3-7
IM 701240-01E
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App
Index
Preparations for Measurements
LEDs on the Frequency Module
On the front panel of the frequency module (701280 (FREQ)) are LEDs for each
channel. These LEDs allow you to check the input condition of the pulse.
701280 (FREQ)
ACT
OVER
1M 35pF
ACT
OVER
FREQ
1M 35pF
LED
Illuminated in green: When pulse is applied
Illuminated in red: When the input voltage
level is over range.
Off: When pulse is not applied
Note
•
The LEDs on the frequency module illuminates in green when pulse is applied and red when
the input voltage level is over range. It is independent of the start/stop condition of waveform
acquisition of the SL1400.
•
If the frequency module preset (see section 5.17) is set to “EM Pickup (electromagnetic
pickup),” the LED does not illuminate in red even when the input voltage level is over range.
3.3 Installing Input Modules