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4-15
4.2.2
Input A Attenuator Check
4.2.2.1
Set the counter to its home state. Select 50 ohms input impedance for
input A.
(Command code: IP ALI)
4.2.2.2
Connect the counter to the signal generator as shown in Figure 4-13.
Figure 4-13, Input A X10 Attenuator Check Configuration
4.2.2.3
Set the signal generator to 1 MHz, 10 mV. Increase the signal generator output level
until the counter gives a stable reading. Note the signal generator output level.
4.2.2.4
Enable the counters input A attenuator (Command code AAE) and verify that the
2251A no longer counts. Increase the signal generator until the counter gives a stable
reading. Note the signal generator output level and verify that this level is
approximately ten times the level previously noted.
4.2.2.5
Disconnect the test equipment.
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Содержание 2251A
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