Tektronix 071-0590-00 user manual Analyzer Commands

Remote Commands

Analyzer Commands

The following commands are found only in the Analyzer command set.

Results Retrieve Commands

Analyzer results commands are used to query the Analyzer for Test, Window, and Totalize interval results. Note that Analyzer numeric results are returned in one three basic formats:.

q<NR1> or integer results, which include various counts such as bits or bit errors, up to a maximum of 16 digits. Examples: 0, 1, 15, 45959, 1234567890123456. Note that at a bit rate of 700 Mb/s, 16 digits can represent a bit count equivalent to over 165 days.

q<NR2> or "real number without exponent" results, such as percentages. Examples: 100.00. 99.99, 0.01, 0.00, 50.00, 27.83.

q<NR3> or "real numbers with exponent" results, such as BER, have three significant digits, with two places to the right of the decimal place, and a signed exponent following the letter "E". Examples: 1.00E-9, 9.99E-7, 2.08E-14.

þNOTE: Returning Current or Previous Test Results. In response to queries for test interval results, the Analyzer will return results from the current interval (so far), or from the previous interval, based on the following rules:

1.If the TEST PREV has been set to CURRENT and a test is in progress, then the instrument will return results from the current test interval. A test is in progress after TEST STATE is set to RUN, until the controller (or user) sets TEST STATE to STOP, or the instrument automatically stops a test at the end of a timed test interval.

2.If TEST PREV has been set to PREVIOUS and there are previous results available, then the instrument will return results from the previous test interval. Previous results become available after TEST STATE has made at least one RUN to STOP transition.

3.Otherwise, the Analyzer will not return results but instead will set the EXE bit (bit 4) of the Standard Event Status Register (SESR).

GB1400 User Manual C-47