Dakota Ultrasonics CMX DL plus - Manual (Page 33)

CMX
DL+
High Performance Material & Coating Thickness Gauge
29
ATTN: This feature is a 20dB attenuator, as well as a 20dB amplifier. The primary
purpose is to is to offer further flexibility to the CMX
DL+
, by either cutting or boosting
signal strength. In instances where the 60 dB range is not enough, or too much, this
feature allows you to increase/decrease the amplifier strength by a power of 10 or
(20dB). The standard setting is zero, which is an arbitrary value at a constant
attenuation. The attenuation value is added to the gain value. Therefore, if the
attenuator is increased to 20dB, this value is added to the value of the gain setting.
Refer to page 129 for a further explanation.
GAIN: The CMX
DL+
has 100dB gain range from (-30 to 70 dB), used in conjunction
with the attenuator feature above. This feature is used to increase/decrease the
power or amplitude of the signal. This might easily be considered as similar to
turning the volume up or down on a stereo receiver. Refer to page 74 for further info.
AGC: This an automatic gain control used in E-E (echo-echo), and E-EV (echo -echo
verify). The CMX
DL+
is equipped with an automatic gain control when operating in -E
(echo-echo), and E-EV (echo -echo verify) modes only. This feature automatically
increases/decreases the power or amplitude of the signal, to an optimal input to
output signal ratio. This might easily be considered as similar to turning the volume
up or down on a stereo receiver. Alternatively, the AGC can be manually controlled.
The CMX
DL+
is equipped with manual override, using an arbitrary range of 1-20
clicks. The higher the number the better the dynamic gain range, and visa versa.
Refer to page 74 for further info.
3.6 GT1 – Menu
GATE1: Gates allow the user to view a specific measurement range, or sections of
the waveform, and ignore others. The Gate1 feature adjusts the start of the gate,
according to time/distance. Gate 1 can be used in all pulse-echo and echo-echo
measurement modes. Refer to page 83 for further info.
GATE1 WIDTH: This feature allows the user to set the overall width of the gate, in
terms of distance, from the starting value of Gate1. Refer to page 83 for further info.
THRESHOLD1: Enables the user to set the sensitivity level of Gate1. The amplitude
of the signal must reach or exceed the threshold level before a measurement is
detected. Refer to page 83 for further info.
3.7 GT2 – Menu