Revision B • 7/00
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9
3 Operation
Meter Panel
The meter panel holds the Clock/Timer assembly, the two sets of bargraph level meters and the Cue/Talkback
speaker. The clock has no external controls. Clock time setting requires the use of the Clock Setting Magnet Tool
(supplied in the Tool Kit) when the clock is set for master mode. In slave mode, where clock timing is derived from
an ESE time code signal, the clock does not need to be set. See the section in Chapter 2,
Installation, Setting the
Clock
, for information on setting the time.
The electronic meter movements have no individual meter calibrations or alignments. The meters use IEEE
standard 152-1991 (standard audio program level measurement). When set for PPM display mode, via the
Output module DIP switch, the PPM indications will light and a +4 dBu sine wave output signal will display at
-8 on the PPM scale. When set for displaying VU, the VU indications will light and a +4 dBu sine wave output will
display at 0 on the VU scale. Each of these settings corresponds to -20 dBFS (decibels below Full Scale digital
output).
The meters display the left channel audio output on the top row and the right channel audio on the bottom row
of each meter. The right hand meter can momentarily show the Cue bus level by pressing the Cue button on the
Output module. While this button is pressed the top row of LEDs show the Cue bus output level.
The Cue/Talkback speaker’s impedance is 45 ohms with a 3-watt power-handling capacity. The speaker vol-
ume is controlled by the Cue volume control on the Monitor module. A 3-watt amplifier IC on the Monitor
module drives the speaker. Refer to Chapter 5,
Maintenance & Alignment
,
Meter Panel Assembly
for speaker replace-
ment procedures.
Program-2 / 3
Program-1
PACIFIC RESEARCH & ENGINEERING
VU
PPM
-40
-40 -20
-20
-10
-16
-12
-8
-7 -5
-4
-3 -2 -1 0
0
+8
+4
+1 +2 +3
-40 -20
-10 -7 -5
-3 -2 -1 0 +1 +2 +3
VU
Peak
VU
PPM
-40
-40 -20
-20
-10
-16
-12
-8
-7 -5
-4
-3 -2 -1 0
0
+8
+4
+1 +2 +3
-40 -20
-10 -7 -5
-3 -2 -1 0 +1 +2 +3
VU
Peak
Pgm-2
Pgm-3
:
:
:
.
Clock Display
Timer
Pgm-1
Level Meters
Pgm-2 or Pgm-3
Level Meters
Cue/Talkback Speaker
Meter Panel Components
