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Appendix
R&S
®
TS-PCA3
84
User Manual 1152.3908.12 ─ 19
Annex
A
Appendix
A.1
R&S TS-PCA3 Backplane Versions
A.1.1
Effects of the R&S TS-PCA3 backplane redesign
V1.x
Basic version; has some local bus connections, bussed 10-MHz clock.
V2.x
Improved 10-MHz clocking (single driver), local bus connections isolated;
R&S TS-PSC0 can be used.
V2.1
±
12-V pins and some 5-V pins on front of X20 isolated because of incom-
patibility with some third-party modules.
V3.1
Improved EMC. clocking, PSC4 undertone eliminated, ±12-V pins and some
5-V pins on the front of X20 eliminated as for V2.1; backplane has serial
number;
serial No. TS-PCA3 100063 and 100077 to 100108
V4.0
Full compatibility with additional purchase modules for X20 by isolating
±
12
V, +5 V front, on the rear no more
±
12 V; +5 V on other non-critical pins on
the rear side; CAN bus can only be switched for CAN modules, external
modules can no longer block CAN bus on other slots; AUX signals isolated;
local bus pins completely free; slots 3 and 4 can also be used for CAN/R&S
TS-PMB V3;
starting at serial No. TS-PCA3 100109.
The results are related mostly to connector X20, which is designated as J2 or X20
depending on the standard or document.
A.1.2
Effects of the TS-PCA3 backplane redesign V4.0
A.1.2.1
Reason
Incompatibilities with some new PXI modules from third-party suppliers with PXI local
bus were eliminated.
Deviations from the PXI regulations for third-party modules as well as for the Com-
pactTSVP presented a possibility for damage to third-part modules as well as a fault in
CAN communication between the modules CompactTSVP modules built into the
frame.
R&S TS-PCA3 Backplane Versions