wheelock TBM-101 INSTALLATION INSTRUCTIONS

273 Branchport Avenue
Long Branch, N.J. 07740
[phone]

INSTALLATION INSTRUCTIONS

TALKBACK MODULE
MODEL NUMBER: TBM-101
FCC REGULATIONS:

This equipment complies with Part 68 of the FCC Rules. On the back of this equipment is a label that
contains, among other information, the FCC Registration Number and the Ringer Equivalence Number (REN)
for this equipment. You must, upon request provide this information to your telephone company.

The REN is also useful to determine the quantity of devices that you may connect to your telephone line and
still have all of those devices ring when your telephone number is called. In most, but not all areas, the sum of
the REN'S of all devices connected to one line should not exceed five (5.0). To be certain of the number of
devices that you may connect to your line, you may want to contact your local telephone company.

Should the equipment cause harm to the telephone network, the telephone company shall, if possible, notify
the customer that temporary discontinuance of service may be required; however, where prior written notice is
not possible, the telephone company may temporarily discontinue service without notice, if such action is
necessary under the circumstances. The telephone company may make changes in its communication
facilities, equipment and operations procedures, where such action is reasonably required in the operation of
its business and is not inconsistent with the rules and regulations of the Federal Communications Commission.

Do not attempt to repair or modify this equipment. Repairs to this product will be performed by Wheelock Inc.
273 Branchport Ave, Long Branch, NJ 07740 in accordance with Wheelock Inc.'s published Terms and
Conditions of Sale. This equipment should not be used on coin telephone lines. Connection to party line
service is subject to state tariffs.

If trouble is experienced, disconnect this equipment form the telephone line to determine if it is causing the
malfunction. If the equipment is determined to be malfunctioning, its use shall be discontinued until the
problem has been corrected.

APPLICATION INFORMATION:

WARNING: ANY MATERIAL EXTRAPOLATED FROM THIS DOCUMENT OR FROM WHEELOCK MANUALS OR
OTHER DOCUMENTS DESCRIBING THE PRODUCT FOR USE IN PROMOTIONAL OR ADVERTISING CLAIMS, OR
FOR ANY OTHER USE, INCLUDING DESCRIPTION OF THE PRODUCT'S APPLICATION, OPERATION,
INSTALLATION AND TESTING IS USED AT THE SOLE RISK OF THE USER AND WHEELOCK WILL NOT HAVE
ANY LIABILITY FOR SUCH USE.

The TBM-101 is a self contained talkback system containing an omni-directional microphone and a
preamplifier for talkback. It also contains a 4" speaker and a 1 watt amplifier for one-way voice paging,
background music and tone alerting. The TBM-101 is compatible with most EKSU, KSU (1A2) and PABX
systems. The TBM-101 may be used in single zone or multi-zone applications.

Copyright 1987, 1988, 1989, 1990, 1991, 1993, 1994 Wheelock, Inc. All rights reserved.

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Background noise permitting, the TBM-101 will service up to 1000 square feet. See Figure 1 and Chart 1 for
relation between noise and maximum reply distance. The direction of speech is controlled by the calling party
(at the telephone), to prevent false switching of speech direction due to background noise.

CAUTION: These Devices Are Not Intended For Use In Hazardous Locations As Defined By The National Electrical
Code (NEC) And By The National Fire Protection Association (NFPA). Contact Wheelock Inc. for Information On
Explosion-Proof Devices Designed For Hazardous Locations.

Figure 1. Talkback Distance Vs. Ambient Noise Chart 1.
Typical Noise Levels

LOCATION
MACHINE SHOP
MANUFACTURING (NOISY)
PRINTING SHOP
ASSEMBLY LINE
SUPERMARKET
TRANSPORTATION ­ WAITING ROOM
OFFICE (NOISY)
SHIPPING/WAREHOUSE
RESTAURANT
DEPARTMENT STORE
BANK (PUBLIC AREA)
OFFICE (QUIET)
OFFICE/DOCTORS ­ WAITING ROOM
HOTEL LOBBY
DOCTORS EXAM ROOM

dB
90
80
80
75
75

75
70
70
70
65
65
55

55
55

55

Figure 1A.

Talkback/Paging Connections & Applications

*NOTES:

1. Wheelock's TBM-101 Talkback Module may be connected to a 600 ohm low power audio page port if

the page port allows two-way audio. Check with telephone system manufacturer.

2. If unused CO port requires talk battery to pass audio (most do), then install using a Wheelock RPS-

2406 power supply as shown in Figure 3. For multi-zone applications, a Wheelock Zone Control is
required as an interface.

3. Denotes optional "inhibit" wires. Disconnects (inhibits) Talkback when an all page is initiated.

Applicable only when TBM-101 is used with Wheelock Zone Controls. Use "INH. GND (+)" only when
TBM-101 and Zone Control are using separate power supplies.

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PRIVACY LED INDICATOR OPERATION:

A. When connected to Wheelock's ZC-3 Zone Control Module, the Privacy LED illuminates when the

TBM-101 is in the listen mode.

B. When connected directly to an unused CO port:

- The LED will be illuminated when the TBM-101 is in the idle state. Occasional flicker of the