The sounder plays the sound recorded with the sounder by the supplied Windows application on an SD or MMC memory card. A card reader for USB is always included in the first delivery of the detector. As standard we supply 512 MB memory cards that allow up to 3 hours of audio (or 6 hours in reduced quality) to be recorded to voice memory; if longer recording is required, we can supply 1 GB or 2 GB cards that allow double or double recording. four times the length of the record.
All detector settings are stored with the sounds on the memory card, so you can change the detector settings by simply removing the card, inserting it into the computer reader, resetting the parameters using the computer and returning the card to the detector.
The annunciator allows recording up to 32 messages in total (64/128 messages on request). The message is triggered by applying the address (message number) and the trigger signal to the appropriate pins of the system connector of the annunciator. A single 5 V supply voltage is also applied to this connector. Termination of the message is automatic at the end of the recording or by a signal from the master system – in this case the message can be terminated by a gradual mute.
- Detailed instructions for the detector can be downloaded here (for the standard version).
On request, the HLM-390 can be supplied with max. seven messages by individual inputs (instead of entering the message number (address) in binary).
If more different messages are required, the annunciator can be expanded to 128 messages and the triggering of messages can be controlled via serial port, I2C or other communication interface.
The detector has a line NF output for connecting an amplifier. Optionally, the detector can be supplemented with an internal NF amplifier for direct connection of loudspeakers; loudspeakers and amplifiers are of course also supplied.
The detector’s internal software can be upgraded if necessary by simply inserting an SD card with the new firmware.
As a special modification, we can add the function of reading numerical data from an analogue or digital input (e.g. reading of measuring instruments, machine status reports or traffic information); one implementation is, for example, a voice output for Metex multimeters, a talking thermometer or the announcement of the time until the end of an automatic production line.
Reporting parameters and quality
- Messages can be recorded with a sampling rate of 22,050 or 37 kHz, 12-bit resolution.
- Setting of message termination – immediate, slow or fast muting, prohibition of message stopping.
