|
Model
|
Type
|
Frequency (GHz)
|
|
SIC,WL260-PC230
|
Optical
timing sensor
|
|
|
PHI,PM6666
|
Universal
frequency counter
|
dc~1
|
|
HP,53181A
|
Universal
frequency counter
|
dc~3
|
|
HP,5350A
|
Universal
frequency counter
|
|
|
HP,5352B
|
Automatic
microwave counter
|
10Hz~20GHz
|
|
HP,5385A
|
Universal
frequency counter, DC operation
|
dc~1GHz
|
|
|
