Operation Manual

Signal Flow and Lake® Processing
27
PLM Series Operation Manual Rev 1.3.0
The sophisticated output section monitors faults and generates warnings when appropriate; warnings are
displayed on the front panel of the PLM and also sent as messages over the control network. In the rare
event that maximum ratings are signicantly exceeded, the PLM will shut down until the condition has
been rectied or the incorrect setting has been readjusted. Sensing circuits also transmit local output power
stage temperature, processor card temperature, and PSU temperature to the appropriate protection circuits.
Please refer to section 5.3 on page 17 further details.
Table 6-1 lists PLM Series analog input sensitivity in dBu and Vrms for various Amp Gain settings and
maximum/minimum ISVPL settings, assuming an analog input headroom of 26 dBu.
INPUT SENSITIVITY
ISVPL SETTING 194 V 193 V 153 V 17.8 V
GAIN (dB) dBu Vrms dBu Vrms dBu Vrms dBu Vrms
+44
+1.0 0.87 +0.9 0.86 -1.1 0.68 -19.8 0,08
+41
+4.0 1.22 +3.9 1.22 +1.9 0.96 -16.8 0.11
+38
+7.0 1.73 +6.9 1.72 +4.9 1.36 -13.8 0.16
+35
+10.0 2.44 +9.9 2.43 +7.9 1.92 -10.8 0.22
+32
+13.0 3.45 +12.9 3.43 +10.9 2.71 -7.8 0.32
+29
+16.0 4.87 +15.9 4.84 +13.9 3.84 -4.8 0.45
+26
+19.0 6.88 +18.9 6.84 +16.9 5.42 -1.8 0.63
+22
+23.0 10.90 +22.9 10.84 +20.9 8.59 +2.2 1.00
Table 6-1: Analog Input Sensitivity in dBu and Vrms
6.3 Lake Processing and Control
As outlined in section 2.2.3, this device integrates seamlessly into the Lake Processing environment,
providing all features, functionality and connectivity associated with all Lake Processors. The internal Lake
Processing includes programmable crossovers, EQ, dynamics and other functions, and can be fully con-
trolled via the supplied Lake Controller software. Additionally, many functions can be controlled or accessed
directly via the front panel.
The Lake Controller Operation Manual and Lake Network Conguration Guide are supplied on the accompa-
nying CD-ROM and additional documentation is available from the Start Menu after software installation.
Visit http://labgruppen.com to download the latest software, rmware and documentation for your devices.
6.4 Modules and Frames
6.4.1 Overview
A Frame represents one physical Lake Processor (e.g. PLM 10000Q). A maximum of two Modules are
contained within each Frame; these are referred to as Module A and Module B. The number of Modules
shown in a given Frame is dependent upon the signal processing conguration of that Frame.