Elcometer FD700DL+ Operating Instructions Manual page 61

Menu (Thick.)
TUNE MEASURE
MODE
POLARITY
PULSE
PULSER VOLT
DAMPING
ATTN
GAIN
AGC
GT1 GATE1
(GATE 1)
GATE1 WIDTH
THRESHOLD1
GT2 GATE2 WIDTH
(GATE 2)
HOLDOFF 2
THRESHOLD2
Function
Choose which measurement mode to use.
The gauge operates on a zero crossing detection principle.
This feature toggles which stroke of the cycle the crossing
detection uses, either positive or negative.
Your gauge has adjustable pulse width (SPIKE, THIN, or
WIDE) for both high penetration and resolution
applications. The pulse width refers to the duration of time
the pulser is on.
Provides a 50 V cut/boost to the pulser. The standard
setting is 150 V. Provides greater penetration for difficult
material types, or increased resolution on noisy materials.
Provides multiple
impedance of the transducer and therefore optimise
transducer performance.
Provides increased or decreased amplifier strength by a
power of 10 (20dB). This 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.
Increases or decreases the overall amplitude of the signal.
Gain is similar to the volume control on a stereo receiver.
When operating in E-E or E-EV mode, the gauge adjusts the
gain automatically. Alternatively, the AGC can be manually
controlled.
Sets the start of the gate, according to time/distance.
Sets the overall width of the gate, in terms of distance, from
the starting value of Gate1
Sets the sensitivity level of Gate1. The amplitude of the
signal must reach or exceed this threshold level before a
measurement is detected.
Sets the overall width of the gate, in terms of distance, from
the starting value of HOLDOFF 2.
Delay the starting point of Gate2 a specific distance from the
first detection point found inside of the boundaries of the
Gate 1 settings. If no detection is found, the value of GATE1
WIDTH is used as a starting value for Gate2.
Sets the sensitivity level of Gate2. The amplitude of the
signal must reach or exceed this threshold level before a
measurement is detected.
Description
input impedances to match the
60