Lakeshore DRC-70 User Manual page 4

Table of I l l u s t r a t i o n s
R e f e r e n c e D e s c r i p t i o n Page
F i g u r e 1.1
Model DRC-70 D i g i t a l Cryogenic Thermometer i v
F i g u r e 1 . 2 Model DRC-70C D i g i t a l Cryogenic Thermometer/
C o n t r o l l e r
V
F i g u r e 2.1 S e n s o r Cable Diagrams
7
T a b l e 3 . 1 E n t r y Number C o r r e l a t i o n
9
F i g u r e 3 . 1
DRC-70 F r o n t P a n e l 1 1
F i g u r e 3.2 DRC-70 Rear P a n e l 1 2
F i g u r e 3.3 DRC-7C/70C F r o n t P a n e l 13
F i g u r e 3 . 4 DRC-7C/70C R e a r P a n e l 1 4
T a b l e 3 . 2 BCD Temperature Output
-
Remote
I/0
17
T a b l e 3.3
DT-
5 00-DRC
V o l t a g e
-
Temperature
C h a r a c t e r i s t i c
18
F i g u r e 4 . 1
Block Diagram of DRC-70 22
F i g u r e 4 . 2
Block Diagram of DRC-70C 23
F i g u r e 4.3 Flow Chart of DRC-Software 26
F i g u r e 4.4
C o n t r o l Gain F u n c t i o n 30
F i g u r e 4.5 C o n t r o l I n t e g r a l F u n c t i o n 30
T a b l e 5 . 1 DRC S i g n a l s and F u n c t i o n s
34
F i g u r e 5 . 1 DRC Component Waveforms 36
T a b l e 5 . 2 P r o b l e m and S o l u t i o n
38
T a b l e 6 . 1 Model D R C - S e r i e s C i r c u i t Board Components
40
F i g u r e 6 . 1 DRC-Circuit Schematic
44
F i g u r e 6.2
DRC-Component Layout 45
F i g u r e 6.3 D i s p l a y Board Schematic
46
F i g u r e 6.4 DRC-L/A O p t i o n Schematic
47