TB 9-6625-2124-24
(25) Press function keys and enter corresponding data on keyboard as listed in as
listed in (a) through (e) below:
INSTR PRESET key.
(a)
START key, DATA ENTRY 10 MHz.
(b)
STOP key, DATA ENTRY 8.4 GHz.
(c)
POWER LEVEL. key, DATA ENTRY 10 dBm.
(d)
RF BLANK (ON) key.
(e)
(26) Set oscilloscope for an X verses Y function operation and adjust controls as
necessary to display the TI output.
(27) Adjust A5R48 (fig. 3) for best overall trace flatness as displayed on oscilloscope (R).
(28) Adjust BP (breakpoint) and SL (slope) adjustments, listed in table 4, for best
overall trace flatness as displayed on oscilloscope.
Table 4 . BP and SL Adjustments
SL adjustment
BP adjustment
(fig. 3) (R)
(fig. 3) (R)
A5R34
A5R41
A5R36
A5R42
A5R38
A5R43
A5R40
A5R44
NOTE
The BP adjustment determines at what frequency the
corresponding SL adjustment takes effect.
(29) Press POWER LEVEL key and enter data -2 dBm on keyboard.
(30) Adjust A4R11 (fig. 3) until ALC oscillations appear on oscilloscope trace as
shown in figure 5.
(31) Observe TI output on oscilloscope display and readjust A4R11 to remove
all ALC oscillations.
16. AM ON/OFF Ratio and Square Wave Symmetry
a. Performance Check
(1) Connect spectrum analyzer to RF OUTPUT, using 10 dB attenuator.
(2) Press function keys and enter corresponding data on keyboard as listed in as
listed in (a) through (d) below:
(a) INSTR PRESET key.
(b) CW key, DATA ENTRY 1 GHz.
(c) POWER LEVEL key, DATA ENTRY +13 dBm.
MOD(ON).
(d)
(3) Adjust spectrum analyzer controls as necessary to display the TI output signal.