A__mic8 / A__digital8 User Guide
Version: 10.0.0/4
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4. Controls, Connectors & Indicators
4. Controls, Connectors & Indicators
4.1
A__mic8
1
Status Display & Menu Control
From here you can view and edit basic parameters such as the IP address of each streaming port. The
POWER
LED illuminates as soon as power is applied.
2
4 x LINE OUT
Four line level outputs (XLR) for connection to local devices (balanced; floating; suitable for unbalanced use;
maximum output level +24dBu).
3
8 x MIC/LINE IN
Eight mic/line inputs (XLR) for connection to microphones and other local devices (balanced; galvanic separated;
suitable for unbalanced use; click-free gain adjustment; gain range 118dBA; +48V phantom power; -20dB PAD;
maximum input level +24dBu).
4
8 x GPI IN / 8 x GPI OUT
Eight General Purpose Inputs and Outputs (D-Sub) for local signaling and switched functions:
·
GPI: 8 x optocouplers (3-36 VDC / 8mA @ 36V).
·
GPO: 8 x silent CMOS relays (50V AD/DC / 0.5A AC; 1.0A DC).
5
12V DC Input
This is the connection to the external 12V DC power supply. The power supply is optional and must be used if
Power over Ethernet (PoE) is not available, or if power redundancy is required. The
CASE
grounding screw should
be used to ground the frame.
6 & 7
ETHERNET A & ETHERNET B
These are the two streaming ports which connect the unit to the AoIP network (RJ45, Gigabit Ethernet: 100/1000
Base-T). If only one port is connected, then the device supports non-redundant streaming. Connect both ports to
configure redundant streaming via SMPTE 2022-7 (SPS). Both ports provide access to the HTML pages.
ETHERNET A supports Power over Ethernet (PoE).
8
WCLK IN & WCLK OUT
A__mic8 features Wordclock connectivity on the rear of the device. The two standard BNC connectors provide:
·
WCLK IN
- to connect an external Wordclock reference signal to sync the device.
·
WCLK OUT
- to output the active sync source (PTP, Wordclock or Internal) of the device.
The Wordclock input signal can be used to generate a corresponding PTP reference, so that other nodes can
sync via the IP network. Please note: if you are using a mixture of PTP and WCLK references within your
installation, then it is mandatory to derive them from the same master reference (e.g. GPS). Otherwise sync
offset issues will result in audible audio artifacts.
