Analog Devices Linear Technology DC2328A, Demo Manual

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dc2328af
DEMO MANUAL DC2328A
AMPLITUDE (dBµV/m)
50
60
70
40
30
20
10
–10
0
FREQUENCY (MHz)
30 830
130 230 330
430 530
630 730
930 1000
DC2328 F11
[1] HORIZONTAL
[2] VERTICAL
QPK LIMIT
FORMAL
MEAS DIST 10m
SPEC DIST 10m
+
AMPLITUDE (dBµV/m)
50
60
70
40
30
20
10
–10
0
FREQUENCY (MHz)
30 830 130 230 330 430 530 630 730 930 1000
DC2328 F12
[1] HORIZONTAL
[2] VERTICAL
QPK LIMIT
FORMAL
MEAS DIST 10m
SPEC DIST 10m
+
AMPLITUDE (dBµV/m)
50
60
70
40
30
20
10
–10
0
FREQUENCY (MHz)
30 830 130 230 330 430 530 630 730 930 1000
DC2389 F13
[1] HORIZONTAL
[2] VERTICAL
QPK LIMIT
FORMAL
MEAS DIST 10m
SPEC DIST 10m
+
Figure 11. Radiated Emissions Scan of the LTM4651. Producing –24V
OUT
at 1A, from 12V
IN
.
DC2328A Hardware. f
SW
= 1.2MHz. Measured in a 10m Chamber. Peak Detect Method
Figure 12. Radiated Emissions Scan of the LTM4651 Producing –24V
OUT
at 2A, from 25V
IN
.
DC2328 Hardware. f
SW
= 1.2MHz. Measured in a 10m Chamber. Peak Detect Method
Figure 13. Radiated Emissions Scan of the LTM4651. Producing –24V at 2A, from 34V.
DC2328A Hardware. f
SW
= 1.2MHz. Measured in a 10m Chamber. Peak Detect Method