3-8
IM 704510-01E
3.5
Connecting Cables and Probes
Location of Signal Input Terminals
The input terminals are located at the lower section of the front panel. Connect a cable
with a BNC connector or a probe.
POWER
ESC
CH
A
CH
sec/V/
MHz
LOCAL
INITIALIZE
FILE
COPY MENU
SHIFT
EXT ARM/EXT GATE
INHIBIT
50
1M
40Vpk
1M
40Vpk
5Vrms
B
MODE
ENTER
0
1
2
3
m
4
5
6
7
8
9
n
SINGLE
START/STOP
COPY
AUTO
SCALE
FUNCTION
INPUT
MARKER UTILITY
SAMPLE
DISPLAY
SCALE
RE
SET
SELSC
T
Signal input terminal
Specifications of the Signal Input Section
Connector type:
BNC
Number of channels: 2
Input impedance:
50
Ω
or 1 M
Ω
, 23 pF (typical value*)
Maximum input voltage
• For input impedance of 50
Ω
: 5 Vrms
• For input impedance of 1 M
Ω
:
40 V (DC+ACpeak) for DC
≤
input frequency
≤
100 kHz
{3.5/f+5} V (DC+ACpeak) for 100 kHz
≤
input frequency
≤
200 MHz, where f is the
frequency in MHz
Ground: Connect to the case ground
*
Typical values represent typical or average values. It is not strictly warranted.
CAUTION
Do not apply a voltage exceeding the maximum input voltage to the input
terminal of the TA720. This may cause damage to the input section.
Note
When connecting a probe to the TA720 for the first time, perform phase correction of the
probe as described in section 3.6, “Calibrating the Probe (Phase Correction).” Failure to do
so will cause unstable gain across different frequencies, thereby preventing correct
measurement. Phase correction of the probe must be performed on each channel.
