CPI Canada Inc.
Installation
2
Figure 2-10A). This part number must appear in the last column of Table 2 in X-Ray Tube Stator
Compatibility Tables Supplement 746026-00.
2.8.2 Tube type setting on DIP switch SW1 for DSS Boards #728877-06 and #903132-02 (Cont)
5.
Refer to figure 2-10. Set DIP switch SW1 with the binary code for the selected tube. The binary
code shown in the referenced Table 2 programs the tube type (housing and insert), for example
housing type Varian Sapphire with standard “R” stator and inserts per Table 2 requires SW1-1 to
be set ON, SW1-2 OFF, SW1-3 ON, SW1-4 OFF and SW1-5 OFF. This programs the voltages,
brake times, and boost times required.
Additionally, SW1-6 to SW1-8 may be set to give incremental increases in boost time over the
preselected values (i.e. to run an older tube with worn bearings). For example, binary 000 gives
zero increase, binary 001 gives 100 ms increase, binary 100 gives 400 ms increase, and binary
111 gives a 700 ms increase in boost time. SW1-6 represents bit 1, SW1-7 bit 2, and SW1-8
represents bit 3.
EXAMPLE:
Binary 100 = decimal 4 = 400 ms incremental boost time increase:
1
0
0
Bit 3
Bit 2
Bit 1
SW1-8
SW1-7
SW1-6
6.
The DIP switch setting shown in figure 2-10 is for the example in step 5 with an incremental
increase in boost time of 200 ms.
7
.
Please confirm all settings to ensure proper anode RPM. Before making any exposures,
use any of the following:
1) An accelerometer and an oscilloscope with Fast Fourier Transform (FFT) feature or
2) An accelerometer and a spectrum analyzer to verify anode rotation speed or
3) A suitable tachometer that is capable of measuring the anode rotation speed.
or
•
Follow the tube's manufacturer's recommendation for verifying anode speed, if
available.
NOTE: FOR TUBES WHERE “LOW SPEED OPERATION ONLY” IS INDICATED, THE DUAL-
SPEED STARTER MUST BE PROGRAMMED FOR LOW SPEED ONLY, AND WHERE
“HIGH SPEED OPERATION ONLY” IS INDICATED, THE DUAL-SPEED STARTER MUST BE
PROGRAMMED FOR HIGH SPEED OPERATION ONLY. REFER TO THE TUBE SELECTION
SECTION IN CHAPTER 3C FOR THE PROCEDURE TO DO THIS.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
CMP 200
X-Ray Generator Service Manual Ch # 901476-02 Rev. P
Page 2-21