EPSILON CLOCK MODEL EC20S Spectracom
User’s Manual 70
first time, the output 1PPS signals are always distributed
whatever their quality is.
73. MUTE MODE FOR 10MHZ
The mute mode for the output 1PPS signals:
- Disabled Output 10MHz signals are always distributed whatever their
quality is.
- Automatic Output 10MHz signals are muted upon SFN conditions when
SFN Status is ‘Off’ (see 10.2).
- On Time Output 10MHz signals are muted upon time conditions (see
13.7.5).
- Until Stable Output 10MHz signals are muted until they are stable (i.e. after
their frequency have been adjusted a first time).
- Until 1
st
Sync Output 10MHz signals are muted until the EC20S meets the SFN
conditions. Once the EC20S have met the SFN conditions for the
first time, the output 10MHz signals are always distributed
whatever their quality is.
13.7.5 DISTRIBUTION STATUS FOR “ON TIME” MUTE MO DE
When this mute mode is selected (see 13.7.4), the 3 conditions defined below (74, 75 and 76) are
evaluated all together to determine whether the output synchronization signals (1PPS, 10MHz) are
distributed or not. Setting the special value ‘0’ to a mute mode inhibits this mode.
74. MUTE AFTER LOSS OF SYNC SOURCES
This delay starts upon the loss of all the synchronization sources. The distributed
synchronization signals (1PPS, 10MHz) are muted once this delay has elapsed. Unity:
second.
75. ENABLE AFTER STARTUP
This delay starts upon the start-up of the EC20S. The synchronization signals (1PPS, 10MHz)
are muted during this delay and are distributed once this delay has elapsed. Unity: second.
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