Schematics

Report No.: BCTC2104274903E
No.：BCTC/RF-EMC-007 Page: 49 of 69 Edition：A.3
12. HOPPING CHANNEL SEPARATION
12.1 Block Diagram Of Test Setup
12.2 Limit
Frequency hopping systems shall have hopping channel carrier frequencies separated
by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is
greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz
band may have hopping channel carrier frequencies that are separated by 25 kHz or
two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided
the systems operate with an output power no greater than 0.125W.
12.3 Test procedure
1. Remove the antenna from the EUT and then connect a low RF cable from the antenna
port
to the spectrum.
2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep =
auto; Detector Function = Peak. Trace = Max hold.
3. 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.