6.
ADJUSTMENT
6-1
6.
ADJUSTMENT
6.1
Frequency Reference Adjustment (R3755A/R3755TF with OPT20)
Testing procedure
1.
Setup the R3755x as shown in the figure below.
To counter input
Figure 6-1 Frequency Reference Adjustment (R3755A/R3755TF with OPT20)
2.
Set the R3755x as follows.
Center frequency
: 10 MHz
Span
: 0 MHz
Sweep mode
: SINGLE
Output level
: 0 dBm
3.
Adjust the STD ADJ volume so that the counter-read frequency is within the fol-
lowing range:
Adjustment range:
9. 999 992 to 10.000 008 (<
±
0.8 ppm)
R3755A/R3755TF
STD ADJ
volume