Glensound Beatrice PM4 is a 4 channel desktop Dante paging mic. It is simple to use with key features hidden to prevent tampering. The PM4 connects to the network via a single network cable which provides the audio link and power via PoE. Power is supplied via PoE on the network connection using a Neutrik EtherCON locking RJ45 connector. PoE is received from the network switch or via a midspan PoE injector.
A digital frequency shifter prevents unwanted howl when the mic might pick up nearby audio from a speaker, and a selectable announcement chime is available. The small footprint allows use where desk space is at a premium whilst four solid rubber feet ensure the Pm4 is solid on the counter and will not move.
Beatrice PM4 can output audio to 4 different network locations using the top panel push buttons. These buttons are low profile with blue LED back lighting to indicate an active channel. There are scribble strips under each button for labelling.
The selectable button operation modes include:
| Latching |
Pressing a button latches it on or off |
| Momentary (Push To Talk) |
Press and hold a button to talk. When it is released the button de-latches. |
| Intelligent (momentary and latching) |
A quick press will latch the button. A press and hold will activate then unlatch when released |
| Multiple Output Announcements |
A quick press of multiple channels and hold the last selected. This will activate the channels then all channels will unlatch when the button is released. |
On the underside of the unit there is the microphone gain adjustment. This is adjusted via small, recessed screw. This can then be simply set by an engineer and reduces the chance of the operator making any unwanted changes. A level indicator LED will show when the input is at line level. There is a switch to select between dynamic and condenser mics with 48V Phantom power.
Glensound PM4 has several advanced functions that can be configured as required, including announcement chime, frequency shifter, low cut filter, GPIO.
Included accessories: 12-inch gooseneck microphone, Cat5 RJ45 plug/RJ45 plug cable, RJ45 network cable: 2 metre, handbook available by download.
Power Over Ethernet (PoE): 48V. Dante network chipset: Ulitmo. AES67 compliant: Yes. Number of network interfaces: 1. Audio sampling frequency: 48kHz. Transfer rate: 100Mbps. Resolution: 24 bit. Microphone input gain range: 48 - 68dB, dynamic; 38 - 58dB, phantom. Phantom power: 48v. Equivalent input noise: -125dBu. Frequency response: 100Hz to 20kHz, +/- 1dB; 300Hz to 20kHz. +/- 1dB. Operating temperature: 0 to +50 degrees Celsius. Dimensions (WxDxH): 101 x 122 x 62mm. Weight: 340g