GU256X128C-3900B Noritake Company Inc, GU256X128C-3900B Datasheet - Page 70

• Manufacturer Part Number: GU256X128C-3900B
• Description: MODULE VF GRAPHIC DISPLY 256X128
• Manufacturer: Noritake Company Inc

Specifications of GU256X128C-3900B

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Notice for the Cautious Handling of VFD Modules
Handling and Usage Precautions:
Please carefully follow the appropriate product application notes and operation standards for proper usage, safe
handling, and maximum performance.
[VFD tubes are made of glass]
[High voltage]
[Cable connection]
[Electrostatic charge]
[Structure]
[Power]
[Storage and operating environment]
[Disposal]
[Other cautions]
Notice:
[Operating consideration]
The edges of the VFD glass envelope are not smooth, so it is necessary to handle carefully to avoid injuries to
hands.
Use caution to avoid breaking the VFD glass envelope, to prevent injury from sharp glass particles.
The tip of the exhaust pipe is fragile so avoid shock from impact.
It is recommended to allow sufficient open space surrounding the exhaust pipe to avoid possible damage.
Please design the PCB for the VFD module within 0.3 mm warping tolerance to avoid any forces that may
damage the display due to PCB distortion causing a breakdown of the electrical circuit leading to VFD failure.
Avoid touching conductive electrical parts, because the VFD module uses high voltage exceeding 30 – 100
volts.
Even when electric power is turned off, it may take more than one minute for the electrical current to discharge.
Do not unplug the power and/or data cables of VFD modules during operation, because unrecoverable damage
may result.
Sending input signals to the VFD module when not powered can cause I/O port damage.
It is recommended to use a 30cm or shorter signal cable to prevent functional failures.
VFD modules need electrostatic-free packaging and protection from electrostatic charges during handling and
usage.
During operation, VFD and VFD modules generate heat. Please consider sufficient heat radiation dissipation
using heat sink solutions.
Preferably, use UL-grade materials or components in conjunction with VFD modules.
Warp and twist movement causes stress and may break VFDs and VFD modules. Please adhere to allowances
within 0.3mm at the point of attachment.
Apply regulated power to the VFD module within specified voltages to protect from failures.
VFD modules may draw in-rush current exceeding twice the typical current at power-on, so a power supply with
sufficient capacity and quick starting of the power regulator is recommended.
VFD module needs a specified voltage at the point of connection. Please use an adequate power cable to
avoid a decrease in voltage. As a safety measure, a fuse or other over-current protection is recommended.
Illuminating phosphor will decrease in brightness during extended operation. If a fixed pattern illuminates for an
extended period (several hours), the phosphor efficiency will decrease compared to the non-operating
phosphor, causing non-uniform brightness.
phosphor segments evenly. Scrolling may be a consideration for a period of time to refresh the phosphor
condition and improve even illumination of the pixels.
A signal cable 30cm or less is recommended to avoid possible disturbances to the signal.
Please use VFD modules under the recommended specified environmental conditions. Salty, sulfuric and dusty
environments may damage the VFD module even during storage.
VFD uses lead-containing materials (RoHS directive exempts these lead compounds in the glass for electronic
devices). When discarding VFDs or VFD modules, please adhere to applicable laws and regulations.
Although the VFD module is designed to be protected from electrical noise, please plan your circuitry to exclude
as much noise as possible.
Do not reconstruct or repair the VFD module without our authorization. We cannot assure the quality or
reliability of unauthorized reconstructed VFD modules.
We do not authorize the use of any patents that may be inherent in these specifications.
Neither whole nor partial copying of these specifications is permitted without our approval. If necessary, please
ask for assistance from our sales consultant.
This product is not designed for military, aerospace, medical or other life-critical applications. If you choose to
use this product for these applications, please ask us for prior consultation or we cannot accept responsibility for
problems that may occur.
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Please consider programming the display patterns to use all
GU-3900B series “General Function” Software Specification