Table of Contents OVERVIEW............................................................................................................................................................... 3 SYSTEM FEATURES................................................................................................................................................ 3 KNOWING YOUR TRX-742 ...................................................................................................................................
MEDIA ..................................................................................................................................................................... 21 Media Capacity...................................................................................................................................................................................................................... 21 Recording Format ........................................................................................
Overview The TRX-742 is a plug-on style digital wireless microphone with interchangeable cones to support all professional microphone varieties – mono analog, stereo analog, AES and AES42 – making it an ideal choice for wireless transmission from boom poles or directly from handheld dynamic microphones. The TRX-742 comes standard with a built-in backup recorder, timecode reader / generator and the ability to receive timecode and remote control commands via the IFB100, Nomad, and/or ZaxNet.
Knowing your TRX-742 1 2 34 5 6 7 8 1. SSMA Antenna Connector 2. LCD Display 3. Media Slot To insert a card, with the screen facing you, turn the card so the finger contacts are facing you and down toward the slot. Insert it into the slot and press it down until you here a slight click. To remove it, press it in until you hear the same click again. 4. INC / Record Key • Increases the parameters of a menu item. • When in the Home Screen pressing INC with the CARD key will put the TRX-742 into record.
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Attaching the Input Cone The Input cone will slide straight on to the base and will get fastened with two screws. To attach the cone: • Line up the two screw holes on the cone with the holes on the base. • Push the cone firmly in place so that the multi-pin connector engages. • Tighten the two screws.
Zaxcom TRX742 Manual Home Screen Home Screen Frequency 567.4 ZaxNet Status Transport Status RX STOP G Battery Level Input Audio Meter Gain Meter Indications -20, -10, 0 dBFS Frequency – Displays the transmit frequency of the TRX-742. If the TRX-742 is being used in RECORD ONLY mode “NOTX” will be displayed. ZaxNet Status • RX – The TRX-742 is set to receive ZaxNet timecode and commands. • TX – The TRX-742 is transmitting ZaxNet timecode and audio.
Zaxcom TRX-742 Manual Main Menu Main Menu Navigating the Main Menu • Press the MENU Button to enter the menu. • To advance to the next menu press the MENU Button again. Exiting the Main Menu • To exit the menu at any time press and hold the MENU button for 1.5 seconds Audio Gain GAIN 20dB Analog Gain Page DGAIN 20dB Digital Gain Page This menu sets the gain of the incoming audio. If you are using a digital cone you will be controlling the gain digitally.
Zaxcom TRX-742 Manual Main Menu Timecode Frame Rate TIMECODE 23.98 GEN 01:02:34:01 This menu sets the timecode frame-rate that will be recorded. The TRX-742 will lock to and record all standard Timecode frame rates. • 23.98, 24, 25, 29.97DF, 29.97DF, 30 DF, 30 NDF Phantom Power PHANTOM POWER: OFF This menu will turn ON / OFF 48 volts of phantom power supplied to the connected microphone.
Zaxcom TRX-742 Manual Extended Menu Extended Menu Navigating the Extended Menu • Press and hold the MENU key while powering up the unit. • Pressing the MENU key will advance you to the next menu item. Exiting the Extended Menu • Cycle the power Or • Hold down the MENU key to get back to the EXTENDED MENU home page then press the INC key. UHF Signal Format TX FORMAT: US MONO This menu adjusts the transmission format • US MONO - This format is used for mono transmission.
Zaxcom TRX-742 Manual Extended Menu Power Roll POWER ROLL: OFF This menu adjusts the Power Roll setting of the TRX-742. Power Roll will allow the transmitter to stay in a lower transmit power setting to conserve battery power, then when you begin to record the TRX-742 will increase the transmit power. • OFF – Power roll is disabled • DIVA TRIGGER – A command from a Zaxcom recorder will set the TRX-742 to full power.
Zaxcom TRX-742 Manual Extended Menu IFB Receive to Transmit time IFBRX RXTO TO TX: IFB TX: The TRX will receive ZaxNet only and NOT transmit ZaxNet TC and audio. NORMAL RX NORMAL RX IFB RX TO TX: 0 SECS: TX ONLY IFBRX RX TO TO TX: TX: IFB 20SECS SECS 20 The TRX will transmit ZaxNet TC and audio only and will NOT receive wireless TC. Adjustable from 1 up to 20 Seconds.
Zaxcom TRX-742 Manual Extended Menu ZaxNet IFB Transmit frequency IFB TX FREQ: 2.420 This is where you set the ZaxNet transmit frequency. This is the frequency that the transmitter will broadcast timecode and ZaxNet audio on for the purpose of confidence audio monitoring via an ERX receiver or Nomad. Note - the expected range will be less than 30 feet. IFB Receive Pulse – this menu will only appear if IFB is set to go into transmit mode.
Zaxcom TRX-742 Manual Extended Menu Format Recording Card PRESS UP KEY 5X TO ERASE CARD This menu will allow you to erase and format the micro SD card. IMPORTANT: Even though many cards are sold preformatted, you must format the card in the transmitter prior to recording. Only cards formatted in the unit will work properly. NOTE: This menu will only appear if a card was inserted prior to booting up. Also if the micro SD card is removed this page will not appear. To Format a Card: 1.
Zaxcom TRX-742 Manual Extended Menu Time Code Source TC SOURCE: IFB (RF) This menu selects how the TRX-742 will receive its timecode. • IFB (RF) – The TRX-742 will receive timecode via ZaxNet being broadcast from Nomad, an IFB100/200, another TRX transmitter or a ZFR recorder. • AUDIO INPUT– The TRX-742, with a proper cable, will receive timecode via the microphone input. When timecode is connected, it takes the TRX approximately three seconds to recognize the TC.
Zaxcom TRX-742 Manual Extended Menu Dynamics DYNAMICS Dynamics OFF DYNAMICS PARMS ON When the Parameters are ON you can adjust the Dynamic Menu The Dynamics is a soft knee compressor that is located after the analog to digital converter. The Dynamics will limit the dynamic range to prevent clipping during occurrences of loud audio. Dynamics is comprised of both a compressor and an expander, which operate jointly.
Zaxcom TRX-742 Manual Extended Menu Phantom Power PHANTOM POWER: OFF This menu will turn ON / OFF 48 volts of phantom power supplied to the connected microphone. Battery Type BATTERY TYPE: NIMH QRX This menu adjusts the battery type you are using so the receiver can properly display the remaining battery capacity. • The settings are NIMH, Lithium and Alkaline (Displayed as “ - - - -“) NOTE: In the menu you will see “ENG” and “QRX” options for these battery types as well.
Zaxcom TRX-742 Manual Extended Menu IFB Remote Control- this menu will not appear if the IFB settings allow the TRX to go into transmit mode. ALLOW IFB REMOTE CONTROL: ON This menu turns ON / OFF if the TRX-742 will accept remote control commands via ZaxNet. IFB Jam Threshold IFB IFBJAM JAM THRESH THRESH 1000 (DEFAULT) 1000MS MS(DEFAULT) This menu sets how much the timecode has to jump before a new file is forcibly created.
Zaxcom TRX-742 Manual Extended Menu TX Disable TX DISABLE: NORMAL TX MODE • Record Only Mode – This will set the TRX-742 to act as a standalone recorder and will not transmit any RF audio on the UHF band. • Normal TX Mode – This will set the TRX-742 to both transmit RF audio and record on its internal SD card. Low Battery Stop LOW BATT STOP: NEVER STOP LOW BATT STOP: 5 MINUTES This menu sets the amount of time after a low battery warning the TRX-742 will close the current file and stop recording.
Zaxcom TRX-742 Manual Extended Menu Name NAME: SN1234 This menu changes the name of the TRX-742. The name entered into the unit becomes part of the name of the audio files generated by the unit and is also included in the metadata of the BWF file. Naming the unit aids in identifying the files from several different wireless. The maximum Name length is 8 characters. You can select any letter or number and can even use spaces. To set/change the name: 1.
Zaxcom TRX-742 Manual Media Recording Media While any size card will work we recommend using a 4GB micro SD card. We also recommend that you buy a brand name card such as Transcend, SanDisk, or Delkin. You should also buy your cards from a reputable dealer because counterfeit cards exist and can cause recording issues. We also recommend that you test your card before taking them out into the field. Here is a testing procedure to determine if the card will function correctly: 1.
Zaxcom TRX-742 Manual Firmware Firmware Each unit is shipped with the latest firmware version installed. As newer firmware becomes available, it can be downloaded from the Zaxcom website: http://www.zaxcom.com/software-updates Newer version of Beta software may be found on the Zaxcom Forums: http://www.zaxcom.com/forum Each time a unit is powered up, the firmware version number is displayed briefly on the LCD screen.
Zaxcom TRX-742 Manual Firmware Updating an ERX with your TRX-742 Your TRX-742 can be used to update the software in a Zaxcom ERX receiver. Your TRX must be running version 7.02 or higher to do so. 1. Format a card in your TRX. 2. With a computer perform the following: A. Delete the “DELETE.ME” file on the card B. Download the ERX firmware “ERX-XXX.bin” from the Zaxcom website and load it onto a card formatted by the TRX. 3. Insert the card into the TRX. 4.
Zaxcom TRX-742 Manual Wiring Configurations Wiring Configurations 24
Zaxcom TRX-742 Manual Antenna Cutting Chart Antenna Cutting Chart 25
Zaxcom TRX-742 Manual Frequency Chart Operating Frequencies ZaxNet Remote Control and Timecode 2.403 to 2.475 GHz UHF Audio Block 20 21 22 23 24 25 26 27 28 29 30 31 32 33 UK Frequency Range 518.0 to 542.0 536.0 to 572.0 560.0 to 590.0 590.0 to 614.0 614.0 to 644.0 638.0 to 668.0 662.0 to 692.0 686.0 to 722.0* 722.0 to 746.0* 740.0 to 770.0* 764.0 to 794.0* 794.0 to 818.0* 818.0 to 842.0 860.0 to 872.0 606.0 to 636.
Zaxcom TRX-742 Manual Support Specifications Transmitter Power output: 25 / 50 / 125 mW – Software Selectable (10 mW special order) RF Modulation: Proprietary Digital Method RF Frequency Range: 518.0 to 872 MHz (typical blocks are 35 MHz wide) RF Frequency Step: 100 KHz RF Bandwidth: 200 KHz Channel Separation: 500 KHz (700 KHz recommended) Antenna Connector: 50 Ω SMA Female Emission Designator: 180 KV2E FCC Part: 75.861 Transmitter Audio A-D Dynamic Range: 127dB Analog distortion .
Zaxcom TRX-742 Manual Support Product Support Register your product with Zaxcom: http://www.zaxcom.com/product-registration http://www.zaxcom.com/software-updates Download the latest Firmware from: Download the latest User Manuals from: http://www.zaxcom.com/instruction-manuals Submit Technical Questions at: http://www.zaxcom.com/submit-a-technical-question Submit information for Repair Services at:http://www.zaxcom.com/repairs Join the Zaxcom Forum at: http://www.zaxcom.com/forum .
Zaxcom Warranty Policy and Limitations Zaxcom Inc. values your business and always attempts to provide you with the very best service. No limited warranty is provided by Zaxcom unless your TRX-742 (“Product”) was purchased from an authorized distributer or authorized reseller. Distributers may sell Product to resellers who then sell Product to end users. Please see below for warranty information or obtaining service. No warranty service is provided unless the Product is returned to Zaxcom Inc.
