels at 55/47dBmv, the trunk output (port 4) will be 46/38dBmV. At the 46/38dBmV
output level, the trunk output performance will be 82dBc minimum (CTB) and 78dBc minimum (CSO).
14. The Noise Figure and C/N specifications are typical within specified passband.
15. Difference in linear loss between 85MHz and 1002MHz.
16. Total flat loss at 1002MHz which includes insertion loss of linear EQ.
17. The forward bridger port gain and flatness is 11 ±1.0dB as referenced to the trunk port with an NPB-000 installed
in the bridger EQ/PAD location.
18. The return bridger port gain and flatness is 0 ±0.5dB as referenced to the trunk port.
19. All testpoints are directional and referenced to their associated RF port. For "H" output option, all forward and
return testpoints are internal and only accessible with the housing lid open. For "P" output option, all forward
testpoints are external and all return testpoints are internal.
20. Power requirements indicated are with the HEPS790–2.3 power supply 122027–05. See 333995–17 for additional
information. For 60VAC Powering: AC Power consumption in Watts divided by a factor of
43 = Amps required. For 90VAC Powering: For ≤ 67VAC, 1.03 x (AC Power consumption in watts divided by voltage)
= Amps required. For 67 - 90VAC, AC Power consumption in watts divided by 65 = Amps required.
21. ALC pilot level range is based on a nominal pilot level of 37 dBmV for pilot frequencies ≤ 499.25 MHz or 32 dBmV
for pilot frequencies > 499.25 MHz. C-COR recommends that if the pilot level, from a design standpoint, is more
than +2/-1 dBmV from nominal, the ALC PAD should be changed to optimize the ALC pilot level range. This should
alleviate any possible ALC setup and/or operation issues due to typical system level variations caused by system
components flatness characteristics. See the FM901e equipment manual for correct selection of ALC PAD value to
insure proper ALC setup and operation.
22. For ALC pilot frequencies of ≤ 499.25 MHz, the ALC pilot filter is a single channel device. This means that the
adjacent channels will have no affect on the RF power level that the RF detector is measuring. For ALC pilot
frequencies > 499.25 MHz, the ALC pilot filter is not a single channel device. This means that the adjacent QAM
channels will have an affect on the RF power level that the RF detector is measuring. C-COR recommends that the
adjacent QAM channels be present on the system before the ALC system of the amplifier station is balanced. This
will avoid station re-balance in the future when those QAM channels would be added to the system.
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