TriPoint VertexRSI 7200, Руководство по эксплуатации и обслуживанию

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7 2 0 0 TRO UBLESH O O TIN G
G - 6
5.0 Re so l v e r E rr o r s
For a ll reso l ver errors, check the cab l e f i rst and make sure that D-subconnector i s
secure l y connected to the back of the A C U. A l so ver i fy that sh i e l d li nes are
connected to the A C U, but OPEN at the reso l ver. Sh i e l d li nes shou l d not short to
each other. [Refer to Tab l e 4-4 ( i n Sect i on 4.0 of th i s manua l ) to ensure that
sh i e l d i ng pa i rs are i nsta ll ed correct l y.]
The fo ll o w i ng reso l ver D C res i stance read i ngs are li sted as a check li st. It i s
i mportant that the S l ead pa i rs match each other. If measur i ng from the D-
connector end, there w ill be some extra cab l e res i stance.
T w o-speed:
- R1-R2: 1 7 ohms
- S1-S3: 1 5 2 ohms
- S2-S4: 1 5 2 ohms
- S1 1-S1 3: 5 6 2 ohms
- S1 2-S1 4: 5 6 2 ohms
Standard (2 5 0 0 Hz @ 4.4 V RMS)
- R1-R2: 1 9 ohms
- S1-S3: 6.8 ohms
- S2-S4: 6.8 ohms
H i gh accuracy (4 0 0 Hz @ 1 1.8 V RMS)
- R1-R2: 1 2 0 ohms
- S1-S3: 4 7 5 ohms
- S2-S4: 4 7 5 ohms
5.1 Re so l v e r Rea dout Bobb l e
If the reso l ver readout bobb l es, espec i a ll y i n the l ast fe w b i ts on the RD C status
d i sp l ay, there may be i nsuff i c i ent exc i tat i on vo l tage (th i s prob l em i s common w i th
the t w o-speed reso l vers). Use an osc ill oscope to measure the A C component on
the S2 or S3 l ead ( i t i s recommended that the bottom of the appropr i ate trans i ent
suppressor be used as a t i e po i nt; refer to the appropr i ate dra w i ng i n Sect i on 8.0).
A s the spat i a l ang l e of the reso l ver shaft changes, the s i ne w ave shou l d peak at 2
V RMS [5.6 5 V peak-to-peak (p-p)]. H i gher vo l tages w ill cause saturat i on of the
RD C ’s and shou l d be avo i ded. Lo w er vo l tages w ill reduce the s i gna l to no i se l eve l .