SMS-7000 Modem Protection Switch
Introduction
Rev. 3
1–13
Table 1-5. SMS-7000 Specifications (Continued)
I/O Interfaces
Terrestrial Data
(Each channel)
V.35 Data: 25-pin female D.
EIA-422/MIL-STD-188 Data: 37-pin female D.
G.703 Balanced Drop and Insert: 15-pin female D.
G.703 Unbalanced Drop and Insert: Coax.
EIA-232 Data: 25-pin female D.
ADPCM Audio Data: 9-pin female D.
Engineering Data Channel: 25-pin female D.
Alarms: 25-pin female D.
External Reference Clock: BNC.
IF Ports
10 each IF Modulation: BNC.
10 each IF Demodulation: BNC.
8 each Uplinks: BNC.
8 each Downlinks: BNC.
IF
Downlinks: up to 8.
Uplinks: up to 8.
Frequency response: 50 to 180 MHz.
Return loss: 18 dB.
Impedance: 75
Ω
or 50
Ω
(optional).
Isolation: 60 dB.
Transmit loss: < 1.5 dB.
Receive loss: < 5.0 dB.
General
Prime Power
90 to 264 VAC; 47 to 63 Hz, 40W max.
-48 VDC; 40W max. optional.
Size and Weight:
Control Unit
Switch Unit with IF Switch
1U 19-inch (48.3 cm) rack mount by 20-inch (51 cm) deep,
< 10 lbs. (4.5 kg).
8U 19-inch (48.3 cm) rack mount by approx. 4.5-inch deep
(11 cm), < 20 lbs. (9.1 kg).
Mounting
Top Mount.
Back Mount (Hinged).
Temperature:
Operating
Storage
0
°
to +40ºC (32
°
to 100
°
F).
-50
°
to +100ºC (-58
°
to 212
°
F).
Humidity
95% at +40ºC (100
°
F), non-condensing.
EMI
CE-Mark certified.
Содержание SMS-7000
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Страница 106: ...Theory of Operation SMS 7000 Modem Protection Switch 4 2 Rev 3 Figure 4 1 IF Switch Block Diagram...
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Страница 148: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...