HP 8591C, Руководство пользователя, Страница: 80 / 373

Channel Measurements
Making Channel Measurements
NOTE
Option 107 is required for the differential gain/differential phase test.
2. The test signal is found automatically (if a test signal exists). The search
starts at the default line number (line 18). If a test signal is not found,
the search routine will stop at the first NTC 7 or FCC composite test
signal it finds while counting down from line 22 to line 10. Figure 2-23
shows the FCC composite test signal; Figure 2-24 shows the NTC 7
composite signal.
Differential 1. Select a channel, then press Main 1 of 3 Main 2 of 3
gain/differential phase
DIF GAIN DIF PHAZ.
test
2 2 . 5 9 N O ” 2 3 .
3 9 2 0 0
REF 142 6 AT 10 8 4 . 2 4 2
S E L E C T
L I N E
A U T O S I G
SEARCH
C O N T I N U E
C E N T E R 6 7 2 4 9 S P A N 0 H
Z
3 0 0 3 MHZ
Figure 2-23. FCC Composite Test Signal
2-37