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Front Panel Power Switch
To prevent malfunction caused by accidental touching, the front power switch of this equipment turns on the
power if it is pressed continuously for about one second in the standby state. If the switch is pressed continu-
ously for one second in the power-on state, the equipment enters the standby state.
In the power-on state, if the power plug is removed from the outlet, then reinserted into it, the power will not
be turned on. Also, if the lines is disconnected due to momentary power supply interruption or power failure,
the power will not be turned on (enters the standby state) even if the line is recovered.
This is because this equipment enters the standby state and prevents incorrect data from being acquired when
the line has to be disconnected and reconnected.
For example, if the data acquisition requires a long time at the BER measurement, momentary power supply
interruption (power failure) might occur during measurement and the line could be recovered automatically
to power-on. In such a case, the equipment may mistake incorrect data for correct data without recognizing
the momentary power supply interruption.
If this equipment enters the standby state due to momentary power supply interruption or power failure,
check the state of the measuring system and press the front power switch to restore power to this equipment.
Further, if this equipment is built into a system and the system power has to be disconnected then recon-
nected, the power for this equipment must also be restored by pressing the front power switch.
Consequently, if this equipment is built into remote monitoring systems that use MODEMs, the standby
function of this equipment must be modified.
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