TB 9-4931-538-40
Table 4. Bandwidth Check
Part 1
Synthesized signal generator power output readings
50
MHz
_________mV
12.42
GHz
_________mV
18
GHz
_________mV
Part 2
Test instrument V rms readings from display
Frequency
CH 1
CH 2
CH 3
CH 4
50
MHz
_________mV
_________mV
_________mV
_________mV
12.42
GHz
_________mV
_________mV
_________mV
_________mV
18
GHz
_________mV
_________mV
_________mV
_________mV
Part 3
Example of formula to provide bandwidth checks
V rms 50 MHz
Gain = 10 log10
Power meter reading high frequency
(7) Connect equipment as shown in figure 1, CONNECTION B.
(8) Press the SYSTEM CONTROL /CLEAR DISPLAY pushbutton and allow 64
averages to accumulate (top left corner of display).
(9) Press the More key.
Measure Chan 1 and Precision Fine will be
highlighted.
(10) Press the More (vertical) key until RMS Voltage menu is displayed. Press
RMS Voltage key and record RMS voltage of synthesized signal generator in table 4, part 2.
NOTE
If "Edges required for measurement not found" appears on the
display during (11) below, it will be necessary to select
Channels menu and set Channel 1 display Off after
SYSTEM CONTROL/CLEAR DISPLAY pushbutton is
pushed and allow 64 averages to accumulate.
NOTE
The entire procedure must be completed before the bandwidth
calculations can be determined.
(11) Repeat (7) through (10) above for Channels 2, 3, and 4.
(12) Connect equipment as shown in figure 2, CONNECTION A.
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