Http://www.dbltek.com VP-102 / VP-202 User Manual
37
The blocks highlighted in green are available for programming in the URL below.
http://xxx.xxx.xxx.xxx//en_US/gain.html
The first 3 rows in the gain settings page shows the 3 modes of operation: Handset, Handsfree, and Headset.
Each mode uses the same configuration as shown in the block diagram above. The left hand column (first 3
rows) shows the mode of operation. The various gain settings are described as follows:
g)
Microphone AFE refers to the Analog Front End Gain block (
G1
).
h)
Microphone VGC refers to the Volume Gain (
G3
). This gain should be changed with caution since it
affects the tone level as well. If the tone generated is a DTMF tone, changing this gain may affect the
detection of the DTMF tone by the outside network.
i)
Speaker refers to the Volume Gain (
G4
).
j)
Microphone CGC on the 4
th
row in the Gain Settings page refers to the Encoder Calibration Gain CGC
(
G2
). Changing this gain does not affect the signals from the Tone / FSK generator.
k)
Speaker Levels refer to the relative levels in the volume settings. There are a total of 6 volume settings
from 1 to 6. The relative levels are listed in ascending order. When the volume setting is set to 1, the
Decoder Calibration Gain CGC (
G5
) is set to its preset value (cannot be changed) + the relative level
specified for volume setting 1. If the relative level is blank,
G5
is set to its minimum value. This
means that the speaker is effectively muted.
l)
The Analog Front End Gain (
G6
) is factory preset and cannot be changed.
