
Service Manual
Pass/Fail Test
Purpose: Test if the Pass/Fail interface works normally through the signal from the back BNC of
the oscilloscope.
Tools:
● An Unit SDS1000D digital oscilloscope , another digital oscilloscope
● A BNC cable
● A Probe
Steps:
1. Power-On two oscilloscopes.
2. Connect the Pass/Fail interface of SDS1000D with the channel BNC of another oscilloscope
using the BNC cable.
3. Connect the probe to channel 1 on SDS1000D, and press AUTO button.
4. Press “UTILITY” button page3/4 Pass/Fail, set the function item as below:
Table 3-1 Pass/Fail function item
Option Setting
Enable Test On
Source CH1
Msg Display On
Output Pass
Stop On Output Off
5. Click “Mask Setting” Create Mask, and back to Page1/2, then press “Operate” button.
6. Adjust the time base and volt of another scope, if there is a pulse wave as below appeared on the
screen, which show the interface works normally, if no response or another wave on the
screen, errors might happen to the interface.
Picture 3-8 Pass/Fail interface works normally
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