HP (Hewlett-Packard) HP 8568B TV Converter Box User Manual


 
1. Center Frequency Readout Accuracy Test
Equipment
Synthesized Sweeper . . . . . . . . . HP
8340A
Frequency Standard . 10 MHz standard,
accy
within
+
1 part in
lOlo,
e.g. HP
5061A
Adapter, Type N (m) to SMA (f) . . . HP1250-1250
61 cm (24 in.) Cable Assembly, SMA Male Connectors HP 5061-1086
Procedure 1.
2.
3.
4.
5.
6.
7.
8.
Connect CAL OUTPUT to SIGNAL INPUT 2.
Press
[INSTR
PRESET),
@
on the analyzer.
Adjust FREQ ZERO for a maximum amplitude trace.
Press
(1tds-r~
PRESET).
Set the synthesized sweeper for a 100.000 MHz signal at a level of
approximately 0
dBm.
Connect equipment as shown in Figure
2-l.
Set analyzer
~CENTER
FREQUENCY) and [FREQUENCY SPAN) and
synthesized sweeper frequency according to Table 2-2. At each
setting, press
[PEAK
SEARCH).~~)
to center the signal. Adjust
CREFERENCE
LEVEL) as necessary to place signal peak at a convenient
level.
Record the CENTER readout frequency in the table for each
setting. The limits for this frequency are given in the table. See
Figure 2-2.
Figure 2-2. Center Frequency Readout Error Measurement
2-4 Performance Tests