4-5
4.1 Turning on and off the Power
Notes:
If neither power display lamp lights, check the following:
1. Are the power cables properly connected to the power inlet and power
plug?
2. Are the specified fuses set in the fuse holders?
3. Is the power supply voltage correct?
Notes:
The left figure shows the reference signal input/output connectors on the
MT8801C rear panel. The internal 10 MHz reference signal is output from the
10 MHz OUTPUT connector at TTL level. When the internal reference signal
is not used, input an external reference signal satisfying the following condi-
tions to the 10 MHz/13 MHz Reference Input connector:
i) Frequency: 10 MHz ±1 ppm, signal level: 2 to 5 Vp-p
ii) Frequency: 13 MHz ±1 ppm, signal level: 2 to 5 Vp-p
Set the reference frequency on the Instrument Setup screen (see paragraph
4.3.1) according to the external reference signal used as described in i) and
ii) above.
Warm up the external reference signal equipment separately from warming
up the MT8801C.
10 MHz
Buffered
Output
10 MHz/13 MHz
Reference
Input
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