INSTALLATION |
63
PDM
PDM Operator's Manual Version 2.4a • September 2019
Rear Panel
Serial Control
Digital Audio I/O
Ethernet / Livewire
Power Input
Analog I/O
GPIO (parallel) Control
Power Input
Standard IEC configuration self-adapts to any voltage between 100 – 240 volts AC, 50 or 60 Hz.
Ethernet / Livewire
Connect to a standard 10/100Base-T network connection. All PDM models use this port for
remote control via web browser, PD-Alerts, serial remote control over IP, and synchroniza-
tion to a network time server. If connected to the Internet, it should be behind a hardware
firewall or on a VPN.
In additional, Axia-Livewire equipped models use this port for Livewire audio input and
output. Livewire operation requires special software; Contact 25-Seven or your dealer for
upgrade details.
Digital Input
When set to AES/EBU via the
Audio
menu, this input conforms to IEC 958 Professional
(5v p-p, 110
Ω
balanced) on XLR connectors.
When set to s/pdif, the voltage and impedance switches to IEC 958 Consumer (.5v p-p, 75
Ω
unbalanced): connect signal to pin 2 and shield to pins 1 and 3.
The digital input jack on XLR-equipped PDMs is active at all times, even if you’ve selected
analog
for the audio input. This provides the most flexible operation. But it can have
unexpected effects if you connect the wrong kind of signal:
n
Whenever there’s a valid digital input signal at 44.1 kHz or 48 kHz, PDM locks its
internal sample clock to it. This assures high quality and full compatibility with other
other equipment in the facility, so you can use PDM as an analog-to-digital bridge. But
it also means PDM internal processing can be affected if the digital input isn’t stable,
and this affects both PDM’s analog and digital outputs!
n
Do not connect, remove, or change the signal on PDM’s
digital
input jack while
it’s on the air! This applies even if PDM is processing an analog input at the time,
and if you’re using only PDM’s analog outputs.
Содержание PDM
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