Motorola Starline SG 2000, Инструкция по установке и эксплуатации

Страница: 94 / 105

SG 20 00 Ins tal la tion and O pera tion M anua l
Appendix A
Specifications
Specifications for the SG 2000 are valid over the given bandpass and operating temperature range
listed in this section. The current catalog may contain additional information not provided below.
Table A-1 lists the optical characteristics for the SG 2000 node:
T a b l e A- 1
SG 2 0 0 0 o p t i c a l c h a r a c t e r i s t i c s
Parameter Specific ation
Optical wavelength 1310 ±20 nm through 1550 ±30 nm
Received optical power
minimum (low gain)
minimum (high gain)
maximum
–2 dBm (47 dBmV)
–4 dBm (47 dBmV)
+2 dBm (continuous)
Optical input return loss 40 dB minimum
Equivalent input noise
current 8 pa/Hz
1/2
Table A-2 lists the station RF characteristics for the SG 2000 node:
T a b l e A- 2
S t a t i o n R F c h a r a c t e r i s t i c s
Parameter Specific ation
Forward passband frequency 47 MHz through 870 MHz (dependent upon split)
Return passband, each port 5 MHz through 65 MHz (dependent upon split); 200 MHz
capable
Upconverted return output
50 MHz through 400 MHz
Splits
S
J
A
K
E
M
40/52 MHz
55/70 MHz
65/85 MHz
42/54 MHz
30/47 MHz
80/108 MHz
Return loss
16 dB
Minimum full gain
RF amplifier (low gain)
RF amplifier (high gain)
Gain control range
32 dB
38 dB
8 dB
Operational gain
RF amplifier (low gain)
RF amplifier (high gain)
28 dB
34 dB