DMM 4650
 DMM 4650 - Call for pricing - Recorded Message Manager
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The DMM 4650 is a digital audio storage system, capable of audio recording and playback, as well as, audio signal generation such as alarms. The main application is as an additional audio recording device for the ProAnnounce system, but stand-alone applications are possible as well. The audio signals can consist of alarm, gong, messages and also random combinations. These programs were created by Dynacord and stored as presets.
The audio quality of the messages can be selected depending on memory extension and different user requirements. With maximum memory extension, a total recording time of 16 minutes is possible. Password protection is provided. The operation is easy, like cassette recorders or CD players. A computer interface allows saving and loading of unit configurations and message data. In order to ensure function reliability, a self-test and an audio data verification is installed. The alarm is provided via a dedicated output. The DMM 4650 does not require maintenance due to its use of flash memory.
Features
- Self-monitoring with fault message output
- Password protection over several levels
- RS-232 interface for data backup and servicing purposes
- Integrated service and maintenance program software
- Expandable flash-memory
- Direct digital recording and reproduction of at least 100 different sound and speech signals
- Maximum recording time up to 16 minutes
- Maximum bandwidth is 16 kHz
- 15 acoustical alarm signals and 6 different gong signals
| Specifications |
| Operating Voltage | 21.6–31.2 V DC | Frequency Response (+0/-6 dB) | 300 Hz–3.8 kHz |
| Power Consumption Max. | 18 watts | Signal to Noise Ratio (A-weighted) | > 60 dB |
| Input Voltage | 0.775 V / 0 dBu | THD @ 1 kHz | < 0.03% |
| Max. Input Voltage | 3.8 V / +14 dBu (Mic 50 mV / -24 dBu) | Data Format AD/DA converter | 16 bit linear |
| Input Impedance | 20 kΩ (Mic 1.4 kΩ) | DSP Internal | 24 bit |
| Output Voltage | 0.775 V / 0 dBu | Sampling Rate | 35 kHz |
| Max. Output Voltage | 3.8 V / +14 dBu (Phones 9 V / +21 dBu) | Control Inputs | < ± 5V=Low, > ± 10V=High |
| Output Impedance (bal./unbal.) | 136 Ω / 68 Ω | |
| Dimensions (HxWxD) | 4.4 x 48.3 x 22.5 cm
(1.75" x 19.0" x 8.86") | Weight | 4 kg (8.82 lbs) |
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DMM 4650 Specifications (pdf)