MiniTX - Audio Services Corporation (Canada) Ltd.
Contents
1. 6 te User Guide miniTX transmitter e Align the front of the SwitchiR with the infra red port on the transmitter and press OK The display shows The red overload LED will flash on momentarily to indicate that the miniTX has woken from sleep mode e Press MENU The display shows e Align the front of the SwitchyR with the infra red port on the transmitter and press OK The display shows the current frequency for example FREQUENCY K SEN Hx MHz Alternatively you can use the Control X to turn the miniTX on again FREQUENCY ra m i LT Frequency range Number of frequencies Technical specification 470MHz 1000MHz 32 pre programmed Frequency stability Switching range Output power RF output connector Audio input connector System frequency response System THD measured at 1kHz Gain control range Maximum input level Indicators Batteries Battery life Other Size Weight Operating temperature Compliant to Better than ETS 300 422 Up to 24MHz 25mW nominal SMA 500 4 pin Lemo Other variant available 3 pin Lemo 50Hz to 18kHz 1dB lt 0 1 at working levels lt 0 3 at gain position 9 with 6dB input in overload 30dB in 8 steps OdBu gain position 2 Red LED to indicate overload Flashing orange LED to indicate sleep mode Static orange LED for low battery 2 X AAA LRO3 1 5V type alkaline Typically 5 hours with alkaline type batteries miniTX ca2. FREQUENCY Tx Hz To change the frequency e Press OK The display will alternately flash between showing the frequency and channel number For example CHANNEL nv 81 e Press A or V to scroll through the 32 frequencies read from the transmitter until the desired frequency or channel is displayed For example CHANNEL e Point the SwitchiR at the infra red port on the miniTX and press OK If the command was received successfully the display will show the new set frequency For example FREQUENCY ra aD qe ram a e Repeat the above steps if an error message is displayed moving the SwitchiR closer to the infra red port Setting the gain The steps between gain settings 2 9 are approximately 3 to 4dB Set the gain position so that the Overload indicator does not flash on during normal operation Note On the miniTX gain settings O 1 and 2 are the same To check the gain setting e Press MENU followed by A The display will indicate AF LEVEL e Align the front of the SwitchiR with the infra red port of the miniTX and press OK The display will show the current transmitter gain setting AF LEVEL E a Lut Hx To change the gain setting e Press OK again The display will flash the level setting e Press A Or V to step between gain settings 2 9 until the required gain setting is displayed For example AF LEVEL e l Tx e Align the front of the SwitchiR with the infra red port
3. on the transmitter and press OK If the command was received correctly the display will show the new gain setting For example AF LEVEL e l Tx Otherwise the display shows e Repeat the previous steps if an error message is displayed moving the SwitchiR closer to the infra red port User Guide miniTX transmitter Setting the LF cut filter The LF cut filter gives an approximately 12dB cut at 50Hz to reduce handling and wind noise To check the status of the LF cut filter e Press MENU e Press a twice until the display shows e Align the front of the SwitchiR with the infra red port on the transmitter and press OK The current LF cut filter setting is displayed for example To change the filter setting e Press OK again The current setting will flash e Press N or V to toggle between ON or OFF until the required setting is displayed e Align the front of the SwitchiR with the infra red port on the transmitter and press OK If the command was received successfully the new setting will be displayed For example e Repeat the previous steps if an error message is displayed moving the SwitchiR closer to the infra red port Checking the battery status e Press MENU e Press A three times until the display shows a TxRx rem m e Align the front of the SwitchiR with the infra red port on the transmitter and press OK The display will show the current battery status The battery level c
4. User Guide miniTX transmitter The miniTX transmitter is the smallest transmitter in the Audio Ltd range Designed as a rounded form to be very easily concealed All settings can be set and changed via the infra red port using the SwitchiR and the miniTX can also be turned on and off through clothing using the Control X There are two versions of the transmitter available one with a 4 pin Lemo connector and the other with a 3 pin Lemo connector Controls display and connections Audio Infra red input socket port Top panel On Overload Sleep Low battery red orange Infra red port Receives commands from and transmits status information back to the SwitchiR infra red controller or AudiR for Palm On Overload indicator red Flashes on momentarily to indicate an overload in the presence of a high level audio signal At this point the low distortion limiter operates Sleep Low battery indicator orange Flashes every two seconds when the transmitter is in sleep mode Remains on when the battery is low Battery compartment Holds two AAA type 1 5V alkaline batteries Audio input Allows a microphone or input cable to be connected via a 4 pin Lemo connector or 3 pin Lemo connector on an optional variant SMA antenna connector SMA socket to which the antenna is connected LF cut using SwitchiR Gives approximately 12dB LF cut at SOHz to assist in the reduction of wind noise Gain setting using t
5. an also be checked from the receiver see the appropriate instructions for the receiver Infra red disable You can protect the miniTX from an accidental change of settings such as in a live performance by disabling the infra red port on the transmitter This will prevent all communication with the transmitter until the the battery is disconnected and reconnected via the microphone plug Disabling the infra red port e Press MENU e Press A twice The display will show dISABLE X Align the front of the SwitchiR with the infra red port on the transmitter and press OK If the command was received successfully the display will show Note Once the infra red port has been disabled any subsequent interrogation of the transmitter will give an error display this is not a fault Sleep mode The miniTX can be put into sleep mode using the SwitchiIR In sleep mode the orange LED will flash every two seconds The miniTX uses very little current and the SwitchiR can still be used to read all settings other than frequency When not in use the power should be switched off by removing the microphone plug or input cable Putting the miniTX into sleep mode e Press MENU followed by V The display will indicate 4 Ux e Align the front of the SwitchiR with the infra red port on the transmitter and press OK The display will show To switch the transmitter on again e Press MENU The display shows FREQUENCY Eo gt
6. he SwitchiR Provides eight gain options when used with standard Antenna microphones Position 9 gives maximum gain and each position decreases the gain by approximately 3 to 4dB giving a total of 30dB of adjustment Setting up the miniTX To set up the miniTX e Fit the batteries e Connect the antenna e Switch on by plugging in the microphone or input cable 4 pin Lemo version only e Check or select the operating frequency e Check that the receiver s no signal indicator is not illuminated e Check or set the microphone gain e Check or set the LF cut filter e Check the battery status These steps are explained below Fitting the batteries Open the battery compartment by turning the battery cover retaining nut in an anti clockwise direction Rotate the battery cover in either direction Insert two AAA LRO3 type batteries as shown in the diagram on the miniTX sleeve Close the battery cover and tighten the battery cover retaining nut in a clockwise direction Take care not to over tighten The miniTX has reverse battery protection i Low battery indication When the battery is low the orange LED will remain on The miniTX should not be used when the battery is low as poor operation may result A low transmitter battery indicator Is also provided on the DX2040 receiver and on the RK2040 rack Note On the miniTX fitted with the 3 pin Lemo connector the transmitter will switch on as soon a
7. n be switched ON OFF through clothing via Control X available separately 16 5 x 82 x 48mm DxHxW 90g Inc batteries 20 C to 55 C ROE FCG EN 300 427 EN 300 445 C 0891 For further information contact Audio Ltd or your local distributor www audioltd com User Guide miniTX transmitter CE 0891 EC Declaration of Conformity D claration de conformit pour la CEE EG Konformitats Erklarung Certificato di conformit comunitario Declaraci n de Conformidad EG Conformiteitsverklaring AUDIO LIMITED Audio House Progress Road High Wycombe HP12 4JD U K declare that these devices d clarons que ces appareils erkldren dass die Produkte declaramos que estos aparatos dichiaria che questi apparecchi verklaren dat deze toestelen miniTX Pocket Transmitter conform to the essential requirements of the R amp TTE Directive 1999 5 EC To demonstrate compliance with these requirements the following standards were consulted sont conformes aux prescriptions fondamentales dan la Directive R amp TTE 1999 5 EC Pour mettre en pratique dans la r gle de l art les prescriptions il a t tenu compte des normes suivantes den einschl gigen Anforderungen der R amp ITE Direktive 1999 5 EC entsprechen Zur sachgemafsen Umsetzung der in den EG Richtlinien genannten Anforderungen wurden folgende Norman herangezogen complen los requimientos b sicos de la normativa de la normativa R amp TTE 1999 5 EC Con il fin de reali
8. s the batteries have been fitted to the transmitter To maximize battery life the miniTX should be put into sleep mode by turning the miniTX off using the SwitchiR User Guide miniTX transmitter Connecting the antenna Connect the flexible antenna to the SMA connector Switching on Insert the microphone plug only the 4 pin Lemo version turns on the miniTX The red LED illuminates momentarily under the top cover to indicate that the transmitter has been turned on Switching off To turn the transmitter off remove the Lemo plug 4 pin Lemo version only or put the miniTX in sleep mode by switching it off using the SwitchiR Alternatively the miniTX can be turned off or on even through clothing using the Control X In sleep mode the orange LED will flash every two seconds and the transmitter will draw very little current Connecting the audio input Connect the microphone or input cable to the four pin Lemo socket A positive microphone bias voltage is provided enabling the majority of modern lavalier microphones to be used with the miniTX Selecting the operating frequency You can check or change the operating frequency of the miniTX via the infra red control using the SwitchiR To check the frequency e Press MENU The display shows FREQUENCY Le to MHz e Align the front of the SwitchiR with the infra red port on the miniTX and press OK The display shows the current frequency for example
9. zar de forma adecuada los requirimientos referidos en la normativa fueron consaltadas las siguientes normativas sono conformi alla normativa R amp TTE 1999 5 EC Per un appropriato risconto nell ambito della normativa CEE sono state consultate le seguenti normative evereenkomt met de basiseisen van de EG Richtlijn 1999 5 EC Om de eisen die in de EG Richtlijnen vermeld zijn in juiste vorm om te zetten zijn van volgende normen gebruik gemaakt Article 3 1a EN 60065 2002 Safety of Electrical Equipment Article 3 1b EN 301 489 9 2002 Electromagnetic Compatibility Article 3 2 EN 300 422 2 2000 Radio Parameters Conformity assessed via Annex IV using a Technical Construction File examined by Notified Body 0891 TRL Compliance Services Ltd Arbo Lee Stone Technical Director 2007
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