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Accessory
OPERATING GUIDE
The
UM138l
modulator and isolation switch designed
for use with the Texas Instruments Home
Computer.
your own television set (color or black
white) can be used as
display, eliminating the need for
monitor for your Home Computer.
Copyright © 1981 Texas Instruments Incorporated
unit is a combin ation video
With
the Video Modulator,
computer
a
a
&
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Table of Contents
Related Manuals for Texas Instruments UM138l
Summary of Contents for Texas Instruments UM138l
- Page 1 Accessory OPERATING GUIDE UM138l unit is a combin ation video modulator and isolation switch designed for use with the Texas Instruments Home Computer. With the Video Modulator, your own television set (color or black & white) can be used as...
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Page 2: Installation
The UM1381 Video Modulator is designed to be used with a standard television set having 300-ohm, flat, twin-lead antenna connections. If you have a coaxial antenna system that connects directly to your with a round screw-on connection, you television set have a low-impedance antenna system (typically 75 ohms). - Page 3 6" TELEVISION � INTERCONNECT CABLE (See Step 2) VHF ANTENNA TERMINALS (See Step 3) COMPUTER INTERFACE CABLE WITH 5-PIN JACK (See Step 4) No special tools are required to connect the compact, easy- to- install Video Modulator to your television set. A screwdriver is the only tool you'll need.
- Page 4 Step 3. Connect the television VHF antenna cable to the Video Modulator antenna terminals, marked ANTE NNA, and tighten the screws. Step Plug the computer interface cable's 5-pin jack into the 5-pin socket on the right side of the back of the main console (when console is viewed from rear).
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Page 5: Operation
OPERATION There are two switches on the Video Modulator. At one end is a channel select switch, marked CHANNEL SELECT 4 3. Set the switch to either Channel 3 or 4. If there is a television station operating on one of these channels in your area, Then, set select the other channel on the modulator. -
Page 6: Protection Indicator
That's all there is to it. Turn on your television set and computer, and you're ready to start. Adjust the controls (including "fine tuning") of the television set for optimal picture clarity and most pleasing colors, just as you would for normal television reception. You can leave the Video Modulator attached to your television set all the time. - Page 7 Solution Steps Problem Check the wall outlet where the television set is plugged in. Is it ''live''? (Test it by plugging in a lamp.) 3. Be sure the TV ANTENNA/ MODULATOR switch is set to MODULATOR. Be sure the Channel Select switch on the modulator is set to the same channel as the television set.
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Page 8: Service Information
SERVICE INFORMATION If the UM138l Video Modulator is in warranty, it will be repaired or replaced under the terms of the Limited Warranty. Out-of-warranty units in need of service will be repaired or replaced with reconditioned units (at TI's option), and service rates in effect at the time of return will be charged. -
Page 9: For General Information
For technical questions, you can call 806- 7 41- 2 663. Please note that this is not a toll- free number, and we cannot accept collect calls. As an alternative, you can write to: Consumer Relations Department Texas Instruments Incorporated P.O. Box 53 Lubbock, Texas7940 8... -
Page 10: Warranty Coverage
(at TI's option) when the unit is returned by prepaid shipment to a Texas Instruments Service Facility listed below. The repaired or replacement unit will be warranted for three months from date of repair or replacement. -
Page 11: Warranty Disclaimers
SALE, INCLUDING BUT NOT LIMITED IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE ABOV.E THREE MONTH PERIOD. TEXAS INSTRUMENTS SHALL NOT BE LIABLE FOR LOSS OF USE OF THE PRODUCT OTHER INCIDENTAL OR CONSE UENTIAL COSTS,... - Page 12 Geophysical Services Incorporated Shelley Road Richmond Hill, Ontario, Canada L4C5G4 Consumers in California and Oregon may contact the fo l lowing Texas Instruments offices f o r add it i o nal assistance or information. Texas Instruments Consumer Service 831 South...
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