The Merlin is designed to provide sophisticated changeover of audio signals, such as stereo pairs and even FM multiplex and video composite signals.
Expressly designed for broadcast applications, Merlin features a hardware bypass (via relay) which connects the Input 1 pair (and the Coaxial Input 1 as well) to the Output (both XLRs and Bnc) in case of AC power failure or whenever the unit is unintentionally turned off. This prevents the transmission chain from any audio interruption.
Incoming signals are constantly monitored and if a fault is detected on the signal applied to a set Input, it will switch to a stand-by source (such as a CD), in order to keep transmissions running.
The Merlin fulfils the needs of every radio station for manual or automatic (emergency) switching between different audio sources.
Multiple switching mode are provided (switch on stand-by input only when active, switch and stay on the second input, etc). Up to 7 internal relays can be associated to the audio switching for further alarm signalling, external signal routing, starting CD players etc.
Using internal and front settings, the Merlin can be easily re-configured for a variety of applications, either in the radio or in the video field.
The delay times before switching and before returning to the normal state (recovery) are easily set by trimmers and jumpers.
The electronically balanced stereo inputs feature individual left / right gain controls with two bi-color LEDs enabling quick recognition of input status (no audio, audio ranging between - 6 and + 3 dBm or audio higher than + 3 dBm dB).
The rear panel includes a remote control / monitoring socket (optoinsulated) which may be used to connect external warning circuit. The contacts are open during normal operation and close during failure. These relays may be used to activate an external alarm in the event of a failure - even in case of missing power.
The Merlin can be equipped with plug-in, optional modules which greatly improve its application fields: MPX decoder, Video monitor, Serial monitor and Crossfade module.
Features:
- Audio changeover 2 inputs /1 output
- Double Audio Detector fully user-settable
- Designed for transmitting sites
- Fully configurable for a range of applications
- Wide remote control capabilities
- Complete control of stereo audio, FM multiplex / Video composite source failures
- Hardware Bypass in case of AC Main failure
- Internal 1kHz / 0 dB oscillator
- Automatic / manual operation
- Easy to install and operate
