Tektronix RSA3300A, Service Manual

Page: 141 / 284

Adjustment Procedures
RSA3303A & RSA3308A Service Manual
5- 31
Reconfiguration of RF Modules
The following procedures update the down-converter configuration file when
replacing the RF3 module and/or YTF unit. The procedure for the YTF unit is
for the RSA3308A analyzer only.
STOP
. Before doing the following procedures, note the gain and offset values
which are indicated on the front surface of the module.
When replacing the RF3 module, do the following procedure.
Equipment
Required
One signal generator (Item 1)
One 50
Ω
N-N coaxial cable (Item 9)
1. Modify the RF3 DAC setting:
a. Press the CAL key on the front panel.
b. Press the side key Service... > Password .
c. Enter 270833 and then press ENTER using the numeric keypad.
d. Press the side key DEBUG > YTO Tune DAC...
e. Press the Gain side key and input the gain of the RF3 module.
f.
Press the
Offset
side key and input the offset of the RF3 module.
2.
Prepare for the adjustment:
a.
Set the signal generator controls:
Frequency 1500 MHz . . . . . . . . . . . . . . . .
Amplitude --10 dBm . . . . . . . . . . . . . . . .
RF Output On . . . . . . . . . . . . . . . .
b. Hook up the signal generator: Connect the generator output through a
50
Ω
N-N coaxial cable to the analyzer INPUT . See Figure 5--14.
Reconfiguration of the
RF3 Module