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18-7
Measure Commands
CGRade:EHEight
Measures the duty cycle of the RZ (Return-to-Zero) eye diagram on the color graded display.
If the source is not set, the lowest numbered signal display that is on will be the source of the
measurement. <source> is {CHANnel<N> | FUNCtion<N> | CGMemory}.
Mode Eye mode only. Ensure that the eye type is set to RZ. See “DEFine” on page 18-11.
Query :MEASure:CGRade:DCYCle? [<source>]
This query returns the duty cycle of the color graded display.
Returned Format [:MEASure:CGRade:DCYCle]<value>[,<result_state>]<NL>
<value> is the duty cycle. If SENDvalid is ON, the <result_state> is returned with the mea-
surement result. Refer to Table 18-3 on page 18-30 for a list of the result states.
Example 10 OUTPUT 707;”:MEASURE:CGRADE:DCYCle”
CGRade:EHEight
Command :MEASure:CGRade:EHEight RATio [,{CHANnel<N> | FUNCtion<N> | CGMemory}]
Measures the eye height on the eye diagram of the current color grade display. The data for
color grade display is the same as for gray scale display. If the source is not set, the lowest
numbered signal display that is on will be the source of the measurement.
Mode Eye mode only.
Query :MEASure:CGRade:EHEight? RATio [,{CHANnel<N> | FUNCtion<N> | CGMemory}]
Returned Format [:MEASure:CGRade:EHEight] <eye_height>[,<result_state>]<NL>
If SENDvalid is ON, the <result_state> is returned with the measurement result. Refer to
Table 18-3 on page 18-30 for a list of the result states.
Example 10 OUTPUT 707;”:SYSTEM:HEADER OFF”
20 OUTPUT 707;”:MEASURE:CGRADE:EHEight?”
CGRade:ERATio
Command :MEASure:CGRade:ERATio <format> [,{CHANnel<N> | FUNCtion<N> | CGMemory}]
Measures the extinction ratio on the eye diagram of the current color grade display. The dark
level or dc offset of the input channel must have been previously calibrated. The data for
color grade display is the same as for gray scale display. If the source is not set, the lowest
numbered signal display that is on will be the source of the measurement. <format> is {RATio
| DECibel | PERCent}.
Mode Eye mode only.
Query :MEASure:CGRade:ERATio? <format> [,{CHANnel<N> | FUNCtion<N> | CGMemory}]
The query returns the extinction ratio of the color grade display.
Returned Format [:MEASure:CGRade:ERATio] <value>[,<result_state>]<NL>
<value> is the extinction ratio. If SENDvalid is ON, the <result_state> is returned with the
measurement result. Refer to Table 18-3 on page 18-30 for a list of the result states.
Example 10 OUTPUT 707;”:SYSTEM:HEADER OFF”
20 OUTPUT 707;”:MEASURE:CGRADE:ERATIO? RATIO”