JBL AUTHENTICS L8 (serv.man4) EMC - CB Certificate ▷ View online
Report No.: EM201300471-1 Application No.:
ZJ00032008 Page 37 of 57
4.4 HOPPING CHANNEL SEPARATION
4.4.1 LIMITS
EN300 328 clause 4.3.4.2
≥1MHz
4.4.2 TEST PROCEDURE
Remove the antenna from the EUT and then connect a low attenuation cable from the antenna port to the
spectrum.
Set the spectrum analyzer: RBW >= 1% of the span (set 100 kHz). VBW >= RBW , Span = enough to catch
the trace. Sweep = auto; Detector Function = Peak. Trace = Max,hold.
Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the
adjacent channels. The limit is specified in one of the subparagraphs of this Section. Submit this plot
Pre-test the 3 modulation to find GFSK and 8DPSK is worse case, so only record GFSK and 8DPSK test data.
spectrum.
Set the spectrum analyzer: RBW >= 1% of the span (set 100 kHz). VBW >= RBW , Span = enough to catch
the trace. Sweep = auto; Detector Function = Peak. Trace = Max,hold.
Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the
adjacent channels. The limit is specified in one of the subparagraphs of this Section. Submit this plot
Pre-test the 3 modulation to find GFSK and 8DPSK is worse case, so only record GFSK and 8DPSK test data.
4.4.3 TEST SETUP
4.4.4 TEST RESULTS
Mode Test
Channel
Carrier Frequencies
Separated
Limit Results
GFSK
Lower Channels
(channel 0 and channel 1)
1.002MHz
≥1MHz Pass
Middle Channels
(channel 39 and channel 40)
1.002MHz
≥1MHz Pass
Upper Channels
(channel 77 and channel 78)
1.008MHz
≥1MHz Pass
8DPSK
Lower Channels
(channel 0 and channel 1)
1.002MHz
≥1MHz Pass
Middle Channels
(channel 39 and channel 40)
1.002MHz
≥1MHz Pass
Upper Channels
(channel 77 and channel 78)
1.008MHz
≥1MHz Pass
Result plot as follows:
Antenna
EUT
Attenuator
Receiver
Report No.: EM201300471-1 Application No.:
ZJ00032008 Page 38 of 57
For GFSK
Lowest Channels:
Middle Channels:
Highest Channels:
Report No.: EM201300471-1 Application No.:
ZJ00032008 Page 39 of 57
For 8DPSK
Lowest Channels:
Report No.: EM201300471-1 Application No.:
ZJ00032008 Page 40 of 57
Middle Channels:
Highest Channels:
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