Axel WOLF 1MS, Руководство пользователя, Страница: 156 / 229

TECHNICAL APPENDIX
| TECHNICAL APPENDIX 156
Tested in scanning mode with another carrier with a constant RF at 70dBuV to alternate the conditions.
F1=100.80MHZ ( sweeping from 120dBuV to 100dBuV)
F2=100.50 MHZ (70dBuV stable)
Thr: +110dBuV, Hyst: +3dBuV, Validation:2sec, Hold:2Sec
Thr: +110dBuV, Hyst: +3dBuV, Validation:20sec, Hold:10Sec
Thr: +110dBuV, Hyst: +3dBuV, Validation:180sec, Hold:60Sec
The behavior observed has been compatible with the specification with an accuracy error on the measure of about 2
dBuV and timing errors of about 1-2 seconds
The traps will be sent if the instant the alarm rises up, but the RF value and the time in the var-binds will be related to the
first sample out of the range.
Under the alarm condition the RF alarm led on the panel must be on (flashing if the alarms are more than one on the
channel list) and clicking on the channel number of the correspondent tuner the RF error will be displayed.
In case of more errors on the related channel, they will rotate for about 30 seconds in a sequence carousel.
In SmartScan Mode the behavior expected is the same of the normal Scanning mode because this parameter is
continuous and always available on the channel.
REPLAY ENABLED TRAPS
The RF-H2 alarm trap is replayed with its original status, time and RF value. Trap Counter is normally incremented.
All data and parameters are available in the MIB L3-5 to set and test this configuration.
PLANNED IMPROVEMENTS
Sample of the RF Carrier Offset after its stabilization in the channel change transient (already improved for the 0.6.3
release).
Add in the panel display even the out of range RF value in the list error sequence after the
alarm label “RF_LEV_H2”
NOTES
over 80dBuV the internal full band automatic attenuator starts to attenuate with a control hysteresis of 2 dBuV. This
causes two effects : 1) less measurement accuracy (as specified) and less sensitivity for lower carrier on other
frequencies