Lake Shore Model 370 AC Resistance Bridge User’s Manual
bulk head connection or other conductive point on the Dewar to provide the single connection between isolated
measurement circuitry and the Earth grounded Dewar.
25-Pin Female.bmp
Pin
Name
Pin
Name
1
2
3
4
5
6
7
8
9
10
11
12
13
Body
Shield
Shield
1 I+
1 V+
Shield
2 I+
2 V+
Shield
3 I+
3 V+
Shield
4 I+
4 V+
Shield
14
15
16
17
18
19
20
21
22
23
24
25
Shield
1 I–
1 V–
Shield
2 I–
2 V–
Shield
3 I–
3 V–
Shield
4 I–
4 V–
NOTES:
1. Guards are not carried through the scanner
2. Shields are connected to isolated measurement common
Figure 3-8. Scanner Input Connector
3.5.4
Scanner Output Connector Definition
Two 6-pin (240
°
) Circular DIN 45322 receptacles are used for the resistance measurement output from the scanner.
These are identical to the connectors used on the resistance input of the Model 370. The cables included with the scanner
are adequate for most installations. Connector pin definition on the scanner is identical to the input connector definition
given in Paragraph 3.4.1 in case a cable must be made for a special application. Guard pins are not connected inside the
scanner but guards can be carried through the cable making them reversible. Connectors mate with 6-pin Circular DIN
plug (Lake Shore P/N G-106-233).
3.5.5
Scanner Output Cabling
A scanner to instrument cable (Lake Shore P/N 112-374) is included with the Model 3716/L and 3708 Scanner. The
figure below illustrates the cable wiring. This configuration is recommended when making cables for the scanner.
Shielded twisted pair, as described in Paragraph 3.4.3, can be used instead of dual triax for less demanding applications.
Cable shields should always be tied to connector shield pins on both ends of this cable.
3-8
Installation
