Lectrosonics duet DCHT Instruction Manual Download Page 11

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Digital Transmitter

Rio Rancho, NM

TYPE

DESC, BIAS, IMPEDANCE, POLARITY

Line In

Line level signals up to +24 dBu

Dynamic

Low-Z dynamic microphones

PSA

Point Source Audio lav microphones

DPA

DPA lavaliere; 4V, Mid-Z, (+)

Countryman B6; 2V, Low-Z, (+)

COS-11

Sanken COS-11; 4V, Low-Z, (–)

MKE 2*

Sennheiser MKE 2; 4V, Low-Z, (+)

M152*

Lectrosonics M152; 4V, Low-Z, (+)

Oth Lav*

Other lavaliere; 4V, Low-Z, (+)

Custom

Manually configurable microphone level

* Separate listings for these microphones are included for

convenience, however, they are all the same configura-

tion.
The

Custom

option opens a setup screen that provides a

variety of settings. Press SEL to select the custom setup

item, then press the and arrow buttons to adjust

the setting.

InpCfg2

Custom

MicLoZ

0V Neg

Channel select

Input impedance

Bias voltage

Audio polarity

Available settings:

•  Input impedance (Z): LOW, MID, HIGH
•  Bias voltage: 0V, 2V, 4V
•  Audio polarity: + (pos.), – (neg.)

Xmit Menu

Selecting Frequency

The setup screen for frequency selection offers multiple

ways to browse the available frequencies.

Xmit...

Freq

TxPower
Rf On?

Freq.

494

.500

Grp 4

Freq.

494.

500

Grp 4

Press the MENU/SEL button to select each field. Use the

and arrow buttons to adjust the frequency. Each field

will step through the available frequencies in a different

increment, or select the Frequency Group.

NOTE: When the frequency is highlighted, hold

down the MENU/SEL button to increase or

decrease frequency in higher increments.

Selecting Transmitter Output Power

The output power can be set to 10 mW, 25 mW

or 50 mW.

Xmit...

TxPower

Compat

Rf On?

TxPower

10 mW
25 mW
50 mW

Turning Rf On/Off

Turn Rf off to preserve battery power while setting other

transmitter functions. Turn it back on to begin transmit-

ting.

Xmit...

TxPower

Compat

Rf On?

Yes
No

NOTE: When transmitter is off, a brief press of

the Power Button will turn the transmitter on

with Rf off. Use this function to turn Rf on when

ready to transmit.

Compatibility Mode

Selecting Receiver Compatibility Mode

The transmitter can be set to operate with different re-

ceivers:

Duet:

M2R digital IEM/IFB receiver

DCHX:

DCHR and

M2R-X encrypted (FW v3.x)

TopMenu

Input

Xmit

Compat

Duet
DCHX

Summary of Contents for duet DCHT

Page 1: ...just input gain for optimum modulation level see page 10 4 Set or sync frequency to match receiver see page 11 12 Also see receiver manual for scanning pro cedure 5 Set encryption key type and sync with receiver see page 13 6 Set programmable switch to desired function see page 13 7 Verify RF and audio signals are present at the re ceiver see receiver manual WARNING Moisture including talent s swe...

Page 2: ...put Type 10 Selecting Input Configuration 10 Xmit Menu 11 Selecting Frequency 11 Selecting Transmitter Output Power 11 Selecting Receiver Compatibility Mode 11 Turning Rf On Off 11 Selecting M2R Receiver Functions 12 GetFrq 12 SendFrq 12 GetAll 12 SendAll 12 Name 12 Flex 12 Key Menu 13 Encryption Key Management 13 KeyType 13 MakeKey 13 WipeKey 13 SendKey 13 Setup Menu 13 Selecting AutoOn Feature 1...

Page 3: ...da ISED Notice This device operates on a no protection no interference basis Should the user seek to obtain protection from other radio services operating in the same TV bands a radio licence is required For further details consult Innovation Science and Economic Development Canada s document Client Procedures Circular CPC 2 1 28 Voluntary Licensing of Licence Exempt_Low Power Radio Apparatus in t...

Page 4: ...e cut and fully assembled Each an tenna covers three blocks Refer to the chart below to determine which antenna matches the operating frequency you will be using Frequency Cap Block Range MHz Color Antenna 470 470 100 495 600 Black AMM19 19 486 400 511 900 Black AMM19 20 512 000 537 500 Black AMM19 21 537 600 563 100 Red AMM22 22 563 200 588 700 Red AMM22 23 588 800 607 950 Red AMM22 USB Port Opti...

Page 5: ...nged belt clip model num ber BCSLEBN is also available This clip is attached by removing the plastic hole cap on the back of the housing and mounting the clip with the supplied screw IR infrared Port The IR port is available on the top of the transmitter for quick setup using a receiver with this function available IR Sync will transfer the settings for frequency from the receiver to the transmitt...

Page 6: ...al Amplifier Control PLL Ref Phase Locked Loop DSP Clock Switching Power Supply Microprocessor Power LED Tricolor D A Converter I Q Baseband Signals Low pass filters IQ Modulator UART USB Jack Firmware Update Status Ready Low Pass Filter Buffer 36 864 MHz IR Port I2S A D Converter Shunt Limiter Limiter Control Gain Adj HI Lo Pass Filter Input Preamp Bias Voltage 0 2 or 3 6V Servo Bias Supply Audio...

Page 7: ...it will remain turned on and the LCD will return to the same screen or menu that was displayed previously NOTE If the programmable switch is in the OFF position power can still be turned on with the power button Main Menu and Setup Screen Details Entering the Main Menu The LCD and keypad interface makes it easy to browse the menus and make the selections for the setup you need When the unit is pow...

Page 8: ...n to begin sync SEL BACK SendFrq SendFreq Sync Press UP arrow button to begin sync SEL BACK TxPower Select option with arrow buttons 10 mW 25 mW 50 mW Compat SEL BACK Compat Duet DCHX Select option with arrow buttons SEL BACK Rf On Yes No Select option with arrow buttons Use arrow buttons to select value 22 Gain Level meter at bottom of screen 20 2 1 SEL button to select channel gain value highlig...

Page 9: ...Press UP arrow button to begin sync WipeKey SEL BACK WipeKey No Yes Select option with arrow buttons No Yes Enable Ignore Yes No SEL BACK NameTx NameTx Press MENU SEL to confirm and move cursor to next position 8 characters available Select character with arrow buttons SEL BACK Flex Flex SendTx SendCh1 SendCh2 SEL BACK SendTx Sync Select option with arrow buttons SendTx SendCh1 SendCh2 SendM12 Nam...

Page 10: ...tment set according to these instruc tions and do not change it to adjust the audio output level of the receiver 7 If the audio source drives the inputs into limiting the audio level meter will move all the way to the right and terminate in a small box with an L in it indicating limiting If this happens on anything other than brief peaks then the audio gain is set too high Selecting the Low Freque...

Page 11: ...rs multiple ways to browse the available frequencies Xmit Freq TxPower Rf On Freq 494 500 Grp 4 Freq 494 500 Grp 4 Press the MENU SEL button to select each field Use the and arrow buttons to adjust the frequency Each field will step through the available frequencies in a different increment or select the Frequency Group NOTE When the frequency is highlighted hold down the MENU SEL button to increa...

Page 12: ...ple transmitters and re ceivers but not as secure as creating a unique key NOTE When the DCHT is set to Universal Encryption Key Make Key Wipe Key and Share Key will not appear in the menu Shared There are an unlimited number of shared keys available Once generated by the DCHT and transferred to an encryption capable receiver the encryption key is available to be shared synced by the receiver with...

Page 13: ...o begin sync SendTx Sync SendCh1 Sync Setup Menu Selecting AutoOn Feature If external power is switched off or batteries fail while the unit is transmitting the unit will automatically turn back on after power is restored or fresh batteries are installed This function is enabled by selecting Yes in the menu options Setup AutoOn ProgSw Remote AutoOn No Yes NOTE AutoOn does not work when the transmi...

Page 14: ... can be locked to prevent inad vertent changes being made Locked Yes No 40 20 0 Gain 25 A small padlock symbol will appear on adjustment screens when changes have been locked Setup NameTx Locked Backlit When changes are locked several controls and actions can still be used Settings can still be unlocked Menus can still be browsed Programmable switch still works Mute and On Off Sync functions are s...

Page 15: ...ant ETSI EN 300 422 1 v1 4 2 DCHT E01 Compliant ETSI EN 300 422 1 v2 1 2 Digital Modulation 8PSK Encryption AES 256 CTR per FIPS 197 and FIPS 140 2 Equivalent Input Noise 128 dBV Input Types Analog mic and line level AES digital Input Level analog Mic Nominal 2 mV to 300 mV before limiting Greater than 1V maximum with limiting Line 24 dBu before limiting Input Impedance Mic 300 or 4 5 k ohm select...

Page 16: ...osonics P N 21932 NOTICE Any microphone wired using pin 2 for elec tret bias will NOT work with the DCHT DCHT E01 and MCTA6TA5M2 adapter For example see figures 1 and 2 below for servobias inputs that will not operate properly 1 2 3 4 5 PIN SHIELD AUDIO 1 2 3 4 5 TA5F PLUG 2 7 k 2 VOLT NEGATIVE BIAS 2 WIRE ELECTRET Compatible wiring for microphones such as negative bias TRAM models NOTE The resist...

Page 17: ...amp can be crimped to contact both the mic cable shield and the insulation The shield contact reduces noise with some microphones and the insulation clamp increases ruggedness Shield Insulation Crimp these fingers to contact the shield Crimp these fingers to clamp the insulation Mic Cable Stripping Instructions 0 15 0 3 1 2 3 4 5 6 VIEWED FROM OUTSIDE TA6F Connector Assembly ...

Page 18: ...pple App Store DCHTRemote s remote control mechanism is the use of an audio sequence of tones dweedles that are inter preted by the transmitter as a configuration change The settings available in DCHTRemote are Audio Level Gain Frequency Sleep Mode Lock Mode Output Power Low Frequency Roll off LED on off Activation For the DCHT to respond to remote control audio tones the transmitter must The tran...

Page 19: ...strie Canada concernant les limites d exposition aux radiations pour un environnement incontrôlé This radio transmitter IC 8024A DCHT DCHT E01 has been approved by Innovation Science and Economic Development Canada to operate with the antenna types listed below with the maximum permissible gain indicated Antenna types not included in this list that have a gain greater than the maximum gain indicat...

Page 20: ...o microphone level signals 18 inch length MCTA6TA3F2 Line level signals from two TA3 M out puts 18 inch length MCTA6TA5M2 Microphone and line level signals from microphones and other devices configured with TA5F connectors for Lectrosonics wireless transmitters 6 inch length MCTA6XLRF2 Line level signals from two XLR M out puts 18 inch length DCHTCVR This tough silicone cover protects the DCHT fro...

Page 21: ...de No Sound Or Low Sound Level Receiver 1 Receiver output level set too low Indicates Proper Audio Modulation 2 Receiver output is disconnected cable is defective or miswired 3 Camera Recorder Mixer input is turned down Distorted Sound 1 Transmitter gain audio level is too high Check Modulation LEDs on transmitter and receiver while distortion is being heard 2 Receiver output level may be mismatch...

Page 22: ...e of the problem the model number and the serial number of the equipment We also need a phone number where you can be reached 8 A M to 4 P M U S Mountain Standard Time B After receiving your request we will issue you a return authorization number R A This number will help speed your repair through our receiving and repair departments The return authorization number must be clearly shown on the out...

Page 23: ...Digital Transmitter Rio Rancho NM 23 ...

Page 24: ...trosonics Inc will pay for the cost of returning your equipment to you This warranty applies only to items returned to Lectrosonics Inc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liablility of Lectrosonics Inc and the entire remedy of the purchaser for any bre...

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