8588A/8558A
Operators Manual
56
Table 14. Equivalent Resolution/Gate Setting
Counter Display Resolution Counter Gate
8 digits 1 s
7 digits 100 ms
6 digits 10 ms
5 digits 1 ms
4 digits 100 μs
(Parameter): Allows display of either frequency (default) or period.
(Z in): Allows selection of either 50 Ω (default) or High impedance
(10 kΩ).
(Measure Setup): Shows the screen below:
iei012.png
Coupling: Sets the input path to either (AC) (default) or (DC).
Bandwidth Limit: Can be set to (ON) or (OFF). When Zin is set to
50 Ω, with Bandwidth Limit ON, the bandwidth (-3 dB) is 1.5 MHz. When Zin is
set to High, with Bandwidth Limit ON, the bandwidth (-3 dB) is 1 MHz. The
bandwidth (-3dB) is 100 MHz, with Bandwidth Limit OFF and Zin set to 50 Ω.
With Zin set to High, and using an external in-line terminator on the rear BNC
Freq IN, the bandwidth is also 100 MHz.
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