3-8
IM 704610-01E
3.5
Connecting Cables and a Probe
Location of the Measurement Input Terminal
The signal input terminal is located at the lower right section of the front panel. Connect
a cable or a probe with a BNC connector. You can select an input impedance for the
instrument’s measurement input terminal of 1 M
Ω
or 50
Ω
(see section 4.2). Therefore
you should choose a cable or probe that matches the impedance setting you entered.
RF
5V RMS
Signal Input Terminal Specifications
Item
Description
Connector type
BNC
Number of channels
1 (RF input)
Input impedance
Select 1 M
Ω
// 20 pF (typical value*), or 50
Ω
.
Maximum input voltage
5 Vrms
Ground
Connect to the case ground
*
The typical value is a representative or standard value. It is not strictly guaranteed.
CAUTION
Do not apply a voltage that exceeds the maximum input voltage to the input
terminal. Doing so can cause damage to the input section.
Note
When connecting the probe for the first time, perform phase correction of the probe according
to the description given in section 3.6. Failure to do so will cause unstable gain across
different frequencies, thereby preventing correct measurement. Phase correction of the probe
must be performed if either the probe or the TA220 is altered.