Related Manuals for LDG DTS-4
Summary of Contents for LDG DTS-4
- Page 1 LDG DTS-4 Desktop Coaxial Switch LDG Electronics 1445 Parran Road, PO Box 48 St. Leonard MD 20685-2903 USA Phone: 410-586-2177 Fax: 410- 586-8475 ldg@ldgelectronics.com www.ldgelectronics.com...
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Page 2: Table Of Contents
Congratulations on selecting the LDG DTS-4 desktop coaxial switch. The DTS-4 is a breakthrough product, electronically switching your rig between four antennas, and automatically grounding all inputs when your rig is off. The DTS-4 can be mounted on your operating desk, or operated remotely using the LDG DTS-4R Remote Control. -
Page 3: Jumpstart, Or "Real Hams Don't Read Manuals
Jumpstart, or “Real hams don’t read manuals!” Ok, but at least read this one section before you transmit: 1. Attach the RF input jack (center connector, marked TX) to your transmitter or transceiver with a 50 ohm coaxial jumper cable. 2. -
Page 4: Getting To Know Your Dts-4
Getting to know your DTS-4 Your DTS-4 is a quality, precision instrument that will give you many years of outstanding service; take a few minutes to get to know it. On the front panel there are four buttons and four LED indicator lights. - Page 5 The 2.5 x 5.5 mm jack coaxial DC power connector is on the right. The ground connection is via the wingnut. The radio sense input is a second 2.5 x 5.5 mm coaxial jack, and the control cable is a 1/8" stereo jack; the control cable is included with the DTS-4R remote.
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Page 6: About The Radio Sense Feature
Radio Sense is an exclusive LDG feature that automatically grounds all inputs when you turn your radio off. A sense line connects the DTS-4 to any DC out port on your radio providing at least 2 volts DC at 1 ma; most modern radios have at least one such DC output. Check your radio’s manual for more information on which jack may provide DC voltage when the radio is on. -
Page 7: Installation
Installation The DTS-4 and -4R are intended for indoor use only; they are not water resistant. If you use them outdoors (Field Day, for example) you must protect them from rain. Position your DTS-4 in a convenient spot on your operating desk. If you are using the DTS-4R remote, you can position the DTS-4 switch anywhere within reach of the control cable. -
Page 8: Operation
DTS-4 will automatically ground all inputs. If you press an antenna selection button while the DTS-4 is grounded in Radio Sense mode, lights 1 and 2 will blink three times to remind you; the antenna will not be selected. - Page 9 Using this function along with the Radio Sense function of your DTS-4 insures that the rig will be protected even if you forget to turn it off. If you walk away from your radio and forget to turn it off, the rig will switch itself off after the specified time.
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Page 10: Remote Control Protocol
Remote Control Protocol The control port of your DTS-4 is, in fact, a serial TTL I/O port compatible with protocol that is standard with PC serial ports. This section documents the control protocol; you can write your own software to control the switch. The protocol below describes the dialog between the DTS-4R remote and the DTS-4 switch. - Page 11 Some are based on the popular and inexpensive MAX-232 integrated circuit. For the interface, the DTS-4 uses a 1/8” stereo jack for the serial connection. The shield is ground, the ring is signals from the DTS-4 to the remote and the tip is signals from the remote to the DTS-4.
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Page 12: Care And Maintenance
If you need to return your DTS-4 to us for service, package it carefully, keeping in mind that we will re-use your packaging to return the unit to you. A self-addressed return-shipping label, while not required, will help insure speedy and accurate delivery of your repaired unit.
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