Ceyear 4992A, User Manual

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Chapter IV Operation Guidance
32
beyond the range, the alarm color will be displayed to make the judgment more intuitive.
Click “Alarm Setting” in the window, or click the [Alarm Setting] soft key in the right menu
to open the alarm setting window, and set the upper alarm limit and lower alarm limit. Note
that the alarm setting must be within the measurement range between the upper and lower
limit.
WARNING:
A lot of heat is generated by the internal attenuator in high power
measurement with this port. Note that high power must not be tested
continuously in a long time. At +25
℃
, the power of 20W/43dBm can only
be measured for 10 consecutive minutes. In case of overheating alarm, the
measurement must be stopped immediately. The ON and OFF status of the
tested signal can be switched properly.
2.RF frequency error
The RF meter of 4992A is used for measuring the frequency error between the input signal
and the set frequency point. This is designed for the RF ANT and T/R port. The user can select the
appropriate port to input the tested signal according to the power of the input signal.

Window opening: open the RF meter window by pressing the [Transmitter] hard key or
pressing the [Measurement] hard key and setting the instrument menu. Select the window,
and press the [Full Screen] hard key in the lower part of the screen to maximize the window,
as shown in Fig. 4-5.
Fig. 4-5 Frequency Error Measurement Window

Menu calling: click the touch screen, select the RF meter window as the current active
window, and the corresponding menu will be displayed in the right side of the window, as
shown in Fig. 4-5.

Receiver setting: when the RF meter window is opened, the receiver setting window will pop
up at the same time. Click the interface or right soft key menu, and set the receiver port,
frequency, reference level, IF bandwidth, automatic search, etc. The receiver setting window
is shown in Fig. 4-6.
