Agilent Technologies 42A ユーザーズマニュアル
3- 9
Triggering the Oscilloscope
External Trigger Input
External Trigger Input
External Trigger can be used as a source in several of the trigger types. On
4-channel and mixed-signal oscilloscopes, the external trigger BNC input is on
the rear panel and is labeled
4-channel and mixed-signal oscilloscopes, the external trigger BNC input is on
the rear panel and is labeled
Ext Trig. On 2-channel oscilloscopes, the external
trigger BNC input is on the front panel and is labeled
Ext Trigger.
Maximum input voltage for the external trigger input:
CAT I 300 Vrms, 400 Vpk
CAT II 100 Vrms, 400 Vpk
with 10073C or 10074C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk
CAT II 100 Vrms, 400 Vpk
with 10073C or 10074C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk
C A U T I O N
Do not exceed 5 Vrms in 50
Ω
mode on the 54640-series models. Input
protection is enabled in 50
Ω
mode and the 50
Ω
load will disconnect if greater
than 5 Vrms is detected. However the input could still be damaged, depending
on the time constant of the signal.
on the time constant of the signal.
C A U T I O N
The 50
Ω
input protection mode on the 54640-series models only functions
when the oscilloscope is powered on.
External Trigger Probe Settings
You can set probe attenuation, units, and input impedance for the external
trigger input.
trigger input.
1 Press the
Mode/Coupling
key in the Trigger section of the front panel.