Gilras GRU-5000 A, Operation Manual

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Chapter 4 Operation
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point of the reflected pulse front and the threshold will be the basic point to calculate
transmission time of ultrasound in different tissues.
Threshold Line:
The threshold value displayed in graph.
Date and Time Display Area:
Display current date and time.
GAIN: Gain control key. Range of variation: 0-50dB; the default value is 30dB. Click to select and
the key turns to green. The value of gain is adjusted by ▲ and ▼ keys when it is selected;
OS: OS/OD (left/right eye) selection key. Click to switch between left eye and right eye;
AUTO: Measuring mode selection key. Click to switch between AUTO (automatic measurement)
and MANL (manual measurement);
CONT: Measuring method selection key. Click to switch the measuring methods between CONT
(contact method) and IMME (immersion method);
NORM: Eye model setting key. Click to open the MODE SETTING dialogue box and set eye
model. The MODE SETTING dialogue box includes the settings of: Measuring Modes, Measuring
Methods and Eye Models, see §4.3.2.2.c for specific operation;
SCAN/FREEZE
:
Scan/Freeze control key. Click to start or freeze scanning. The key is blue
indicates the state of scanning stopped; while green indicates scanning;
: Up and Down keys, used to adjust the position and value. The keys are used to
adjust the position of the Threshold Line when the Threshold Line displayed, and to adjust the
gain when the GAIN function is activated. In other cases, they are used to change the position of
the cursor indicator (blue point) and cursor bar. The position of the cursor and cursor bar indicates
the position of the current operating data group;
MARK: Mark key, used to mark unreliable data group. The marked group stores data and
waveform, but doesn't participate in calculation. The cursor stays in the marked group, click again
to cancel the mark;
DEL: Delete key, used to delete unreliable data and waveform. Click to call out the dialogue box.
Choose YES to delete the selected data and waveform. The deleted data will not be restored.
Choose NO to give up deletion and quit the dialogue box;
CLEAR: Clear key, used to clear data and waveform. Click to call out the dialogue box. Choose
YES to clear all data and waveform displayed. The cleared data will not be restored. Choose NO
to give up clear and quit the dialogue box, see §4.3.2.6 Save and Clear under Measuring
Interface;
IOL: IOL (Intraocular Lens) Calculation key. Click to enter the IOL Interface;
MENU: Menu key. Click to enter the MENU Interface, from where it is able to enter other
interfaces;