Huvitz HNT-1 Operating instructions

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HNT-1/1P
Troubleshooting

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Contents
1. Auto Tracking issue
2. Data issue
3. Connection with HRK MATE
4. Assembly & Disassembly
5. Upgrade the software
6. Engineer Setup Mode

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1. Auto Tracking issue
[HNT-1/1P] Auto Tracking issue

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1) Specification comparisons
MANUFACTURER NIDEK HUVITZ
PRODUCT NT-530P HNT-1/1P
Motor
Working Range
Y: ±15mm
X: ±5mm
Z: ±5mm
Y: ±15mm
X: ±5mm
Z: ±5mm
2) Working Range
HNT-1 and 1P movement range is same with NIDEK’s
tonometer.
(Y: ±15mm, X: ±5mm, Z: ±5mm)
[HNT-1/1P] Auto Tracking issue

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3) Focus Indicator
If the main body unit get out of the working range of auto tracking in the forward and backward, right and left, up
and down, the indicator is displayed.
Move the joystick lever toward the patient
Move the joystick lever toward the operator
Move up by rotating the joystick lever to the
clockwise
Move down by rotating the joystick
lever to
the counter clockwise
Move the joystick lever to the left
Move the joystick lever to the right
[HNT-1/1P] Auto Tracking issue_Focus Indicator

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- We provide the quick guide in the product box to minimize any issues that occur during
installation from the 11th of June, 2018
Reference
[HNT-1/1P] Auto Tracking issue_Quick guide

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4) Upgrade the Software to the latest version (Over V1.0.4)
※ We highly recommend you to upgrade the software to the latest version (Over V1.0.4).
Improvement History
1. Stabilized the Auto-Tracking
2. Stabilized the pachymetry for measuring and image
3. Stabilized the movement of chinrest to avoid being stuck at bottom side
4. Added the Z-axis guide message “Front/Rear” on screen when focusing on target with
3D Auto-Tracking mode.
5. Changed movement type of X axis center (when shift the measurement type from
Tracking mode to manual mode)
6. Stabilized the serial communication for transferring data
7. After taking ACA image, Enable to take Anterior Chamber Depth value in Annotation mode
[HNT-1/1P] Auto Tracking issue_the software

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1. Start DNW program, set your PC’s COM port number and baud rate(115200)
2. Connect PC to HNT-1/1P with serial cable
3. Pressing the button of joystick, then turn on HNT-1/1P
4. Select “Serial Port” -> “Transmit” menu
5. Choose “HNT-1 / 1P **.bin” file, then press OK button
6. After downloading, turn off and on the HNT-1/1P
* If the version checked is earlier than 1.0.4, proceed to 1.0.4 or later as follows :
(It should takes around 5minutes.)
How to upgrade the software
[The Screen of progress with upgrade]
[HNT-1/1P] Auto Tracking issue_the software
4) Upgrade the Software to the latest version (Over V1.0.4)

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5) How to adjust the LED brightness
[Enter the Focus Align Test]
1. Enter the Engineer mode: Press PRINT -> R -> L -> SETUP button on the main screen
2. Press the Focus Align Test
1 4
23
[HNT-1/1P] Auto Tracking issue

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※Preparation
[REF/KERATOMETER Model-Eye] [HNT Calibration JIG of 30mmHg]
Before you check the Auto Tracking and Focus related LEDs,
prepare the following tools :
[HNT-1/1P] Auto Tracking issue

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※Preparation
Before you check the Auto Tracking and Focus related LEDs,
prepare the following tools :
[Plastic Screwdriver]
The Plastic Screwdriver is used to rotate the
Variable Resistance attached to the Main Board.
※ Normal screwdriver that made of
electrically charged material can cause
problems when turning variable resistance.
[HNT-1/1P] Auto Tracking issue

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5) How to adjust the LED brightness
[HNT-1/1P] Auto Tracking issue_Aiming LED
[Adjust the brightness for Aiming LED]
※ The REF/KERATOMETER model eye should be used.
1. Check the ASZ parameter and adjust this value if necessary
: ASZ: Size (Brightness) --> SIZE: 10~25 / Brightness: over 235.
-Engineer Setup Mode → ③ Focus Led Setup → ⑤ Adjust the Aiming LED
- Adjust the VR1 (MAX) on the Mainboard using the plastic screwdriver (Clockwise: increase)
VR1

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[Adjust the brightness for External LED]
※ The REF/KERATOMETER model eye should be used.
1. Check the LUSZ, LDSZ, RUSZ and RDSZ parameter and adjust this values if necessary
: LUSZ, LDSZ, RUSZ, RDSZ: Size (Brightness) --> SIZE: 25~35 / Brightness: over 200
-Engineer Setup Mode → ③ Focus Led Setup → ③, ④Adjust the External LED R/L
- Adjust the VR2(R) and 3(L) on the Mainboard using the plastic screwdriver (Clockwise: increase)
VR2(R)
5) How to adjust the LED brightness
[HNT-1/1P] Auto Tracking issue_EXT LED
VR3(L)

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[Adjust the brightness for PD(APPL) LED]
※ The REF/KERATOMETER model eye should be used
1. Check the Psd_Anode0/1 parameter and adjust this values if necessary
: Match the z-ratio to “0.00” -->Psd_Anode0/1: approximately 500~750
- Engineer Setup Mode → ③ Focus Led Setup → ⑥ Adjust the PD(APPL) LED
- Adjust the VR6 on the Mainboard using the plastic screwdriver (Clockwise: increase)
※ You have to check the APP value after adjusting the PD(APP) LED
5) How to adjust the LED brightness
[HNT-1/1P] Auto Tracking issue_PD(APPL) LED
VR6

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[Adjust the brightness for PD(APPL) LED]
※ Check the Psd_Anode0/1 parameter values without Model-Eye
-> Psd_Anode0/1 parameter must be less than 80 if there is no subject to be examined
5) How to adjust the LED brightness
[HNT-1/1P] Auto Tracking issue_PD(APPL) LED

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[Adjust the APP1 value for PD(APPL) LED]
※ The HNT Calibration JIG of 30mmHg should be used
2. After that, you should check the appl1_val and adjust this if necessary
: Match the z-ratio to “0.00” -->APPL_VAL: 600~950
- Adjust the VR7 on the Mainboard (Clockwise: increase)
- Engineer Setup Mode → ③ Focus Led Setup → ⑥ Adjust the PD(APPL) LED
※ You have to check the Psd_Anode0/1 after adjusting the PD(APPL) LED
5) How to adjust the LED brightness
[HNT-1/1P] Auto Tracking issue_PD(APPL) LED
VR7

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[Arrange the PSD and PD Harness]
1. After disassemble the body cover, you may see the combined PSD and PD Harness in the
Main Board as shown in the picture below.
6) How to arrange PSD and PD Harness
[HNT-1/1P] Auto Tracking issue_PSD and PD Harmess

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[Arrange the PSD and PD Harness]
2. Arrange PSD and PD Harness so that they are not crossed together when combined.
(May cause interference in each Harness)
6) How to arrange PSD and PD Harness
[HNT-1/1P] Auto Tracking issue_PSD and PD Harmess

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- Variable resistor information
VR9 PRESSURE ZERO OFFSET
VR4 FIXATION LED
VR3 EXTERNAL LED L
VR2 EXTERNAL LED R
VR7 PD
VR6 APP LED
VR5 PACHY LED
VR1 AIMING LED
VR8 PRESSURE AMP
Reference
-If adjusting LED doesn’t make problem solved, please share FA team the photo or video
showing problematic symptoms and Focus Align Test values which are measured by model eye
[HNT-1/1P] Auto Tracking issue

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2. Data issue
[HNT-1/1P] Data issue