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- Operating Instructions Manual
Lectrosonics TH3 Operating Instructions Manual
Summary of TH3
Page 1
Th3 digital telephone hybrid lectrosonics, inc. Rio rancho, nm operating instructions and trouble-shooting guide.
Page 2: Introduction
2 table of contents introduction .................................................................................................. 2 front panel ..................................................................................................... 3 rear panel ..........................................
Page 3: Front Panel
3 digital telephone hybrid rio rancho, nm – usa front panel the tx level control is used to set the proper amount of local signal, with the aid of the tx level meter. The telephone rx level control is used to set the proper telephone receive level, with the aid of the rx level meter. The codec rx le...
Page 4: Rear Panel
4 rear panel the pwr in jack must be attached to an appropriate power source, such as the included ch40 wall transformer. The expansion out and expansion in jacks are used to attach the th3 to other lecnet equipment (e.G. Am8 or am16 mixers). The lecnet (rs232) jack may be connected to the serial po...
Page 5
5 digital telephone hybrid rio rancho, nm – usa brief technical description the th3 provides a high-quality, flexible and powerful interface to a telephone line, a 4-wire video codec, or both simultaneously with bridging. Each interface offers basic controls to connect, invoke privacy (selective mut...
Page 6: Th3 Wiring Guide
6 th3 wiring guide following are example wiring diagrams for various types of installations. Example 1: am8 mixer in this example, the th3 is connected to an am8 mixer, and both local and remote signals are amplified. The single lecnet cable passes signals both to and from the am8. Am8 switch in mas...
Page 7
7 digital telephone hybrid rio rancho, nm – usa example 3: two am8 mixers in this example, the th3 is connected to a pair of am8 mixers. Both local and remote signals are amplified. The single lecnet cable passes signals both to and from the am8. Note the interconnection of the mixers, with the last...
Page 8
8 example 5: non-lectrosonics mixer in this example, the th3 is connected to a third-party mixer, and both local and remote signals are amplified. Note that the combined local and remote signal is derived from the record out jack on the th3. This is valid and completely functional, but with this con...
Page 9: Basic Operation
9 digital telephone hybrid rio rancho, nm – usa basic operation this chapter describes the th3’s most essential user functions. The word “interface” is used here to distinguish between the controls associated with the telephone (“telephone interface”) and those associated with the 4-wire codec (“cod...
Page 10: Level Setting Procedure
10 privacy feature the privacy buttons mute the respective interface’s transmit signal, receive signal, or both, depending on the interface’s current privacy mode. As the privacy feature is engaged, the privacy led flashes a confirmation to indicate the current privacy mode, then glows steadily. The...
Page 11: Th3 Software Control Panel
11 digital telephone hybrid rio rancho, nm – usa establish a telephone call (the basic operation chapter tells how to do this), preferably to an actual person, group or location to which this th3 will typically connect. If this is not possible, a call may be placed to a recorded message service. Pre...
Page 12
12 starting the control panel software to start the th3 software control panel, it is first necessary to run lecnet master pro. If lecnet master pro does not immediately detect the th3, check to make sure that the lecnet pc cable is connected from the pc’s com port to the th3. Check also that lecnet...
Page 13
13 digital telephone hybrid rio rancho, nm – usa the receive volume is implemented as a slider but it selects the receive volume in the same way that the front panel buttons do, with a range of -12 to +6 db in 1 db steps (a total of 19 positions). The echo suppression sliders choose the amount of ec...
Page 14
14 the th3 signal routing window the th3 signal routing window permits the th3’s internal signal routing to be modified for unusual applications. The default settings are as shown, with all inputs and outputs enabled, and the supplementary echo canceller inserts bypassed. Most applications do not re...
Page 15
15 digital telephone hybrid rio rancho, nm – usa serial port hardware and software serial port hardware connection the serial port on the th3 is a minimal rs-232 implementation. The figure shows the wiring diagram to accommo- date interconnection with either a 9- or a 25-pin serial port on a pc or o...
Page 16: Lecnet Serial Port Protocol
16 lecnet serial port protocol all lecnet devices use a modification of the typical one-to-one connection between two rs-232 compatible devices. Lecnet devices have both an rs-232 transmitter and receiver section. The transmitter section is “tri-stated”, or placed in a high impedance mode, until the...
Page 17
17 digital telephone hybrid rio rancho, nm – usa general device commands get device name - causes the th3 to send its “name” string back. The first data byte is the length of the name string, and the rest of the data bytes are the device name. Host sends command - 1 host receives data bytes: byte 1 ...
Page 18
18 set codec privacy - engages or disengages codec privacy feature. This command has no effect if the codec interface is not connected. Host sends command - 36 host sends byte: 0 to disengage privacy feature, 1 to engage get codec privacy - retrieves privacy status of codec interface. Host sends com...
Page 19
19 digital telephone hybrid rio rancho, nm – usa set auto answer - configures the th3’s automatic telephone answering feature. Host sends command - 56 host sends byte: 0 to disable the feature, 1-10 to specify a ring count on which to answer the telephone. Get auto answer - retrieves the current sta...
Page 20
20 get audible ring chime - retrieves status of audible ring chime feature. Host sends command - 69 host receives data byte: 0 if feature is disabled, 1 if enabled set phone echo suppression - selects amount of echo suppression applied to telephone interface. Host sends command - 70 host sends byte ...
Page 21
21 digital telephone hybrid rio rancho, nm – usa set codec rx atten - performs fine adjustment of codec receive volume. Host sends command - 82 host sends byte in range 0-54, 126 or 127: 0 represents +6 db, 18 represents 0 db, 54 represents -12 db. All values in between 0 and 54 are valid, represent...
Page 22: Accessories
22 accessories standard 21552 15 ft. Telephone cable with rj-11 connectors 21553 9-pin male d-sub connector 21554 shell for 9-pin d-sub connector 21551 12" mini-din lecnet expansion cable 21529 9-pin d-sub to stereo mini plug lecnet pc cable 40024 ch-40 wall transformer lnetwin lecnet software m-th3...
Page 23: Specifications
23 digital telephone hybrid rio rancho, nm – usa privacy modes the privacy switch on the th3 can do three different things, based on the interface’s current privacy mode. The three modes are, “mute tx only”, “mute rx only”, and “mute tx and rx”. Supplementary echo canceller the term “supplementary e...
Page 24: Troubleshooting
24 troubleshooting the following are general guidelines and initial suggestions. If a problem persists, please refer to the section, service and repair. The automatic disconnect feature is disconnecting the line inappropriately. Ensure that the telephone line is connected to the telephone line jack ...
Page 25: Fcc Part 68 Compliance
25 digital telephone hybrid rio rancho, nm – usa fcc part 68 compliance this equipment complies with part 68 of the fcc rules. On the rear panel of this equipment is a label that contains, among other information, the fcc registra- tion number and ringer equivalence number (ren) for this equipment. ...
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Page 27: Service and Repair
27 digital telephone hybrid rio rancho, nm – usa service and repair if your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check out the intercon-...
Page 28: Limited One Year Warranty
Lectrosonics, inc. 581 laser road rio rancho, nm 87124 usa january 17, 2001 limited one year warranty the equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment ...