User guide

821024: AMP1-DA/106 User Guide

AMP1-DA/106 User Guide

Rear Panel 10-Position DIP Settings for the Level Meters

PPM Characteristics (Ballistics)

The PPM characteristics determine the Integration Time (rise time) and

Return Time (fall time) of the level meter. The Integration Time is the

time it takes for the lighted segments of the level meter, after

application of a 5 Khz tone at a certain reference level, to rise within a

specified number of dB of that level. Return Time is the time it takes for

the lighted segments of the level meter to fall a certain number of dB

after removal of a 5 Khz tone of a certain reference level. The PPM

characteristics available for selection using DIP switch sections 7 and 8

of the 10-position Internal DIP Switch are shown in Table 1–2 below.

Phase Correlation

Since it is sometimes helpful to observe phase relationships between

two signals being monitored, you can enable a Phase Correlation

feature within the lower section of the existing bar graph pair in the

AMP1-DA/106 units. Set the internal 10-position DIP switch located on

the PCB. The labels for this feature (Figure 1–11 on page 18) can be

specified at the time of order or requested from Wohler for application

to existing units.

Table 1–2 PMP Characteristics

Type Rise and Fall Times

IEC268-10, Type 1

Integration (Rise) Time is 5 ms (-2 dB).

Return (Fall) Time is 1.7 seconds (20 dB).

IEC268-10, Type 2

Integration (Rise) Time is 10 ms (-2 dB).

Return (Fall) Time is 2.8 seconds (24 dB).

DIN 4506

Integration (Rise) Time is 5 ms (-2 dB).

Return (Fall) Time is 1.5 seconds (20 dB).

Single Sample

Integration (Rise) Time is a single sample.

Return (Fall) Time is 1.5 seconds (20 dB).