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Lectrosonics AM4 Operating Instructions And Owner's Manual

Manual is about: 8 Channel Automatic Matrix Mixer

Summary of AM4

  • Page 1

    Am8/4 8 channel automatic matrix mixer lectrosonics, inc. Rio rancho, nm www.Lectrosonics.Com operating instructions and trouble-shooting guide.

  • Page 2: Introduction

    2 table of contents introduction ................................................................................................... 2 general technical description ............................................................. 3 installation .............................................................

  • Page 3

    3 8 channel automatic matrix mixer rio rancho, nm – usa general technical description the am8/4 uses a straightforward analog signal path to provide excellent audio performance. This is coupled with a sophisticated microcontroller to implement the automatic mixing, matrix control, and programmable i...

  • Page 4: Installation

    4 installation the am8/4, because it is so highly integrated, is straightforward to install. The following sections explain the installa- tion and wiring, as well as the software setup of the am8/4. Am8/4 audio inputs each of the 8 automatic am8/4 inputs is balanced, and provides 15v phantom power (...

  • Page 5

    5 8 channel automatic matrix mixer rio rancho, nm – usa audio expansion in/out when multiple am8/4s are used in an application, their audio link ports must be interconnected using the audio link in/out connectors on the rear panel of the am8/4. The audio link in/out connector is just to the right of...

  • Page 6: Front Panel Description

    6 when other lecnet devices are used in conjunction with the am8/4s, the lecnet expansion ports of these devices must also be interconnected. Refer to the diagrams above for proper interconnections. The lecnet expansion in and out pinouts are shown below. Pin expansion in function expansion out func...

  • Page 7: Rear Panel Description

    7 8 channel automatic matrix mixer rio rancho, nm – usa rear panel description am8/4 rear panel mic/line inputs 1-8 - accepts balanced or unbalanced signal. Fully balanced differential input, rf filtered. Dir out - provides a line level signal from each individual channel. The direct output is a pos...

  • Page 8: Operating Instructions

    8 operating instructions since most of the parameters used to set up the am8/4 are adjusted using the am8/4 software control panel, the operating instructions include instructions for the use of the software. It’s recommended that you have the software running, either live or in the demo mode, as yo...

  • Page 9

    9 8 channel automatic matrix mixer rio rancho, nm – usa the input control point labeled “rear panel” represents the gain adjustments which can be made from the rear panel programmable inputs. The rear panel gain control is attenuation only, starting at a maximum gain of 0db. The rear panel input gai...

  • Page 10: Am8/4 Control Panel Software

    10 programmable output: used to provide user feedback for certain programmable input functions. A programmable i/o whose function is programmable output will be active (i.E. Conducting to ground) or inactive (i.E. Open) as follows depending on the function of the programmable input with which it is ...

  • Page 11

    11 8 channel automatic matrix mixer rio rancho, nm – usa enter input/output names... - allows names to be assigned to the 10 inputs and the 4 outputs of the am8/4. These names may be up to 15 characters long and are stored in nonvolatile memory in the am8/4. In addition, the names are stored in any ...

  • Page 12

    12 input gain tab the input gain tab allows the input gain and send/react to nom status to be set for each of the 8 automatic input channels, and the input gain to be set for the two line input channels. Gain - allows the input gain level to be trimmed between +15db and -63db, or off. The gain shown...

  • Page 13

    13 8 channel automatic matrix mixer rio rancho, nm – usa input tone control tab the input tone tab allows the low cut frequency and the high frequency cut or boost to be set for each of the 10 input channels. Low cut - sets the low cut corner frequency for each input channel. The low cut filter is a...

  • Page 14

    14 short cut: a right mouse click on a crosspoint gain box will set the crosspoint gain to 0db. Clear matrix (clr) button - clears all matrix crosspoints to the “off” state. Output gain tab the output gain tab allows the output gain levels to be set. Gain, outputs 1 - 4 - allows the output gain to b...

  • Page 15

    15 8 channel automatic matrix mixer rio rancho, nm – usa select different functions. All other parameters are disabled. This eliminates invalid function/applies to settings. Each of the available functions is explained below. Hint: if the function (or any associated inputs, outputs, etc.) of a progr...

  • Page 16

    16 minimum input gain, if it is programmed for less attenuation than “off”), and +5vdc corresponds to 0db. In addition to analog control, this mode can be used to perform input “muting” using a simple toggle switch. To mute input(s), simply connect the toggle switch to connect the programmable input...

  • Page 17

    17 8 channel automatic matrix mixer rio rancho, nm – usa “off”. The gain change resolution is 1db. In the case of increase out 1db, each contact closure will increment the output(s) gains by 1db until 0db is reached. Decrease out 1db will decrement the output(s) gains by 1db until either “off” or re...

  • Page 18

    18 programmable output - sets one of programmable i/os 1-8 to the programmable output mode. Programmable outputs indicate the state of functions controlled by programmable inputs. For example, if programmable i/o 1 is set to mute output 1, setting programmable i/o 2 to programmable output and connec...

  • Page 19: Troubleshooting

    19 8 channel automatic matrix mixer rio rancho, nm – usa application. “off” signifies no lower gain limit. 0db is the maximum value available for min gain, and is equivalent to making rear panel output control inactive. The gain preset scroll bar allows a preset gain to be applied at power on to any...

  • Page 20

    20 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 port lecnet device transmit le...

  • Page 21

    21 8 channel automatic matrix mixer rio rancho, nm – usa serial port commands available 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 “t...

  • Page 22

    22 general device commands get name string - gets the am8/4’s “name” string. 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 (1 hex) host receives 5 bytes: byte 1 is the length of the name string (4 for the am8/4), byte...

  • Page 23

    23 8 channel automatic matrix mixer rio rancho, nm – usa byte 1: bits 0 - 6 of the mask (in the low 7 bits of the byte) byte 2: bit 7 of the mask (positioned in the lsb of the byte) byte 3: bits 8 - 9 of the mask (in the low 2 bits of the byte) byte 4: 0 a “1” in a bit position will apply the gain i...

  • Page 24

    24 matrix crosspoint commands get crosspoint gain - gets the gain associated with a particular matrix crosspoint. Host sends command - 81 (51 hex) host sends 2 bytes: byte 1:input associated with the desired crosspoint. 0 - 10 (0-0a hex), where 0 - 9 corresponds to inputs 1 - 10, and 10 (0a hex) cor...

  • Page 25

    25 8 channel automatic matrix mixer rio rancho, nm – usa set multiple input crosspoint gains to multiple outputs - sets the crosspoint gain from any combination of the 10 inputs to any combination of the four outputs. Host sends command - 89 (59 hex) host sends 6 bytes: bytes 1-4: a 10 bit mask, whe...

  • Page 26: Specifications

    26 specifications inputs: mic/line input type: 8 balanced and rf filtered mic/line input impedance: >2.5k, any gain set ting mic/line input gain range: +15db to -63db, plus mute mic/line input gain settings: 0db, +30db, +50db ein, 20-20k hz: -126db (+50db gain) maximum input level: +20dbu at 0db gai...

  • Page 27: Service and Repair

    27 8 channel automatic matrix mixer 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 i...

  • Page 28: Limited One Year Warranty

    Lectrosonics, inc. 581 laser road rio rancho, nm 87124 usa www.Lectrosonics.Com november 14, 2002 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 doe...