Locating Signals
Description. There are two less-frequent anomalies in this pulse train that can show up with DPO on DPO3000, MSO3000,
DPO4000, and MSO4000 instruments.
A half-height runt signal occurs app roximately every 838.8 ms. Use a Runt trigger to isolate the signal.
A 50 ns (narrow) pulse appears in approximately 838.8 ms. Use a Pulse Width trigger to isolate the signal.
The pulse train is a repeating group of three pu lses. The three pulses are 100 n s, 200 ns, and 100 ns wide, with a 100 ns
low between each pulse. The group repeats at a 1.6 μs rate.
The anomaly is a group of four pulses. The four pulses are 100 ns, 50 ns (narrow), 100 ns (runt), and 100 ns wide, with a 100 ns
low between each pulse, except for a 50 n s low before the runt.
40 MHz
Board label. 40_MHZ
Connector g rid location. A4
Description. This is a 40 MHz square wave signal.
AM Modulation
Board label. AM_MOD
Connector g rid location. I5
Description. This is a 1.25 MHz carrier amplitude signal modulated by a 1.25 kHz sine wave signal.
124 Demo 2 Board Instruction Manual
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