Motorola SG4-DRT-2X Instruções de Operação descarregar pdf (Página 77)

Modules 4-5

SG4000 Installation and Operation Manual

Table 4-2 provides SG4-R* minimum output levels; levels at the receiver test point are -20 dB.

Table 4-2

SG4-R/* minimum output levels

Optical input level

(dBm/mW)

TP Volts

(1 mW=1 V)

Output (dBmV) @ 547.25 MHz

77 channels

Comments

3.0/2.0

2.0 52 High level alarm

2.0/1.58

1.58 50 Normal

1.5/1.4

1.4 49 Normal

1.0/1.26

1.26 48 Normal

0.5/1.1

1.1 47 Normal

0.0/1.00 1.00 46 Optimum

–0.5/0.9

0.9 45 Normal

–1.0/0.8

0.8 44 Normal

–1.5/0.71

0.71 43 Normal

–2.0/0.6

0.6 42 Normal

–2.5/0.56

0.56 41 Normal

–3.0/0.5

0.5 40 Normal

–3.5/0.44

0.44 39 Normal

–4.0/0.4

0.4 38 Normal

–5.0/0.3

0.3 36 Low level alarm

Optical modulation index (OMI) for 77 channels (per channel): 0.0403.

For 1550 nm operation, the RF levels out of the transmitter will be 0.42 dB higher at any given optical input.

OMI for 110 channels (per channel): 0.0337.

Optical transmitter wavelength is 1310 nm.

The plug-in Linear Mid-Stage Equalizer (LME) circuitry within the SG4-R receiver develops a

portion of the overall node output slope and is factory selected depending on the station slope

requirements. For a standard slope of 12.5 dB at 870 MHz (14.5 dB at 1003 MHz), the receiver

output typically exhibits 8 dB output slope at 870 MHz. The balance of the station slope is

generated by the Flatness Slope Board (FSB) in the RF modules.

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 107 108

Comentários a estes Manuais

Sem comentários

Motorola SG4-DRT-2X Instruções de Operação Página 77

Comentários a estes Manuais

Manuais e produtos relacionados com Processadores Motorola SG4-DRT-2X