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Lectrosonics EQ1 Operating Instructions And Troubleshooting Manual

27 band automatic equalizer
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EQ1 and EQ2
27 BAND AUTOMATIC EQUALIZER
OPERATING INSTRUCTIONS
and trouble-shooting guide
LECTROSONICS, INC.
Rio Rancho, NM

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  • Page 1 EQ1 and EQ2 27 BAND AUTOMATIC EQUALIZER OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM...

  • Page 2: Table Of Contents

    INTRODUCTION The EQ1 and EQ2 are 27 band, constant-Q, automatic equalizers. The EQ1 has a 2 line LCD screen for user interface, while the EQ2 is a blank faced unit. Both of the units have the capability to inject pink noise into a sound system, and to measure and adjust the system equalization to a user specified target curve.

  • Page 3: General Technical Description

    AutoEQ process. An RS-232 port is available to allow many of the functions of the EQ1/EQ2 to be controlled either by a computer or a dedicated control system (such as the AMX or Crestron systems).

  • Page 4: Installation

    Installing the EQ1/EQ2 properly is simple, and only requires attention to a few issues. The EQ1/EQ2 should be used in a grounded metal rack. The Expansion Out port of the EQ1/EQ2 should be connected to the Expansion In port of the next device.

  • Page 5: Front Panel Description

    (F1, F2, and F3), the factory values may be reviewed using this menu option. EQ Status (EQ In/Out) - Bypasses the equalizer and low cut filter of the EQ1. This is useful for A/B compari­ sons between the equalized and unequalized systems.

  • Page 6: Rear Panel Description

    EXPANSION IN/OUT - Connects the EQ1/EQ2 to other LecNet compatible devices. The Expansion connection to the EQ1/EQ2 is only necessary if the device is used with a computer. The EQ1/EQ2 Expansion Out port should be connected to the last LecNet in the chain (see Figure 2 above).

  • Page 7: Operating Instructions

    DPS system. 1) The desired EQ curve should be set first. With the EQ1, and EQ curve may be set manually either from the front panel display and controls, or using a PC or compatible. The EQ2 may only be set up using a PC. When set up from the front panel display and controls, the Adjust EQ Curve menu option is used.

  • Page 8: Service And Repair

    There are no adjustments inside that will make a malfunctioning unit start working. LECTROSONICS service department is equipped and staffed to quickly repair your equipment. In-warranty repairs are made at no charge in accordance with the terms of the warranty. Out of warranty repairs are charged at a modest flat rate plus parts and shipping.

  • Page 9: Specifications

    27 Band Automatic Equalizer SPECIFICATIONS EQ In: Balanced, RF protected, 40k Ohm impedance Ref Mic In: Balanced, RF protected, 1.5k Ohm impedance +15V phantom power (always present) Thru Out: Parallel to EQ In, provides a pre-EQ output Main Out: Balanced, 200 Ohm output impedance EQ Type: 27 band, 1/3 octave, on ISO centers from 40Hz to 16kHz Filter Type:...

  • Page 10: Serial Cable Wiring Diagram

    Port If you are using an AMX system to control your LecNet (PC) equipment, you'll want to purchase the Lectrosonics PT3 Protocol Translator. The PT3 connects between the AMX bus and any LecNet equipment. With the PT3, the LecNet equipment looks ust like native AMX equipment.

  • Page 11: Serial Port Commands Available

    Valid address values are 128-254 (80h-FEh). 255 (FFh) is an invalid address and must not be used. Because the EQ1/EQ2 will interpret any single data byte whose value is greater than 127 as an address, single byte data (as opposed to addresses) sent from the host must be in the range of 0-127. If a data value needs to be output that exceeds 127, two bytes are output such that the first byte is the lower 7 bits of the 8 bit value, and the second byte is 1 if the MSB of the data byte is 1, or 0 if the MSB of the data byte is 0.
  • Page 12 Host sends command - 1 Host receives data bytes: Byte 1 is the length of the name string (3 for the EQ1 and EQ2), bytes 2, 3, and 4 are the ASCII values for “EQ1” (69,81,49).
  • Page 13 Set EQ Mode (Active/Bypass) - Sets the EQ to Active or Bypass Mode. In Active mode, the EQ functions normally. In Bypass, all EQ bands are set to flat, and the Low Cut Filter is also defeated. The current EQ curve is restored when the EQ1 is switched from Bypass to Active. Host sends command - 5...
  • Page 14 Set Pop Suppress Setting - Allows the pop suppress setting to be adjusted. Range is from 0-80 plus 127. 0-80 corresponds to -40dBu to 0dBu threshold values in .5dB steps, and 127 is 100dB mute (Pop suppress off). Byte 1 is the new setting.
  • Page 15 27 Band Automatic Equalizer Set Input Source - Allows the EQ1 input source to be set. Host sends command - 16 Host sends 2 bytes: Byte 1: 0 - Change current setting 1 - User Target Curve 1 2 - User Target Curve 2...

  • Page 16: Warranty

    This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot correct the defect in your equipment, it will be replaced at no charge with a similar new item.

This manual is also suitable for:

Eq2

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