© 2004 Wohler Technologies Inc. ALL rights reserved
21
AMP2-SDA/AVU
and
AMP2-SDA/APP
User Manual P/N
821576
Rev-
A
Section 3:
Technical Information
-6 dB PPM
+8 dB PPM
0 dB PPM
+4 dB PPM
Level Gain Calibration DIP Switch Settings
AMP2-AMPPM Meter Driver PCB (919028)
IC2
IC1
179036 rev B Top Side
P1
P2
Left Meter
Right Meter
Turn pots
clockwise
to
increase
the display level
threshold (sensitivity) in the
associated meter
The two (one per meter)
Level Threshold
DIP switches in the
APP
(PPM) unit are only accessible by removal of the top cover. Each DIP
switch is physically located on the inside front panel above the level meter to which it is dedicated. Each meter can be independently set with
a possibility of four settings; -6, 0, +4, or +8 dBv. Factory setting is +4 dBv. See the diagram below for DIP switch settings.
PPM Level Meter Specifications and Level Threshold Settings
Level Meter Type:
Level Meter Scale:
Level Meter Threshold:
Level Meter Dynamics:
Mechanical
Standard VU
0 to +8 dBv (factory set to +4 dBv),
trim pot adjustable (internal)
VU (full ANSI)
Level Meter Type:
Level Meter Scale:
Level Meter Threshold:
Level Meter Dynamics:
Mechanical
Specify BBC (1 to 7) or EBU type 1
and 2 (specified when ordered)
-6, 0, +4, or +8 dBv: DIP switch
selectable (internal)
PPM
Level Gain Calibration
adjustment for the
AV
(VU) unit is done by adjusting two trim pots (
P1
and
P2
) on the level meter driver PCB
(
919036V
). The units top cover must be removed to access this PCB, which is mounted in the center of the chassis bottom.
P1
adjusts the
left
meter;
P2
adjusts the
right
meter. Clockwise rotation of either meter will
increase
the level of the associated meter. Adjustment range for
each meter is 0 to +8 dBv.
PPM Level Meter Specifications
VU Level Meter Specifications and Level Threshold Adjustment
VU Level Meter Specifications
AMP2-APP Meter Driver PCB
Level Threshold DIP Switch Settings
