ORTEC 863, Operating And Service Manual

4

Fig. 4.1.  Jumper Selection Settings.

Pin

Function

Pin

Function

1

+3 V

23

Reserved

2

- 3 V

24

Reserved

3

Spare bus

25

Reserved

4

Reserved bus

26

Spare

5

Coaxial

27

Spare

6

Coaxial

*28

+24 V

7

Coaxial

*29

- 24 V

8

200 V dc

30

Spare bus

9

Spare

31

Spare

*10

+6 V

32

Spare

*11

- 6 V

*33

117 V ac (hot)

12

Reserved bus

*34

Power return ground

13

Spare

35

Reset (Scaler)

14

Spare

36

Gate

15

Reserved

37

Reset (Auxiliary)

*16

+12 V

38

Coaxial

*17

- 12 V

39

Coaxial

18

Spare bus

40

Coaxial

19

Reserved bus 

*41

117 V ac (neutral)

20

Spare

*42

High-quality ground

21

Spare

 G

Ground guide pin

22

Reserved

Pins marked (*) are installed and wired in ORTEC’s 4001A
and 4001C Modular System Bins.

Bin/Module Connector Pin Assignments For Standard

Nuclear Instrument Modules per DOE/ER-0457T.

using jumper W5, and is inverting. The 863 is
shipped with W5 in the 5× position.

The output driver stage is hybrid amplifier A5. This
amplifier can drive ±5 V into a 50 

Ω

 load impedance.

Overall dc-stability of the output level of the 863 is

provided by a continuous baseline restorer. The
operational amplifier, U1, is connected as an
integrator and feeds back the dc value of the output
voltage to amplifier A1. The nominal voltage gain of
the output driver stage is 10× noninverting.