Specifications

ETSI
Final draft ETSI EN 300 328 V1.8.1 (2012
-
04)
54
Step 1:
• Connect the UUT to the spectrum analyser and use the following settings:
- Centre Frequency: 2 484 MHz
- Span: 0 Hz
- Resolution BW: 1 MHz
- Filter mode: Channel filter
- Video BW: 3 MHz
- Detector Mode: RMS
- Trace Mode: Clear / Write
- Sweep Mode: Continuous
- Sweep Points: 5 000
- Trigger Mode: Video trigger
NOTE 1: In case video triggering is not possible, an external trigger source may be used.
- Sweep Time: Suitable to capture one transmission burst
Step 2: (segment 2 483,5 MHz to 2 483,5 MHz + BW)
• Adjust the trigger level to select the transmissions with the highest power level.
• For frequency hopping equipment operating in a normal hopping mode, the different hops will result in signal
bursts with different power levels. In this case the burst with the highest power level shall be selected.
• Set a window (start and stop lines) to match with the start and end of the burst and in which the RMS power
shall be measured using the Time Domain Power function.
• Select RMS power to be measured within the selected window and note the result which is the RMS power
within this 1 MHz segment (2 483,5 MHz to 2 484,5 MHz). Compare this value with the applicable limit
provided by the mask.
• Increase the centre frequency in steps of 1 MHz and repeat this measurement for every 1 MHz segment within
the range 2 483,5 MHz to 2 483,5 MHz + BW. The centre frequency of the last 1 MHz segment shall be set to
2 483,5 MHz + BW - 0,5 MHz (which means this may partly overlap with the previous 1 MHz segment).
Step 3: (segment 2 483,5 MHz + BW to 2 483,5 MHz + 2BW)
• Change the centre frequency of the analyser to 2 484 MHz + BW and perform the measurement for the first
1 MHz segment within range 2 483,5 MHz + BW to 2 483,5 MHz + 2BW. Increase the centre frequency in
1 MHz steps and repeat the measurements to cover this whole range. The centre frequency of the last 1 MHz
segment shall be set to 2 483,5 MHz + 2 BW - 0,5 MHz.
Step 4: (segment 2 400 MHz - BW to 2 400 MHz)
• Change the centre frequency of the analyser to 2 399,5 MHz and perform the measurement for the first 1 MHz
segment within range 2 400 MHz - BW to 2 400 MHz Reduce the centre frequency in 1 MHz steps and repeat
the measurements to cover this whole range. The centre frequency of the last 1 MHz segment shall be set to
2 400 MHz - 2BW + 0,5 MHz.
Step 5: (segment 2 400 MHz - 2BW to 2 400 MHz - BW)
• Change the centre frequency of the analyser to 2 399,5 MHz - BW and perform the measurement for the first
1 MHz segment within range 2 400 MHz - 2BW to 2 400 MHz - BW. Reduce the centre frequency in 1 MHz
steps and repeat the measurements to cover this whole range. The centre frequency of the last 1 MHz segment
shall be set to 2 400 MHz - 2BW + 0,5 MHz.