E2667B Datasheet, PDF (5/10 Pages) Keysight Technologies – USB 2.0 Signal Quality Test Option

05 | Keysight | DSOX4USBSQ and DSOX6USBSQ USB 2.0 Signal Quality Test Option for 4000 and 6000 X-Series - Data Sheet
USB 2.0 Test Fixtures
For testing “live traffic” (non-compliance
testing) using recommended probing, test
fixtures are not required.
For testing low- and full-speed products
based on USB-IF compliance standards
(pre-compliance signal quality testing),
Keysight recommends using the E2646B
“SQuIDD” test fixture shown in Figure 4.
This test fixture provides easy-access
probing test points for Keysight’s N2800
Series 10:1 passive probes.
For testing a USB 2.0 hi-speed device
based on USB-IF compliance standards
(pre-compliance signal quality testing),
Keysight recommends using the E2666B
test fixture kit shown in Figure 5. Testing
hi-speed devices using a programmed test
pattern only requires that you connect
the D+ and D- signals to the scope’s input
channels using SMA cabling along with
the appropriate SMA-to-BNC adapters.
For testing USB 2.0 hi-speed hosts
based on USB-IF compliance standards
(pre-compliance signal quality testing),
Keysight recommends using the E2667B
test fixture kit shown in Figure 6. Testing
hi-speed hosts using a programmed test
pattern only requires that you connect
the D+ and D- signals to the scope’s input
channels using SMA cabling along with
the appropriate SMA-to-BNC adapters.
Figure 4. E2646B “SQuIDD” test fixture for
testing USB 2.0 low- and full-speed products.
Figure 5. E2666B hi-speed device test fixture.
Figure 6. E2667B hi-speed host test fixture.
Related Products
If you need to perform complete USB
2.0 pre-compliance testing (beyond the
series of signal quality tests provided
by the DSOX4USBSQ option running
on a Keysight InfiniiVision 4000 or
6000 X-Series oscilloscope), Keysight
recommends a Windows-based Infiniium
Series oscilloscope with the N5416A USB
2.0 compliance test software shown in
Figure 7.
To learn more about USB 2.0 serial bus
testing and to better understand the
differences between the InfiniiVision
X-Series Signal Quality Test option versus
Infiniium’s USB 2.0 full compliance test
option (N5416A), refer to the application
note titled, “Physical Layer Testing of the
USB 2.0 Serial Bus” listed at the end of
this document.
Figure 7.