Ceyear 3943B, Руководство по эксплуатации

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5. Menus
5.1 General Menu
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Fig. 5.7 Receiving End Setting Property Page
Parameters in the receiving end setting property page are described as follows:
[Gain Tracking Speed]
Set the gain tracking speed, including three modes: fast, normal and slow, and the default is normal
mode.
[Automatic Frequency Control]
Set the automatic frequency control switch, including two modes: on/off, which is off by default.
[Beat Frequency Oscillation Frequency]
Set the beat frequency, the frequency range is -8kHz~8kHz, and the default value is 1kHz.
[Switch Point Frequency]
Set the switching point frequency of direct sampling channel, the frequency range is 20MHz-30MHz, and
the default value is 20MHz.
[Frequency Reference]
Set frequency reference mode, including internal reference, external reference and GNSS reference,
and the default is the internal reference.
[Intermediate Frequency Output]
Set the intermediate frequency output switch, which is off by default.
[Demodulation Bandwidth Adaptation]
Set the demodulation bandwidth adaptive switch, which is off by default.
[Channel Bandwidth]
Set the channel bandwidth in LSB/USB demodulation mode.
[External Attenuator]
Choose external attenuators, including: 10dB(71512 2w), 20dB(71512A 2w), 30dB(71512B 2w),
40dB(71512C 2w), 40dB(71512D 25w), or combination of (71512A 2w) and (71512C 2w) and
combination of (71512B 2w) and (71512D 25w).
5.1.2.2 General settings
The general setting property page is shown in Fig. 5.8.