DOCUMENT NO.
REV.NO
PAGE
TNDARD
NAME
SPECIFICATION FOR APPROVAL
1.0 10/10
6. OPERATING RECOMMENDATIONS
6.1 Avoid applying excessive shock or vibration beyond the specification for the VFD module.
6.2 Since VFD is made of glass material, careful handling is required.
6.3 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.
6.4
Avoid
plugging
or
unplugging
the
interface connection
with
the
power on,
otherwise
it
may
cause
severe damage to input circuitry.
6.5 Slow starting power supply may cause non-opera
tion because one chip Mi-com won’t be reset.
6.6 Exceeding any of maximum ratings may cause the permanent damage.
6.7 Since the VFD module contain high voltage sour
ce, careful handling is required while power is on.
6.8 When the power is turned off, the capacitor does not discharge immediately.
So the high voltage applied to the VFD must not get in contact with ICs.
In other words,
short-circuit of mounted
components on
PCB within 30 seconds after power-off
may
cause damage to the module.
6.9 The power supply
must be
capable
of providing at least 3
times
the rated current, because the surge current
may be 3 times the specified current consumption when the power is turned on.
6.10 Avoid using the module where excessive noise interference is expected.
Noise may affect the interface
signal
and cause
improper operation. It
is important to keep
the length
of the
interface cable less than 50cm.
6.11 Since all VFD modules contain C-MOS ICs, an
ti-static handling procedures are always
required.