Contec VNA-300M-PCI, Руководство пользователя, Страница: 32 / 55

3. External Connection
VNA-300M-PCI
25
Connecting to the Device under Test
Transmission Measurement
This section provides an example of connecting to a device under test (DUT) such as a passive part or
circuit that has an I/O impedance of 50Ω.
O
U
T
IN
T
R
G
E
X
T
R
E
F
DUT
IN OUT
Figure 3.3. Connection to the DUT (Passive Part or Circuit)
CAUTION
-
If you will connect directly to the device under test (DUT), set the pi-circuit setting to OFF. Failing to do so may
prevent normal measurements from being performed. Use Device Manager to set the pi-circuit setting to ON or
OFF.
- Accurate measurements may not be possible if this product and the device under test (DUT) are affected by noise
or if there is a large distance between this product and the device under test (DUT).
- The output from the OUT terminal is uncertain immediately after the computer starts (for a few seconds after the
power turns on).