Specifications, Console-driven operation | Black Box V.35 specification

side and a return of carrier detect on “A” triggers automatic switching back to “A.”

The Fallback Switch even enables you to specify at what point an alarm is reported. Set it up so the condition causing the alarm must be present for a certain period of time (the “Time to Alarm”) before the switch sends an alarm to the console. Likewise, you can also specify the time it takes to clear an alarm that‘s reported. With this function, the switch issues a “clear” report after the original alarm condition has

been clear for a user-definable period of time.

Console-controlled data circuit alarming on both “A” and “B” connectors occurs independent of switch position.

Console-driven operation

To determine the status of any interface or switch the circuit, just access the Fallback Switch through the management console connection. You can view the physical-layer status of eight signals on the “A” connector and on the “B” connector regardless of the current switch position.

User-friendly help screens guide you through the process, and you use password-protected menus to access groups of switch commands.

These include groups for displaying and configuring switch alarms and defining alarms per interface; for switching and displaying switch status; and for turning on or off the leads status display on the management console. You can even disable front-panel control to ensure that all switching control comes from the console’s user.

Also use the console menus to set up remote control of the Fallback Switch through a modem connection. The switch can be programmed to use this modem link to automatically dial a remote management terminal when an alarm occurs and ”hang up” the modem when the transmission is completed.

The Fallback Switch stores all configuration-related commands, including switch settings, in battery-backed RAM.

Specifications

Approvals: FCC Part 15, UL®, CSA,

Leads Supported: 1 through 25

Maximum Data Rate: Depends

upon cabling

Switches: (1) 2-position mode selector

Energy Rate: 6 VA

Receptacle: 3-prong grounding

Interface: SW111A: RS-232/V.24; SW115A: V.35;

SW116A: RS-530

Connectors: All: (1) 8-pin RJ-45; SW111A, SW116A: (3) DB25 F; SW115A: (3) M/34 F

Indicators: (1) A, (1) B, (1) SD, (1) RD,

(1) CD, (1) DTR, (1) RTS

Power: 100–120 VAC, 60 Hz

Size: 1.6"H x 8.4"W x 10.8"D (4.1 x 21.3 x 27.4 cm)

Weight: 4.8 lb. (2.2 kg)

What’s included

•Fallback Switch (FBS), Industrial

•(1) modular 25-pin adapter (for the control port)

•(1) 6-ft. (1.8-m) 4-wire straight-through modular cable (for connecting a DB25 terminal/PC connector to a single switch)

•(1) power cord

NOTE: If you use a PC with a 9-pin connector, you’ll need a a special adapter. Also, to cable a terminal or PC directly to a group of switches, use a DB25 ribbon cable. For ordering information on these, contact Black Box Tech Support.

Ordering Information

ITEM	CODE
Fallback Switch (FBS), Industrial
RS-232/V.24	SW111A
V.35	SW115A
RS-530	SW116A
You might also want to order cables:
RS-232 Cable (NEC® CL2)	ECM25C-0010-MF