Bogen TAMB2 Connections to Paging Amplifier Input, Connections to Telephone Equipment

Connections to Paging Amplifier Input

Balanced Input Wiring:

The TAMB2 was designed to connect to a 600-ohm bal- anced TEL input. The amplifierʼs input sensitivity should be high enough that with 200mV input signal, the amp will be able to produce its full rated output power. If input sensitivity is not high enough, try using an unbalanced input with a WMT1A transformer (as shown below).

STATION/ PAGE

TRUNK OUT

T R PT PR G/S

600-ohm Balanced Input

IMPORTANT

Keep Amp turned off until all

wiring to the TAMB2 is complete

Unbalanced, Hi-Z Input Wiring:

STATION/ PAGE

TRUNK OUT

Wiring to an unbalanced Hi-Z or AUX input normally requires the use of a WMT1A trans- former. The output levels of the TAMB2 generally cannot drive this type of input to full rated power since the AUX input is less sensitive than the specialized TEL inputs. The WMT1A provides about a 5X voltage increase in the ampʼs input.

T R PT PR G/S

Hi-Z Unbalanced Input

WMT1A

Impedance-Matching Transformer

Connections to Telephone Equipment

PBX Ground Start Trunk

Port Connections

PBX or CO

(Loop Start

or Station Port)

Ring

Tip

STATION/ PAGE

TRUNK OUT

T R PT PR G/S

PBX

(Ground Start Port)

Ring

Tip

STATION/ PAGE

TRUNK OUT

T R PT PR G/S

PBX Loop Start Trunk Port

CO/PBX Station Port Connections

Wiring to the ground start trunk port requires a connection between the TAMB2ʼs G/S terminal and the ground of the PBX. The AC chassis ground for the PBX can typically be used for this connection.