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Agilent Technologies 16522A Reference
The Format Menu
Clock Period (internal clock source)
This field toggles from Clock Period, when an internal clock source is
selected, to Clock Frequency, when an external clock source is selected.
You select clock periods in steps of 1, 2, 2.5, 4, 5, 8, and 10. If the keypad is
used to select a value between the step intervals, the value is rounded to the
nearest interval.
The minimum clock period available with Vector Output Mode at Full
Channel 100Mbit/s is 10 ns. The minimum clock period available with Vector
Output Mode at Half Channel 200Mbit/s is 5 ns. Maximum clock period for
either mode is 250 µs.
Clock Frequency (external clock source)
This field toggles from Clock Frequency, when an external clock source is
selected, to Clock Period, when an internal clock source is selected. Set the
clock frequency range to match the frequency of the external clock source.
If the Vector Output Mode is Full Channel 100Mbit/s, you are offered two
clock frequency ranges:
•
Less than 50 MHz
•
Between 50 MHz and 100 MHz
If the Vector Output Mode is Half Channel 200Mbit/s, you are offered three
clock frequency ranges:
•
Less than 50 MHz
•
Between 50 MHz and 100 MHz
•
Greater than 100 MHz
If the external clock is faster than the frequency range selected, the
Agilent 16522A will produce erroneous output vectors.
Clock Out Delay
The Clock Out Delay setting allows you to position the output clock with
respect to data. The zero setting is uncalibrated and should be measured to
determine the initial position with respect to the data. Each numerical
change of one on the counter results in an approximate change of 1.3 ns.
2–4
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