Monroe Electronics R175 User Manual

Model R-175 Vertical Interval Switch

Installation

Connect the COM outputs on
the R175 to your equipment’s
inputs.

Connect your primary
audio/video signal sources to
the PRI inputs on the R175.

Connect your secondary
audio/
video signal sources to the
SEC inputs on the R175.

Screw the wires from the
supplied
power pack to the two
connector power input on the
rear of the unit.

A TTL level control signal or
a debounced dry contact
across GND and SET on the
EXT CTRL connector will
change the output from the
primary to the secondary, if a
baseband video signal of at
least 0 dB is present at
primary input.

Relay Connection

Connect the normally open
(NO) contact to SET.

Connect the relay common
(COM) to GND.

Open Collector:

Connect your transistor’s
collector to SET and the
transistor’s emitter to GND.

Operation

The R175’s primary (PRI)
inputs are normally
connected to the common
(COM) outputs. It remains in
this state until the SET input
is connected to GND, and a
baseband video signal of at
least 0 dB is present at the
primary input. The unit will
switch during the vertical
blanking interval of the video
signal. This connects the
secondary (SEC) input to
common (COM) for the
duration of the connection.
The LEDs on the front panel,
when lit, indicate which input
is connected to the output.

Specifications

Video

75 ohms ; ‘BNC’ connectors
>80 dB isolation at 5 MHz

Video Return Loss
> 25dB

Audio

Balanced stereo; screw
terminals;
>90 dB isolation

Control Input

1 mA maximum to GND.

Power Requirement

117VAC ±10%, 60 Hz.
Power pack output; 12 VAC

Physical

1.75"H x 19"W x 4"D
Weight 2 lbs.

Design and specifications are subject to
change without notice.

Warranty

Monroe Electronics, Inc. warrants to the owners, each instrument and sub­assembly 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, EXPRESSED,
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 Policy

Materials returned to Monroe must have a Return Material Authorization

number. To obtain a RMA number, contact our A/V Switching & Control
Customer Service at 585-765-2254 or fax [phone]. Customers have 30
days to determine that the product ordered fills their need and performs as
described in Monroe’s literature. Units returned for approved repair or credit,
must be in the original packaging including all parts and paperwork plus be in
very good physical condition. If not, the customer is billed the cost to refurbish
the unit and for missing accessories and merchandise. No products may be
returned for exchange or credit after 12 months of the shipment date. Monroe
reserves the right to repair or replace units under warranty.