Black Box SW540A-R3, Manual

Page: 6 / 31

5
CHAPTER 1: Specifications
Leads Supported — 1-8, 20, 22
Connectors — Base Unit: (5) DB25S 25-pin sub-D female; Unit with 4-Port
Expansion Board: (9) DB25S 25-pin sub-D female
Indicators — 10 LEDs: (1) Power, (9) Port Activity showing Receive activity
Interface — Asynchronous RS-232C/V.24 DTE/DCE (each port individually
selectable)
Speeds — 110 to 19,200 bps (each port individually selectable)
Memory — 31K buffer
Enclosure — Steel
Operating Temperature — 32 to 113°F (0 to 45°C)
Storage Temperature — -4 to 158°F (-20 to 70°C)
Humidity — 0 to 95% relative, noncondensing
Mean Time Between Failures — 20,000 hours for standard Switch (Ground Benign
Environment), 16,000 hours for standard Switch with 4-Port Expansion Board
Power — 115-VAC, 60 Hz, at 175 mA (230-VAC, 50-Hz version available)
Size — 2.3"H x 11.2"W x 12.1"D (5.8 x 28.4 x 30.7 cm)
Weight — 9.6 lb. (4.3 kg) for standard Switch, 10.2 lb. (4.6 kg) for standard Switch
with 4-Port Expansion Board
The Code Operated Matrix Switch (COMS for short) is a versatile microprocessor-
1. Specifications