wheelock CH-AT1-W INSTALLATION INSTRUCTIONS

273 Branchport Ave.
Long Branch, N.J. 07740
[phone]
www.wheelockinc.com Thank you for using our products.

INSTALLATION INSTRUCTIONS

ELECTRONIC TELCHIME

Use this product according to this instruction manual. Please keep this instruction manual for future reference.

MODEL: CH-AT1

APPLICATION INFORMATION:

Wheelock Inc. manufactures high quality telephone products. The installation of this product must conform to the following
instructions. IF ANY WORDS OR LETTERS APPEAR ON THE PRODUCT INDICATING A PARTICULAR USE, THE
PRODUCT MUST BE USED ONLY IN THE MANNER SO INDICATED. THE INSTALLATION OF THIS EQUIPMENT
SHOULD ONLY BE UNDERTAKEN BY QUALIFIED PERSONNEL. FIELD ADJUSTMENT, REPAIR OR MODIFICATION
OF THESE SIGNALS SHOULD NOT BE ATTEMPTED. Malfunctioning units should be returned for factory repair or replacement
in accordance with Wheelock Inc.'s published terms and conditions. Contact Wheelock Inc., 273 Branchport Ave., Long Branch, NJ,

07740.

FCC REGULATIONS:

- This equipment complies with Part 68 of the FCC Rules. The label affixed to this product contains, among other information,
the FCC Registration Number and the Ringer Equivalence Number (REN) for this product. This information must be provided
to the telephone company if requested.

- The REN is used to determine the quantity of devices which 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, contact your
local telephone company.

- 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 from 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.

- 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.

DOC REGULATIONS:

NOTICE: The Canadian Department of Communications label identifies certified equipment. This certification means that the

equipment meets certain telecommunications network protective operational and safety requirements. The Department does not
guarantee the equipment will operate to the user's satisfaction.

- Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local
telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases,
the company's inside wiring associated with a single line individual service may be extended by means of a certified connector
assembly (telephone extension cord). The customer should be aware that compliance with the above conditions may not prevent
degradation of service in some situations.

- Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications
company cause to request the user to disconnect the equipment.

- Make sure that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if
present, are connected together.

-

CAUTION: The installation of this equipment should only be undertaken by qualified personnel.

- The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to a telephone
loop which is used by the device, to prevent overloading. The termination on a loop may consist of any combination of devices
subject only to the requirement that the total of the Load Numbers of all the devices does not exceed 100.

Copyright 1987, 1990, 1991, 1992, 1993, 1994 Wheelock, Inc. All rights reserved.

Load Number for CH-AT1 = 10

P81087 H

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GENERAL INFORMATION:

Electronic TelChime provides a pleasant chime signal as an alternative to standard telephone bell ringers and electronic warblers. It is
designed for use on Public Telephone Network or behind PBX and Key Systems that use interrupted ringing voltages from 50­130VAC, 20-30Hz.

TelChime produces a single chime sound during each cycle of interrupted ringing voltage. Both tone and loudness are adjustable.
Solid state design requires low current drain and is not affected by rotary dial voltage spikes.

CH-AT1 is recommended for use in indoor areas up to 1000 square feet. CH-AT1 is attractively packaged for convenient mounting.

MOUNTING INFORMATION:

CH-At1 TelChime is designed for mounting to interior structures such as walls, partitions or posts. Locate the chime as desired and
place mounting screws (supplied with each unit) as shown in Figure 1. Hang the chime securely by means of the keyholes on the back
of each unit.

WIRING INFORMATION:

Connect the chime to the telephone system with a standard modular line cord (not provided). The cord is typically 7 foot in length
with a modular plug to mate with a RJ-11C jack in the USA or a CA-11 jack in Canada. Refer to Figure 1 for connection and
adjustment. If a spare telephone jack is not available, a "T" adaptor can be used. The TelChime does not eliminate the telephone
ringer. This ringer can be disconnected when the signal is installed. Test the ringer by having someone ring your phone to make sure
the signal functions properly.

All TelChimes are shipped with controls preset as follows:
(A) Volume control at maximum.
(B) Tone control at 960Hz
Settings (A) and (B) are selected to achieve peak sound output (dBA at 1 meter). Volume and tone controls may be readjusted as
required. Note that changes in factory setting of either or both controls will reduce sound output.

SPECIFICATIONS: (CH-AT1)

Nominal Voltage 90VRMS, 20Hz
Input Voltage 50-130VRMs, 20-30Hz
Ringer Equivalence 0.4A
Voice Impedance 100K OHMS @ 400Hz, 3VRMS
DC Impedance Virtually Infinite (Blocking Capacitor)
Dial Spike Suppression Meets EIA RS-470 Specs
Duty Cycle 33% Max. with 10 Second Max. On-Time
Chime Delay Time 1 Second
Minimum Ring Cycle On-Time .8 Seconds
Input Jack USOC RJ11C (Pin 3 - Ring; Pin 4 - Tip)
Minimum Chime Frequency 750Hz
Maximum Chime Frequency 1200Hz
Peak dBA at Meter (Max. Volume) CH-AT1
80dBA

Figure 1. Figure 2.

LO HI

TONE

SOFT

LOUD

VOLUME

2"

TO TELEPHONE

ADDITIONAL ALERT

-OR-

P81087 H

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