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Lectrosonics TH2 Operating Instructions Manual

Manual is about: DIGITAL TELEPHONE HYBRID

Summary of TH2

  • Page 1

    Th2 digital telephone hybrid lectrosonics, inc. Rio rancho, nm operating instructions and trouble-shooting guide.

  • Page 2: Introduction

    2 table of contents introduction ................................................................................................... 2 fcc part 68 compliance ............................................................................... 3 general technical description .................................

  • Page 3: Fcc Part 68 Compliance

    3 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 registration number and ringer equivalence number (ren) for this equipment. If ...

  • Page 4

    4 general technical description the th2 is built around a powerful dsp which performs all internal calculations using 24 bits, providing an internal dynamic range of 144db. The dsp implements both the transmit/receive signal separation, as well as a sophisticated echo suppression algorithm. The lect...

  • Page 5: Installation

    5 digital telephone hybrid rio rancho, nm – usa installation pwr in (ch40) out in expansion 20 vac lecnet (rs232) e x p a n l o c a l input local sound reinforcement th2 rear panel am8 rear panel switch in "expan" position switch in "master" position am8 rear panel switch in "slave" position pwr in ...

  • Page 6

    6 pwr in (ch40) out in expansion 20 vac lecnet (rs232) e x p a n l o c a l line phone mix level + – in out + – local min out output 8-channel mixer th2 rear panel switch in "local" position input local sound reinforcement optional unbalanced interconnec- tion with non-lectrosonics mixers (figure 4) ...

  • Page 7: Front Panel Description

    7 digital telephone hybrid rio rancho, nm – usa front panel description figure 6 - th2 front panel power - turns the th2 on/off. After the power is turned on, all leds, with the exception of the privacy led, will turn on momentarily. Receive level - adjusts the receive volume level. The sig led next...

  • Page 8: Rear Panel Description

    8 rear panel description figure 8 - th2 rear panel pwr in - connects to the ch40 power supply supplied with the unit. Local/expan switch - sets the th2 for use in conjunction with either the am8 (expansion mode) or any other line level input/output (local mode). Expansion in/out - allows the th2 to ...

  • Page 9: Operating Instructions

    9 digital telephone hybrid rio rancho, nm – usa operating instructions setup of the th2 consists of choosing the front panel dip switch options, setting transmit and receive levels located at the front panel, and connecting the input/output in the proper configuration. Using the lecnettm control is ...

  • Page 10

    10 th2/am8 system setup procedure when used in conjunction with one or more am8’s, the following procedure will insure optimum operation. The system architecture provides for algorithm-controlled gain paths that require the signal levels received by the th2 and the signal levels within the am8 (micr...

  • Page 11: Troubleshooting

    11 digital telephone hybrid rio rancho, nm – usa 5) adjust the transmit level trim pot. Starting from the mid position on the transmit level trim pot, adjust for the proper transmit level. The transmit sig and lim leds are useful tools to determine the appropriate transmit level. Make sure that tran...

  • Page 12

    12 serial cable wiring diagram wiring diagram, 9 pin d-sub lecnet device to pc 3.5mm stereo plug 9 or 25 pin female d-subminiature s r t 1 2 3 4 5 6 7 8 9 lecnet port lecnet device transmit lecnet device receive gnd tip ring sleeve host serial port (pc) n/c n/c wiring diagram, 25 pin d-sub lecnet po...

  • Page 13

    13 digital telephone hybrid rio rancho, nm – usa serial port software commands 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...

  • Page 14

    14 general device commands get device name - causes the th2 to send its “name” string back host sends command - dec 1 or hex 01 host receives data bytes: byte 1 is the length of the name string (3 for th2), bytes 2, 3, and 4 are the ascii repre- sentation for the device name “th2”, i.E. Dec (84, 74,...

  • Page 15

    15 digital telephone hybrid rio rancho, nm – usa pc remote control commands set pc remote volume up flag host sends command - dec 15 or hex 0f host sends 1 byte representing the pc remote volume up status. This byte has a value of “1” when the volume up button is pressed. Set pc remote volume down f...

  • Page 16: Specifications

    16 specifications connectors: audio: 8-pin mini din and depluggable terminal blocks telephone/line: rj-11 modular wired remote control: db-9 output audio: actively balanced output impedance: 200 ohms, balanced; 100 ohms unbalanced input audio: actively balanced, rf filtered input impedance: 20k ohms...

  • Page 17: Service and Repair

    17 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 18: Limited One Year Warranty

    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 which has been abused or damaged by careless handling or shipping. This warr...