Guildline 7520, Руководство по эксплуатации и инструкция

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Section 2
OM7520-B-00
27 September, 2019
2-2
2.4. WARM-UP AND SELF ALIGNMENT
When the 7520 is first powered up a red screen will appear during an initialization phase
which takes about 20 seconds. Following successful initialization, you will be greeted by
the main screen, the heaters will be automatically turned ON and the status bar at the
bottom of all screens will show “Warming up”. The warming up process takes about 6
hours and varies slightly depending on the ambient temperature. During this time the
internal temperature stabilized chamber is warming up to the default set point of 37
degrees.
You still can use the device and access the functionality of the Voltage Divider by going
to the “Setup” menu and selecting “Non-Align”. This will allow going through the
various configurations and perform functional measurements. However the 7520
specifications are not guaranteed until the temperature chamber is stabilized.
Once the warming up is complete the screen will indicate “Warmed up”.
At this point you will need to select “Self-Align” found under the “Setup” menu. If you
attempt to run this “Self-Align” before the system is warmed up it will not be initiated
since this function cannot be done until the unit has reached a stable temperature. The
user will be brought to the “Self-Alignment” screen where the user will see the
“Warming up” progress bar. After warming up is completed, the Self-Alignment will
start automatically. Progress of the Self-Alignment function is shown for each stage of
the divider by a progress bar and a “Self-Alignment in process” appears in the status bar
of all screens. After successful completion of the “Self-Alignment” the bottom banner of
the screens displays” Self-Alignment passed”. The Self Alignment takes about 2 hours to
complete.
WARNING: If the 7520 has been used in the “Non Align” mode with a voltage higher
than 25 V, the “Self Alignment” should not be invoked for 6 hours in order to ensure
temperature stability.
If the warm-up fails, the status will show “Warm up failed”. Also note that if this
message is displayed any time after continuous use it could be the result of either the
7520 being in an environment that is too warm or the temperature control has failed. Be
aware that the proximity of another piece of equipment could cause warm air to blow on
the Voltage Divider and cause the triggering of the “Warm up Failed” alarm.
If the warm-up fails, power down the 7520 for an hour and ensure the environment is
within the operating limits, and then power it back on. If the temperature chamber still
fails to stabilize then the unit must be returned to the factory for repair.
If the Self-Alignment fails, the status bar will display “Self-Alignment failed”. If this
happens it is recommended to initiate the Self-Alignment function a second time by
pressing “Self-Align” in the “Setup” screen. If the problem persists the unit needs to be
return to the factory.