Specifications

7-36
Softkey Menu Descriptions
Gating Menu
Configures the error detector to perform SINGLE and
REPETITIVE gating periods that are controlled by elapsed time.
The available units are days, hours, minutes or seconds. The
input value must not exceed the maximum period of 99 days, nor
be less than 1 second. When the selected time has accumulated,
the gating period ends. This key is blank whenever MANUAL
gating is selected.
Configures the error detector to perform SINGLE and
REPETITIVE gating periods that are controlled by the
accumulation of bit errors. The range of bit errors over which
gating can occur is 10, 100 and 1000. When the selected number
of bit errors have been accumulated, the gating period ends. This
key is blank whenever MANUAL gating is selected.
Configures the error detector to perform SINGLE and
REPETITIVE gating periods that are controlled by the
accumulation of clock bits. The choice of number of bits over
which gating occurs is 1E7 through 1E15 in decade steps. When
the selected number of clock periods have been accumulated, the
gating period ends. This key is blank whenever MANUAL
gating is selected.
The user may elect to gate BY TIME, BY ERRORS,orBY
BITS, selectable using the appropriate softkey.
Note: if MANUAL gating is selected only gating BY TIME is
available.
Burst gating is only enabled when a MANUAL gating mode,
and a PRBS pattern of 2^31−1, 2^23−1, 2^15−1, 2^10−1or
2^7−1 is selected. In Burst gating mode gating the Error
Detector's bit and error counters are only enabled while the
GATING INPUT is high.
Refer to the Burst Gating section in Chapter 4 for a detailed
description of this operating mode and its application.
Configures the error detector to display the results from the
previous complete gating period or the results currently being
accumulated. This selection is effective in REPEAT mode only.
GATE BY TIME
GATE BY ERRS
GATE BY BITS
GATING PERIOD
BURST GATING
REPORT PREVCUR