User Manual

Performance Ver
ification
Rise Time
This procedure verifies that the probe meets the warranted rise time specification of the 4.25 V range (÷ 5). Two rise times
are measured; the test system alone, and then the test system with the probe included. The probe rise time is calculated
using the two measurements.
This test uses the 80E04 as a fast rise time signal source. The second channel of the 80E04 sampling head is used to take
the measurements. Although the following procedure assigns the TDR and measurement functions to specific osc illoscope
channels, any channels c an be used. However, the TDR function is only available on 80E04 sampling heads.
CAUTION. To prevent damage to the SMA connectors, use care when working with SMA connectors: support equipment to
avoid mechanical strain on the connectors, and when tightening connections, use a torque wrench to 7.5 in-lbs.
Test System Rise Time
1. Connect the 80E04 sampling head to Channel 1 of the sampling oscilloscope.
2. Connect SMA cables to Channels 1 and 2 on the sampling head.
3. Connect the SMA cable from C hannel 1 to the probe input BNC connector on the 1103 power s upply using an SMA-BNC
adapter.
4. Connect the SMA cabl
e from Channel 2 to an SMA-to-BNC Adapter, and then to the output BNC connector on the
1103 power supply.
5. Turn on Channel 2 and set the vertical scale to 50 mV/div.
28 P6250 & P6251 Technical Reference