User manual

AMP2A and AMP2A-2S User Manual P/N 821553 Rev-B Section 3: Technical Information

Level Meter Settings and Specifications

Level Meter DIP Switch Settings

Two DIP switch modules, accessed through holes in the top cover, allow the user to set the VU/PPM Display Mode and Input Level

Gain Calibration. There are two DIP switch modules; one for each of the two meter bargraphs. There are four sections (1, 2, 3, 4)

on each DIP switch module. The first two sections (1 and 2) are for setting the level meter Input Level Gain Calibration and the

second two sections (3 and 4) are for setting the VU/PPM Display Mode.

Input Level Gain Calibration Settings:

DIP switch sections 1 and 2 set the level meter Input Level Gain Calibration, which determines the level of the input signal that

will result in a "0" reading on the meter bargraph. The factory setting is +4 dBu, but can be set for -6 dBu, 0 dBu, or +8 dBu by the

user. See the diagram below for settings.

Bargraph Display Modes:

DIP switch sections 3 and 4 determine how levels are displayed (PPM or VU mode characteristics). The factory setting is VU. See

the diagram below for settings.

Level meter type:

Segment quantity:

Meter display modes (DIP switch selectable):

Level gain (DIP switch selectable):

Level meter scale:

Dynamic range:

Midscale resolution:

Bargraph Length:

LED segment pitch:

LED bargraph display

or PPM

-6, 0, +4, +8 dBu

+4 (peak) to -40 dB

44 dB

1 dB

2" (50.8 mm)

0.1" (2.54 mm)

Installation Note: The two level meter Input Level Gain Calibration and VU/PPM Display Mode DIP switch modules are

accessible through openings in the top cover of the unit. Any adjusments to the DIP switch modules should be performed before

installing the unit into an enclosed rack.

LED Bargraph Level Meter Specifications

-6 dBu

AMP2A 20-Segment Bargraph Level Meter

DIP Switch Settings (719030 PCB)

312 4

Gain Calibration

1234 1234

0 dBu +4 dBu +8 dBu

PPM

421 3

1 32 4

Display Mode