SDI

16T202DA1J (Rev 1.0)

Page 18 / 18

7.OPERATING RECOMMENDATIONS

7.1 Avoid applying excessive shock or vibration beyond the specification for the VFD module.

7.2 Since VFDs are made of glass material, careful handling is required.

i.e. Direct impact with hard material to the glass surface(especially exhaust tip) may crack

the glass.

7.3 When mounting the VFD module to your system, leave a slight gap between the VFD glass

and your front panel.

The module should be mounted without stress to avoid flexing of the PCB.

7.4 Avoid plugging or unplugging the interface connection with the power on, otherwise it may

cause the severe damage to input circuitry.

7.5 Slow starting power supply may cause non-operation because one chip micom won't be reset.

7.6 Exceeding any of maximum ratings may cause the permanent damage.

7.7 Since the VFD modules contain high voltage source, careful handling is required during

powered on.

7.8 When the power is turned off, the capacitor does not discharge immediately.

The high voltage applied to the VFD must not contact to the ICs. And the short-circuit of

mounted components on PCB within 30 seconds after power-off may cause damage to those.

7.9 The power supply must be capable of providing at least 3 times the rated current, because

the surge current can be more than 3 times the specified current consumption when the

power is turned on.

7.10 Avoid using the module where excessive noise interference is expected. Noise may affects

the interface signal and causes improper operation. And it is important to keep the length of

the interface cable less than 50cm.

7.11 Since all VFD modules contain C-MOS ICs, anti-static handling procedures are always required.