TB 9-6625-2340-24
(40) Adjust TI DATA knob to set marker to the 3 dB point on the negative going
side of the displayed signal. There are now two markers; one on each side of the signal at
the 3 dB points.
indication should be 3.0 0.30 kHz.
(41) TI MKR
(42) Press TI 2-22 GHz key.
(43) Replace TI top cover.
13. Bandwidth Switching
a. Performance Check
(1) Press TI 2-22 GHz key.
(2) Connect TI CAL OUTPUT to TI RF INPUT.
(3) Press TI keys as listed in (a) through (f) below:
CENTER FREQUENCY, 100, MHz.
(a)
FREQUENCY SPAN, 5, MHz.
(b)
REFERENCE LEVEL, 8, dBm.
(c)
RES BW, 1, MHz.
(d)
LOG ENTER dB / DIV, 1, dB.
(e)
MARKER PEAK SEARCH, .
(f)
(4) Press TI MARKER PEAK SEARCH key.
(5) Read the amplitude deviation from the marker
indication. If indication
displayed is not within limits specified in first row of table 9, perform b below.
(6) Repeat technique of (3) (b), (d), (4) and (5) above for remaining TI RES BW and
FREQUENCY SPAN key settings in table 9. If indications displayed are not within limits
specified in table 9, perform b below.
Table 9. Bandwidth Switching Accuracy
Test instrument
Deviation
RES BW
FREQUENCY
(dB)
SPAN
key
key
Min
Max
1 MHz
5 MHz
0 (ref)
0 (ref)
1.00
3 MHz
5 MHz
1.00
0.50
300 kHz
5 MHz
0.50
0.50
100 kHz
500 kHz
0.50
0.50
30 kHz
500 kHz
0.50
0.50
10 kHz
50 kHz
0.50
0.50
3 kHz
50 kHz
0.50
0.50
1 kHz
10 kHz
0.50
0.50
300 Hz
1 kHz
0.50
0.50
100 Hz
1 kHz
0.50
0.80
30
Hz
200 Hz
0.80
2.00
10
Hz
100 Hz
2.00
b. Adjustments
(1) Set TI LINE switch to STANDBY.
(2) Remove TI top cover.