Pulse Accuracy Performance Test

This test applies to the following models:

This test measures the accuracy of the pulse width in comparison to the nominal value.

The UUT is first set to CW mode and its RF Output amplitude is measured on an oscilloscope to set the reference amplitude. The UUT is then pulse modulated using its internal pulse generator and the built-in oscilloscope width measurement is used to measure the pulse width which is defined as the time difference between the midpoint (50%) of the rising edge and the midpoint of the falling edge. The difference in widths between the nominal value and the pulsed RF output is the pulse accuracy.

Click here for troubleshooting help.

Required Test Equipment

Test Equipment

Recommended Models1

High performance oscilloscope

DSOV334A2

100 MHz reference

M9300A

Cable to connect the oscilloscope to Trig 1 or Trig 2 of the M9312A source output

8121-2626 coaxial 50 Ω cable assembly, 1200 mm-LG, BNC (m) to SMP (f)

OR

8121-2627 coaxial 50 Ω cable assembly, 210 mm-LG, SMP (f) to SMP (f)

AND

1250-1237 BNC (f) to SMB (m) adapter and BNC (m) to BNC (m) cable
  1. Refer to the main Required Equipment table for a list of alternative models.
  2. Can only be connected via LAN. Refer to the Connecting LAN Test Instruments section of the Getting Started topic.

Connections and Setup Procedures

  • Depending on options, one of the setups below will be used: either Trig 1 or Trig 2 to channel two of the oscilloscope.

  • Depending on the DUT configuration, the Trig port may already be connected to another module. In this case, it will be necessary to temporarily disconnect that connection to make the connection to the oscilloscope for this test. Be sure to re-connect the Trig to its original state after the test is complete. Refer to the M9383A Startup Guide for default cabling instructions.

Setup using Trig 1 of the M9312A source output

Setup using Trig 2 of the M9312A source output