Model 4124 DB9 A/B Automatic Fallback Switch with Contact Closure Remote Port

When in automatic fallback mode, Model 4124 monitors data activity on port A. If activity is lost, the unit switches to position B. It maintains its connection to port B until activity is detected on port A. It then automatically returns to A.

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The PathWay® Model 4124 DB9 A/B Automatic Fallback Switch with Contact Control Remote Port, allows the user the capability of sharing a single port interface device connected to the Common port among two other devices connected to the A and B ports with remote access functionality. Remote Control access can be accomplished through the Contact Closure Remote Port.

When in automatic fallback mode the unit monitors data activity on port A. If activity is lost, the unit switches to position B. The Model 4124 will maintain its connection to port B until data activity is detected on port A, at which time the unit will automatically return to the A position. If no data is present on either port A or on port B, the unit will stay in the A position and continue to monitor for data. The user can override automatic fallback operation from the front panel or Remote Port and force the unit to operate as an A/B switch.

Model 4124 DB9 A/B Automatic Network Switch Features:
1) Ideal for fallback applications.
2) The switch ports are transparent to all data.
3) All pins of the DB9 interface are switched.
4) Automatic Fallback Mode operates based on data monitoring of pin 3 of the A port and automatic switching occurs after 3 seconds of data loss.
5) All switched signals are passed via latching copper contact relays that maintain their position and continuity in the event of a power loss.
6) Control of the switch position from a Contact Closure Remote Port.
7) Contact Closure allows the user to control switch position, lockout front panel operations and obtain switch status.
8) Front panel LEDs display switch position, the switch mode (automatic fallback or manual) as well as power status.
9) Rugged aluminum case provides EMI/RFI shielding.

Tags

DB9 A/B Switch, Fallback Switch, Automatic Switch, Data Switch, Network Switch, Switch Box, AB Switch