© 2002 Wohler Technologies Inc. ALL rights reserved
17
AMP2-AM Series User Manual P/N 821540 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
AMP2-AMPPM Level Threshold Settings
There are two Level Threshold DIP switches accessible through holes in the
top cover
of the AMP2-AMPPM unit; one for each of
the two level meters. Each DIP switch is physically located above the level meter to which it is dedicated and each can be independantly
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 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 (top cover)
PPM
AMP2-AMVU Level Threshold Adjustment
MVU Level Gain Calibration:
Level Gain Calibration adjustment for the AMP2-AMVU 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.
CAUTION:
Be sure to follow basic safety porocedures when making adjustments to internal componants of a powered piece of
electronic equipment.
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 Meter Specifications and Level Threshold Adjustment
VU Level Meter Specifications
AMP2-AMPPM Meter Driver PCB
Level Threshold DIP Switch Settings
