Nova Eclipse TG930 - Users Manual
12
3.1 Display Features
1.
Probe In Use
2.
Echo Mode (IP-1st, 1st-2nd, 2nd-3rd)
3.
Battery Level Indicator
4.
Thickness Display
5.
Velocity Reading - Displays When + or - VEL pressed
6.
Scan Bar Scale
7.
Scan Bar
8.
Units (in or mm)
9.
Coupling Indicator
10.
Operational Mode ('A' Auto or 'M' Modified)
3.2 Touch Commands
Some of the Touch Command controls are used to access specific functions.
Others have multiple functions or are used for scrolling and toggling cursors
and changing or inputting selectable values. Details follow in the Operation
Steps.
ON/OFF: Self-explanatory.
ZERO: Establishes Probe initialization.
MENU: Accesses the Main Menu.
LOG: Accesses the Logging function.
ENTER: Select Current Value and Continue
Multi-Function Command Buttons; Used for scrolling or toggling, and for
accessing certain functions:
Up ARROW / VEL +
Down ARROW / VEL
−
Left ARROW / MODE
Right ARROW / SCAN
Nova Eclipse TG930 - Users Manual
13
4. OPERATION STEPS
4.1 Power On - Battery Check - Auto-Off
Momentarily depress the ON/OFF Touch Command. NDT Systems’ Logo
and contact information are displayed. After the system boots, the
Measurement Display automatically switches on. This display contains the
features shown in Section 3.1, above. If a probe is not connected when the
gage is powered ON, a highlight in the Measurement Display reads, NO
PROBE – Press Enter to Select Setup. This prompt serves as a reminder to
either attach the desired probe, or go to Select Setup to choose a saved
setup, or to modify default, automatic setups.
The Battery Level Indicator icon appears on the left side of the LCD display
indicating the current battery charge state. The NOVA TG930 comes with
two AA-size rechargeable NiCad batteries installed in its battery chamber. If
the Battery Level Indicator fails to register more than approximately 20% full-
scale, it is recommended that the batteries be replaced. When power
becomes marginal, the Power-Guard Cutoff feature automatically turns the
power off until the batteries are replaced. If the TG930 fails to respond to
the initial ON/OFF Command, the batteries should be replaced.
To turn the gage off at any time during operation, momentarily press and
briefly hold the ON/OFF button. Also, with a contact-type transducer in use,
the TG930 automatically turns off approximately 10 minutes after non-use.
In either case, all previous settings are retained in memory and will be
restored the next time it is powered up.
4.2 Probe Coupling
First, apply a small amount of couplant to a surface of the Reference
Standard selected. If necessary, refer back to
Section 2.4, Using
Couplants.
Before placing the probe on the Reference Standard, note the
Coupling Icon on the upper-right side of the display.
With the probe uncoupled, the Probe Coupling
Icon appears as shown on the left, with a
space between the probe symbol and the
horizontal bar that represents the surface of
the test object. When the probe is properly
coupled, the Icon changes to that shown on
the right. In this state, the Coupling Icon
indicates satisfactory coupling, adequate
material penetration, and proper probe/beam normalization (perpendicularity
