Digital Alert Systems 627A User Manual

Model 627A Stereo A/V Switch Instruction Sheet

Installation

1. Connect your main
audio/video common outputs
to your equipment's' in-puts.

2. Connect the power supply
wires, White to +12 V and
Black to Ground, to the
terminal block connections
marked.

3. A TTL level control signal or
a dry contact across ground
and relay set will change the
output from the primary to the
secondary.

*Relay connection: Connect the
normally open (NO) contact to
Ctrl. Connect the relay common
(COM) contact to Gnd.

Open Collector:
Connect your transistor’s
Collector to Ctrl and the
transistor’s emitter to Gnd

Operation

The 627A’s primary inputs are
normally connected to the
common outputs. It remains in
this state until the Ctrl input is
connected to Gnd. This will
connect the secondary input to
common for the duration of the
connection.

Specifications

Video

75Ω ; 'F' connectors

Audio

Balanced stereo; screw terminals

Video Isolation @ 950 MHz

> 52 dBmV

Video-IF/RF Return Loss

> 22 dBmV

Control Input

10 mA maximum to gnd.

Power Requirement

100-240 VAC ±2%,50/60 Hz.
Power pack output; +12 VDC

Physical

5.25"H x 2.75"W x 2"D

Design and specifications are subject to
change without notice.

P/N 1340169 (627A/100)

061109

WARRANTY

Monroe Electronics, Inc. warrants to the owners, each instrument and sub-assembly manufactured by
them to be free from defects in material and workmanship for a period of one year after shipment from
factory. This warranty is applicable to the original purchaser only.

Liability under this warranty is limited to service, adjustment or replacement of defective parts (other than
fuses or batteries) on any instrument or sub-assembly returned to the factory for this purpose,
transportation charges prepaid.

This warranty does not apply to instruments or sub-assemblies subjected to abuse, abnormal operating
conditions, or unauthorized repair or modification.

Since Monroe Electronics, Inc. has no control over conditions of use, no warranty is made, or implied as to
the suitability of our product for the customer's intended use.

THE WARRANTY SET FORTH IN THIS ARTICLE IS EXCLUSIVE AND IN LIEU OF ALL OTHER
WARRANTIES AND REPRESENTATIONS, EXPRESS, IMPLIED OR STATUTORY INCLUDING, BUT
NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. Except for
obligations expressly undertaken by Monroe Electronics, in this warranty, Owner hereby waives and
releases all rights, claims and remedies with respect to any and all warranties, express, implied or statutory
(including without limitation, the implied warranties of merchantability and fitness), and including but without
being limited to any obligation of Monroe Electronics with respect to incidental or consequential damages,
or damages for loss of use. No agreement or understanding varying or extending the warranty will be
binding upon Monroe Electronics unless in writing signed by a duly authorized representative of Monroe
Electronics.

In the event of a breach of the foregoing warranty, the liability of Monroe Electronics shall be limited to
repairing or replacing the non-conforming goods and/or defective work, and in accordance with the
foregoing, Monroe Electronics shall not be liable for any other damages, either direct or consequential.

RETURN POLICIES AND PROCEDURES FOR FACTORY REPAIR

Return authorization is required for factory repair work. Material being returned to the factory for repair
must have a Return Material Authorization number. To obtain an RMA number, call 585-765-2254 and
ask for Customer Service.

Material returned to the factory for warranty repair should be accompanied by a copy of a dated invoice or
bill of sale, which serves as a proof of purchase for the material. Serial numbers and date codes on our
products also serve to determine warranty status. Removal of these labels or tags may result in voiding a
product’s warranty.

Repairs will be returned promptly. Repairs are normally returned to the customer by UPS within 10 to 15
working days after receipt by Monroe Electronics, Inc. Return (to the customer) UPS charges will be paid
by Monroe Electronics on warranty work. Return (to the customer) UPS charges will be prepaid and
added to invoice for out-of-warranty repair work.

RETURN OF REPAIRED ITEMS:

Factory repairs will be returned to the customer by the customer’s choice of FedEx, DHL or UPS.
Warranty repairs will be returned via UPS ground. The customer may request accelerated shipping via
the previous mentioned carriers for both warranty and non-warranty repairs. NOTE: Accelerated
transportation expenses for all factory repairs will always be at the expense of the customer despite the
warranty status of the equipment.

FACTORY REPAIRS TO MODIFIED EQUIPMENT:

Material returned to the factory for repair that has been modified will not be tested unless the nature and
purpose of the modification is understood by us and does not render the equipment untestable at our repair
facility. We will reserve the right to deny service to any modified equipment returned to the factory for repair
regardless of the warranty status of the equipment.