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E1852-90007.book Page 57 Monday, February 4, 2002 2:09 PM
RF-Gen Page
N O T E
E1852B Operating Guide
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4. Frequency Offset
You can apply an offset to the carrier signal from –300 kHz to +300 kHz
in 100 kHz steps. This can be used to check how a receiver performs
under extreme conditions.
5. Show Modulation
Clicking Show Modulation opens the Modulation graph window
showing what is being transmitted.
To generate the transmitted modulation pattern display, a small
amount of signal is picked off at the RF output of the test set. The
amplitude of this signal is influenced by the output signal magnitude
and the load/mismatch at the output connector. When the output is
loaded correctly we do not recommend using the Modulation graph
window below -10 dBm output signal levels.
Table 4
RF-Gen Page - Panel Summary
Panel
Parameters
1. Carrier
0 to 78
2. RF Level
-85 to 0 dBm
3. Modulation
CW, Special Burst,
DH1 BS55, DH1 BS33,
and DH1 BS0F
0 khz, ±100kHz,
4. Frequency Offset
±200 kHz and
±300 kHz
5. Show Modulation
PC User Interface
Description
Entry and display of the ISM band channel
number (0-78, 2.402-2.480 GHz)
Entry field or slider to control the RF level
Selects the modulation pattern required.
Selects the frequency offset required
Opens the Modulation Graph window
57
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