The Lectrosonics DPR-A unique plug-on transmitter has an analog input limiter with 30dB range to prevents digital clipping
The DPR-A's design will ideally match any microphone or line level source via a standard XLR connector. The DPR-A can tune in 100 kHz or 25 kHz steps across the UHF television band, with a selectable output power of 10, 25 or 50 mW. The purely digital architecture utilizes AES 256-CTR encryption for high level security applications. The external antenna provides exceptional operating range.
The transmitter is specially designed with high efficiency digital circuitry for extended operating time on two 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 be made via SD card.
The input amplifier uses an ultra low 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 noise above 21 kHz.
Features
- Wideband UHF tuning range – Available in A1B1 and B1C1 bands
- Accepts microphone or line level signals
- Selectable 5, 15, 48 volt phantom power
- Selectable 10/25/50 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 tone set-up control)
- Removeable SMA-mount antenna (required for operation)
- Solid machined aluminum housing
- On board recording with time code jam sync
- Encryption 256 Bit AES, CTR Mode with 4 key policies
Included Accessories
- PHTRAN3-A pouch with belt clip
- AA Lithium batteries
- AMM-19 antenna
- AMM-22 antenna
Specifications
Transmitter
| Operating Frequencies |
DPR-A/E01: 470.100 - 614.375 MHz
DPR-A/E01-B1C1: 537.600 - 691.175 MHz
|
| Frequency Selection Steps |
25 kHz |
| RF Power Output |
Selectable 10/25/50 mW
|
| Frequency Stability |
± 0.002% |
| Digital Modulation |
8PSK |
| Spurious Radiation |
US: Compliant with ETSI EN 300 422-1 v1.4.2 |
| Equivalent Input Noise |
–125 dBV (A-weighted) |
| Input Level |
Nominal 2 mV to 300 mV, before limiting
Greater than 1V maximum, with limiting |
| Input Impedance |
1K Ohm |
| Input Limiter |
Dual envelope type; 30 dB range |
| Gain Control Range |
55 dB in 1 dB steps; digital control |
| Modulation Indicators |
- Dual bi-color LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation
- LCD bar graph
|
| Encryption |
AES 256-CTR (per FIPS 197 and FIPS 140-2) |
| Frequency Response |
25 Hz to 20 kHz, (+0, -3dB) |
| Low Frequency Roll-Off |
Adjustable for -3 dB @ 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.
48V @ 4 mA max.
Plus “OFF” |
| IR (Infrared) Port |
For quick setup by transferring settings from an IR-enabled receiver |
| Antenna |
External SMA antenna jack |
| Battery |
Two 1.5 Volt AA (lithium recommended) |
| Battery Life |
Energizer Ultimate Lithium Batteries / AA Lithium, 48V phantom power engaged:
- With Schoeps CMIT 5 U microphone: 6 hr 20 min
- With Sanken CS-1 microphone: 6 hr 45 min
- With Sennheiser MKH 416 P48: 6 hr 40 min
Duracell Ultra Batteries / AA Alkaline, 48V phantom power engaged:
- With Schoeps CMIT 5 U microphone: 2 hr 20 min
- With Sanken CS-1 microphone: 2 hr 20 min
- With Sennheiser MKH 416 P48: 2 hr 20 min
|
| Weight |
7.8 oz (221 grams) |
| Dimensions |
4.21” L (excluding antenna: DPR-A) x 1.62” W x 1.38” H (106.9 L x 41.1 W 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 level compatible; 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 300 mV
- 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 |
| Audio Performance |
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 |
