Lectrosonics DPR-A Digital Plug On Transmitter
This unique plug-on transmitterdesign will ideally match any microphone or line level source via a standardXLR connector. The DPR-A can tune in 100 kHz or 25 kHz steps across the UHFtelevision band from 470.100 to 607.950 MHz, with a selectable output power of25 or 50 mW. The purely digital architecture utilizes AES 256-CTR encryptionfor high level security applications. The external antenna provides exceptionaloperating range.
The transmitter is speciallydesigned with high efficiency digital circuitry for extended operating time ontwo AA batteries, with status indicated by a multi-color LED. An IR (infrared)port is included to simplify setup with IR enabled receivers. Updates can bemade via SD card.
The input amplifier uses an ultralow noise op-amp for quiet operation. It is gain controlled with a wide range,dual envelope limiter, providing over 30 dB of headroom above full modulation.A 24-bit A-D converter digitizes the audio, then filters out supersonic noiseabove 21 kHz.
Key Features
- Wideband UHF tuning range – 470-608 MHz
- Accepts microphone or line level signals
- Selectable 5, 15, 48 volt phantom power
- Selectable 25/50 mW RF output power
- Adjustable low frequency roll-off
- Powered by two AA batteries
- IR (infrared) port for fast setup
- Remote controlled “dweedle” tones (audio toneset-up control)
- Removeable SMA-mount antenna
- Solid machined aluminum housing
- On board recording with time code jam sync
- Encryption 256 Bit AES, CTR Mode
Technical Specifications
Operating Frequencies
DPR-A 470.100 – 607.950 MHz
Frequency Selection Steps
25 kHz
RF Power output
Selectable 25/50 mW
Frequency stability
± 0.002%
Digital modulation
8PSK
Spurious radiation
US Compliant with ETSI EN 300422-1 v1.4.2
Equivalent input noise
-125 dBV (A-weighted)
Input level
Nominal 2 mV to 300 mV, beforelimiting
Greater than 1V maximum, withlimiting
Input impedance
1K Ohm
Input limiter
Dual envelope type; 30 dB range
Gain control range
55 dB in 1 dB steps; digitalcontrol
Modulation indicators
Dual bi-color LEDs indicatemodulation of -20, -10, 0, +10 dB referenced to full modulation
LCD bar graph
Encryption
AES 256-CTR (per FIPS 197 and FIPS140-2)
Frequency Response
25 Hz to 20 kHz, (+0, -3dB)
Low frequency Roll-off
Adjustable for -3dB @ 25, 35, 50,70, 100, 120 and 150 Hz
Input Dynamic Range
110 dB (A), before limiting
125 dB (with full Tx limiting)
Controls & Indicators
LCD w/membrane switches
LED audio level indicators
Audio Input Jack
Standard 3-pin XLR (female)
Phantom Power
5V @ 18 mA max., 15V @ 15 mA max. and48 V @ 4 mA max., plus “OFF”
IR (infrared) port
For quick setup by transferringsettings from an IR enabled receiver
Antenna
External SMA antenna jack
Battery
Two 1.5 Volt AA (lithiumrecommended)
Battery Life
AA Lithium, 48v phantom powerengaged:
SCHOEPS CMIT 5U 7h 25m
SCHOEPS CMC6-U/MK41 7h 20m
SANKEN CS-1 8h 0m
Weight
7.8 ozs. (221 grams)
Dimensions
4.21” L x 1.62” W x 1.38” H (106.9 L x 41.1W x 35.0 H mm)
Emission Designator
170KG1E
Recorder
Storage media
microSDHC memory card (HC Type)
File format
.wav files (BWF)
A/D converter
24-bit
Sampling rate
48 kHz
Recording modes/Bit rate
HD mono 24 bit – 144 kb/s
Input
Type Analog mic/line levelcompatible; servo bias preamp for 2V and 4V lavaliere microphones
Input level
Dynamic mic 0.5 mV to 50 mV
Electret mic Nominal 2 mV to 300mV
Line level 17 mV to 1.7 V
Timecode
Connector 3.5 mm TRS
Signal voltage 0.5 Vp-p to 5 Vp-p
Input impedance 10 k Ohms
Accuracy <1 PPM with TCXO
Format SMPTE 12M – 1999 compliant
Frequency response
25 Hz to 20 kHz; +0.5/-1.5 dB
Dynamic range
110 dB (A), before limiting
125 dB (with full Tx limiting)
Distortion
<0.035%
Operating temperature range
Celsius -20 to 50
Fahrenheit -5 to 122
Included Accessories
PHTRAN3-A pouch with belt clip
AA Lithium batteries
AMM-19 antenna
AMM-22 antenna
