Rear Panel Overview; Input Connectors And Links; Output Connectors - Lab.gruppen PLM Series Operation Manual

6.2 Rear Panel Overview

5
SPEAKER OUTPUTS
CH
CH 2
Ser. N:o
Removed!
SPEAKER OUTPUTS
1+/- CH 1+/- 1+/- CH 1+/- 3+/- CH 3+/-
CLASS 2 WIRING
2+/- CH 2+/- 2+/- CH 2+/- 4+/- CH 4+/-

6.2.1 Input connectors and Links

Ser. N:o
Removed!
see section 10 for full details of
connector pinouts, etc.
Analog inputs
Analog inputs are available on two standard XLR3F
latching connectors. The inputs are electronically
balanced and feature Dolby's patented Iso-Float
circuitry. The impedance is 20 kOhms, and the inputs
can accept a maximum input level of +26 dBu.
Analog links
Two latching XLR3M connectors are fitted adjacent
to the analog input connectors. These are paralleled
to the input connectors to provide an unprocessed
analog loopthrough to feed additional PLM Series
units, or other equipment.
AEs/EbU inputs
A latching XLR3F connector is provided which accepts
an AES/EBU digital audio signal. Input impedance is
110 ohms.
The AES/EBU digital audio format is two-
channel, and thus both PLM inputs are fed
via a single connector. Selection of the
analog or digital inputs is made via the front
panel display or control software.
1 2 1
INPUT LINK INPUT 2
CH 3
CH 4
PIN 1: SCRN 2: POS 3: NEG
I F
ANALOG WITH SO- LOAT TM
CLASS 2 WIRING
INPUT LINK INPUT 2
6
I F
ANALOG WITH SO- LOAT TM
1+/- CH 3+/-
2+/- CH 4+/-
6 QUICK GUIDE OVERVIEW
2 3 4 7
LINK 2 INPUT 1-2 LINK 1-2 ACT PRIM LINK
AES/EBU SWITCHED 10/100 Base-TX
LINK 2 INPUT 1-2 LINK 1-2 ACT PRIM LINK
Figure 6.2: PLM rear panel layout
PIN 1: SCRN 2: POS 3: NEG
AES/EBU SWITCHED 10/100 Base-TX
In comparison to analog signals, digital audio
signals such as AES/EBU require quite
different cabling and routing techniques. In
particular, standard XLR "mic cables" - even
high-quality ones - are rarely suitable for digital audio.
Always use 110 ohm digital audio cables. See sections
10.2.2 and 12.5 for further information before making
any connections to the AES/EBU inputs.
AEs/EbU link
A latching XLR3M connector is fitted adjacent to
the AES/EBU input connector. This is paralleled
to the input connector to provide an unprocessed
AES/EBU loop-thru to feed further PLMs, or other
equipment. An AES/EBU 110 ohm termination load
is enabled by default when the PLM is the last unit
connected within an AES/EBU daisy-chained system.
The termination may be disabled, if desired, via the
front panel menu and within the DLC PLM Edition
software.
6.2.2

Output connectors

The PLM is available with a choice of connectors for
power outputs: binding posts or Neutrik Speakon.
Bridge mode operation: The PLM is capable
of bridge-mode operation, however the
present system management software
does not support this mode and therefore
bridged operation is NOT recommended.
PLM Series Operation Manual 15
8
9
ACT SEC LINK
PLM 0000Q 1
200-240V 2500W
50-60Hz
Must be grounded/earthed
Made in Sweden
ACT SEC LINK
PLM 0000Q 1
200/240V 2500W
50-60Hz
Must be grounded/earthed
Made in Sweden