Monroe Electronics 948A User Manual

Model 948A/AX

Cue Tone Receiver

INSTRUCTION MANUAL

Monroe Electronics

100 Housel Ave  Lyndonville  NY 14098

800-821-6001  585-765-2254  fax [phone]

monroe-electronics.com

Printed in USA  Copyright  Monroe Electronics, Inc.

Specifications subject to change without notice

P/N 1340177

9/29/04

TABLE OF CONTENTS

WARRANTY -----------------------------------------------------------------------------------------2
RETURN POLICY-----------------------------------------------------------------------------------2
GENERAL DESCRIPTION ----------------------------------------------------------------------3
INSTALLATION -------------------------------------------------------------------------------------4
OPERATION -----------------------------------------------------------------------------------------6
3185E INSTRUCTION MANUAL ---------------------------------------------------------------8

DESCRIPTION ---------------------------------------------------------------------------------9
SPECIFICATIONS --------------------------------------------------------------------------10
INSTALLATION ------------------------------------------------------------------------------11

Mounting --------------------------------------------------------------------------------- 11
Pin Numbers and Functions -------------------------------------------------------- 11
FIGURE 1 - Edge Connector, Switch and Indicator Locations -----------12
FIGURE 2 - Block Diagram ---------------------------------------------------------12
Audio Input Connection --------------------------------------------------------------13
‘Set’ Input Connection ----------------------------------------------------------------13
‘Reset’ Input Connection-------------------------------------------------------------13
Relay Output Connection -----------------------------------------------------------13
Power Supply Input -------------------------------------------------------------------13

CUSTOMER OPTIONS --------------------------------------------------------------------14

FIGURE 3 - Jumper Locations -----------------------------------------------------15
Input Impedance -----------------------------------------------------------------------15
Input Balanced/Unbalanced --------------------------------------------------------16
5 Minute Restoral ---------------------------------------------------------------------- 16
20 Minute Reset ---------------------------------------------------------------------- 16
Output Relay --------------------------------------------------------------------------- 16
10 Second Pulse -----------------------------------------------------------------------16
Number of Digits to Decode ------------------------------------------------------- 17

Fourth Digit ON/OFF ---------------------------------------------------------------- 17
CODE SELECTION -------------------------------------------------------------------------18
OPERATION ----------------------------------------------------------------------------------18

Operating With a 4-Digit Code --------------------------------------------------------- 18
Operating With a 3-Digit Code --------------------------------------------------------- 19
Operating With a 2-Digit Code --------------------------------------------------------- 19
Operating With a 1-Digit Code --------------------------------------------------------- 19

ADJUSTMENT ------------------------------------------------------------------------------- 19

1

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 TO FACTORY 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
585-765-9330. 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.

2

GENERAL DESCRIPTION

The Model 948A/AX Cue Tone Receiver is a small wall mounted enclosure containing
2 or 3 PC boards, in plus a power unit. The Model 948A contains a Model 3137B
UAD, a Model 3185E Dual Tone Decoder, a Model 3446A Stereo Audio/Video Switch,
with a, wall mounted power supply. The Model 948AX contains all the above parts,
EXCEPT the Model 3137B UAD.

The units are designed to switch a Stereo Audio-follow-Video or IF/RF signal if the
proper DTMF tone sequence is entered. These signals may be received from various
audio sources, including sattelite audio or microwaves. The Model 948A may also be
controlled via a dial up telephone line.

3

INSTALLATION

1. Remove the two screws holding the cover on the 948A and remove the cover.

2. The Model 3185E is factory set to decode a 4-digit ‘ON’ code sequence and a 4­digit ‘OFF’ code sequence. The first three digits in the code sequence are
determined by the hexadecimal rotary switches on the front edge of the 3185E. 0
through D select the corresponding DTMF digit to be decoded. The letter ‘E’ on the
rotary switch represents the ‘*’ DTMF digit and the letter ‘F’ on the rotary switch
represents the ‘#’ DTMF digit. The fourth digit for the ‘ON’ code sequence is factory
set to ‘*’, and fourth digit for the ‘OFF’ code sequence is set to ‘#’. Set the rotary
switches on the 3185E to the Cue Tone sequence you wish to decode. See the
3185E manual for more information.

3. The Cue Tones may be received by the Model 948A from the alternate program
source (baseband audio) or other audio subcarriers. If so, connect an audio cable
from the Cue Tone source to TB1 #4 with common on TB1 #5 (ground). If installing
a 948AX, connect Cue Tone Audio to TB2 #8 and TB1 #5 (ground).

4. Connect the video from the main program source to the normally closed (NC) F
connector on the 3446A card.

5. Connect the video from the alternate program source to the normally open (NO) F
connector on the 3446A.

6. Connect the modulator video input to the common (COM) F connector on the
3446A card.

7. Connect the Left and Right Audio inputs, and the Audio output, to the screw
terminals on the mother board as shown in the accompanying schematic.

8. Connect the White (+12) lead from the power supply to TB1 #7 and the Black
(GND) lead from the power supply to TB1 #6.

9. If your model is a 948A, the audio tones may be supplied over the telephone line
and/or from an audio source as described above. If the signals come ONLY over
the telephone line, disregard item 3 above.

10. Attach the Tip and Ring lines from the POTS line to the connections as shown on
the attached drawing.

11. The 3137B is set to answer on 2 rings, and hang up on current disconnect when
the calling party hangs up. See the 3137B manual for more information.

4

Open

Video Switch PC Board

Normally Common Normally
Closed

5