Dataprobe K-AB-D25-R, K-AB-M34, K-AB-M34-R Installation And Operation Manual

Installation And Operation

BASIC A/B SWITCHES

K-AB-D25 K-AB-M34

SCOPE OF THIS DOCUMENT

This document covers the following models:
K-AB-D25 K-AB-D25-R
K-AB-M34 K-AB-M34-R

For the purposes of clarity, all above models are referred to as "K-AB ".

Card Nest

K-AB-R-12 Universal 12 position card nest for all K-AB cards above and all other K-AB cards.

GENERAL DESCRIPTION

Dataprobe's Relay Controlled A/B Switches, (K-AB) permits automatic, remote or manual switching of a
Common line between two circuits, A or B. Multiple relays are used to switch the following circuit types:

D25: 25 Pin D Subminiature Connectors; 23 Leads Switched,
Pins 1 (FG) and Pins 7 (SG) Unswitched

M34: 34 Pin ‘M’ (V.35) Connectors. 19 Leads Switched,
Pins A (FG) and Pins B (SG) Unswitched

When the relays are in the relaxed position, the Common Port is connected to Port A (Position A).
When a selected external control signals is supplied, the relays are energized and the Common Port is
connected to Port B (Position B). The K-AB returns to the A Position when the de-energize conditions
are met.

REF: M\MANUALS\K1\KAB-D25-M34_V970905E.DOC

Technical Support Hotline: [phone]

11 Park Place / Paramus, New Jersey 07652
TEL: [phone] FAX: [phone]

Website: www. dataprobe.com Email: [e-mail]

Model K-AB-D25 / M34 Page 2

INPUT SELECTION

The K-AB is designed to be operated by an externally supplied control signal. The following control
signals can be used to operate the K-AB. Install the jumpers as shown to configure the K-AB.

Control Lead Logic Required Jumper E1 Jumper E2 Jumper E3

Contact Close=B Open=A Out Contact LO
RS-232 Low=B High=A Out EIA/TTL LO
RS-232 High=B Low=A Out EIA/TTL HI

TTL Low=B High=A In EIA/TTL LO

Gang Switching

An additional setting enables the K-AB card to be used in a multi-circuit gang (simultaneous) switching
arrangement. When used in this manner, one master card controls one or more slave cards. Jumper
E4 sets the master or slave nature of the card.

No Jumper = Independent Use any Control Input, as above
Master = Card Is Master Use any Control Input, as above
Slave = Card Is Slave Set for Contact Closure

Only one card in each card nest can be set as Master.

INSTALLATION AND CONFIGURATION

Connect External Control Source

Standalone models use a nine pin D Subminiature female connector to access the externally supplied
signals. Dataprobe supplies a mating connector kit to assist in fabrication of the proper control cable.
Rack Mounted cards have Control leads terminate on 50 pin Telco connectors on the rear of the
K-AB-R-12 nest. See Appendix A for 9 Pin and Telco Connector Pinouts.

The K-AB is often used in conjunction with other Dataprobe remote switch controlling equipment:
Smart-Line: Multi-Switch Control via Tone dial telephone.

Call Director: Dial Line Sharing device with Switch Control capabilities.
Code Activated Switch: Multi-Switch Control with ASCII Commands.

Dataprobe can supply interconnect cables for any application