User`s guide

Key Reference 5
N9340B User’s Guide 123
The mak types for IBOC- FM are listed as below:
• FCC (FM- 73.317)
• NRSC- 5- B Hybrid
• NRSC- 5- B Hybrid
Figure 5-31 IBOC (FM) spectral emission mask and limits
-600 -400 -2 00 0 200 40 0 600
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
Offset from c arrier frequency (kHz)
Level relative to unmodulated carrier(dBc)
IBOC (FM) spec tral emi ssion mask and li mit s
Trac e i n red is FCC spectral emissions mask.
Trac e i n blue is NRSC hybrid spectral emissions limits.
Trace in Black is NRSC all digital spectral emissions limits.
•Mask On/Off
Mask On/Off is a switch to enable the mask
function.
• Set Span and RBW according to mask
standard automatically.
• Set Average Type to Power and Detector to
Average (RMS), and also set average on with
average times to meet the measurement
specification.
• Pass/Fail
Pass/Fail On/Off is a switch to enable/disable
PASS/FAIL verification.