TB 9-6625-2137-24
(3) Repeat (2) above to the first frequency below 1 MHz.
Subtract frequency
reading. The difference will be equal to or less than -1100 Hz.
(4) Repeat (1) above for 20 Hz bandwidth.
(5) Repeat (2) and (3) above for an indication of -30 dBmO. Subtract frequency
readings above and below 1 MHz. The difference will be equal to or less than 45 Hz.
(6) Repeat (5) above for an indication of -60 dBmO. The difference will be equal to
or less than 90 Hz.
b. Adjustments. No further adjustments can be made.
16. Carrier Frequency and Adjacent Channel Rejection
a. Performance Check
(1) Connect synthesizer/level generator 75
OUTPUT to TI TERMINATION
input, using cable No. 2. Adjust frequency of synthesizer/level generator for 1 MHz
75
and amplitude for 0 dBm output.
(2) Press TI ENTRY [FREQ] [1] and [MHz-dB] pushbuttons.
) MEASUREMENT/ ENTRY
(3) Press TI [RECALL], [0] TERMINATION (75
[OFFSET], and ENTRY [RDNG OFFSET] pushbuttons.
(5) Set synthesizer/level generator INCR pushbutton one step above 1 MHz. The TI
dBmO level indication will be less than -60 dBmO.
(6) Repeat (5) above for one step below 1 MHz. The TI dBmO level indication will
be less than -60 dBmO.
(7) Set synthesizer/level generator for 1 MHz and repeat (4) through (6) above for
an INCR frequency of 2850 Hz. The TI dBmO level indication will be less than -75 dBmO.
b. Adjustments. No further adjustments can be made.
17. Wideband Power Flatness
a. Performance Check
(1) Connect equipment as shown in figure 5.
(2) Press TI ENTRY [RECALL], [0], MEASUREMENT MODE [WIDE BAND],
MEASUREMENT/ENTRY [AVE], and TERMINATION [75 ] pushbuttons.
(3) Set function/arbitrary generator for 20 kHz and amplitude for +8.7 dBm.
(4) Set synthesizer/level generator for 30 kHz and amplitude for +8.7 dBm.
(5) Press TI ENTRY
[RDNG
OFFSET]
MEASUREMENT/ENTRY
and
[OFFSET] pushbuttons.
(6) Set synthesizer/level generator to 10 MHz. TI will indicate between 0.8 dBmO.