YOKOGAWA DL1720E, Руководство по обслуживанию

Страница: 28 / 73

2-11
SM 701730-01E
Performance Testing
2
2.2.15 EXT Trigger Sensitivity and Trigger Out Test
Specification: Sensitivity 100 mV at 100 MHz
Testing Procedure
1. Enter the following settings on the DL1720E/DL1740E/DL1740EL.
CH1
Display: ON
V/div: 20 mV/div
Probe: 1:1
Coupling: DC 50 Ω
CH2 Display: ON
V/div: 2 V/div
Probe: 1:1
Coupling: DC 1 M Ω
Other than CH1 or CH2 Display: OFF
DISPLAY Format: Dual
ACQ Record Length: 10 k
Mode: Normal
TIME/DIV 10 ns/div
SIMPLE (Trigger) Source: Ext
Range: ± 1 V (for the DL1720E)
Probe: 1:1
Level: V
c
(see prev item)
Position: 10%
2. Input a 100 MHz, 100 mV
P-P
sinewave from the calibrator to CH1 and the EXT
trigger input terminal. Pass the input to the EXT trigger input terminal through
the 50
Ω
terminator.
3. Connect the rear panel trigger output to CH2 through a BNC cable.
Items to Be Checked
Confirm that the trigger activates normally, and that a stable waveform is displayed.
Observation Example
2.2 Tests for the DL1720E/DL1740E/DL1740EL