SM500A—Automatic Switching System
Black Box Corporation
72
990-000-0001-E8
9 System Specifications
9.1 Automatic Switching System SM500A
Signal Interfaces
RS-232/V.24, V.35, RS-449, X.21/X.25,T1/T2, EIA-530, RJ-11, RJ-45, NTDS. Coax: BNC
Protocols
Transparent to all protocols
Relay Specifications
Relay type: latching
Contact material: gold-clad silver
Initial contact resistance: 50 milliohms
Expected life (number of operations) for all interface cards: 10,000,000
Operating Temperature
0-50°C, 32-122°F at 5-90% humidity, noncondensing
SM500A Size
19” (48.62 cm) wide, rack mountable
7” (17.78 cm) high
6.25” (15.87 cm) deep
Power
115VAC 60 Hz
Optionally 230VAC 50 Hz
Optionally -48VDC at 1.6 A SB (internally fused)
9.2 AC Redundant Power Supply
Line Voltage
115/230VAC, 60/50 Hz, switch selectable for each plug-in unit. Separate AC line feed to each plug-in
unit.
Fusing
1.6 A SB 115VAC
0.8 A SB 230VAC
Output
8 outputs @ 12VAC, 1A each
Operating Temperature
0-50°C, 32-122°F at 5-90% humidity, noncondensing
Agency Listing
UL recognized, CSA certified
