Technical data

516 Agilent Infiniium 9000 Series Oscilloscopes Programmer's Reference
25 Measure Commands
<data_rate> A real number for the base data rate in bits per second.
<damping_
factor>
A real number for the damping factor of the PLL.
<ojtf_loop_
bandwidth>
A real number for the cutoff frequency for the PLL to track.
<multiplier> An integer used as the multiplication factor.
<clock_freq> A real number used for the clock frequency of the PLL.
Example This example sets the clock recovery method to Second Order PLL, a
nominal data rate of 4 Gb/s, and a damping factor of 1.0.
myScope.WriteString ":MEASure:CLOCk:METHod:OJTF SOPLL,4E9,2.4E6,1.0"
Query :MEASure:CLOCk:METHod:OJTF?
The :MEASure:CLOCk:METHod:OJTF? query returns the state of the clock
recovery method.
Returned Format
[:MEASure:CLOCk:METHod:OJTF]
{FOPLL,<data_rate>,<ojtf_loop_bandwidth>}
| {EQFOPLL,<data_rate>,<ojtf_loop_bandwidth>}
| {SOPLL,<data_rate>,<ojtf_loop_bandwidth>,<damping_factor>}
| {EQSOPLL,<data_rate>,<ojtf_loop_bandwidth>,<damping_factor>}
| {EXPFOPLL <source>,{RISing | FALLing | BOTH},
<multiplier>,<clock_freq>,<ojtf_loop_bandwidth>}
| {EXPSOPLL <source>,{RISing | FALLing | BOTH},
<multiplier>,<clock_freq>,<ojtf_loop_bandwidth>,<damping_fact>}
Example This example places the current setting of the clock recovery method in
the variable strSetting, then prints the contents of the variable to the
computer's screen.
myScope.WriteString ":SYSTem:HEADer OFF"
myScope.WriteString ":MEASure:CLOCk:METHod:OJTF?"
strSetting = myScope.ReadString
Debug.Print strSetting
See Also • ":MEASure:CLOCk:METHod:JTF" on page 513
• ":MEASure:CLOCk:METHod" on page 507