Arizona Jerome 631-X Appendix C Internal DIP Switch Settings, Switch # Position Function Comment

13. APPENDIX C - INTERNAL DIP SWITCH SETTINGS

The DIP switch identified as SW2 on the 631-X control board is located at the top center of the board.

CAUTION:

Switch the instrument’s power to OFF before opening the instrument

and changing DIP switch settings.

DIP Switch Settings:

Switch #	Position	Function		Comment
1	ON	AUTORANGE		DISABLED (SEE DIP SWITCHES 5 & 6)
1	OFF	AUTORANGE		ENABLED
2	X	NOT USED
3	X	NOT USED
4	ON	ZERO	DISPLAY:
		00-99
4	OFF	ZERO	DISPLAY:
		L-O-H

	Switch #	Function			Comment
5	6	RANGE			SAMPLE TIME
ON	ON	0	(.000	- .099PPM)	30 SECONDS
ON	OFF	1	(0.10	- 0.99 PPM)	25 SECONDS
OFF	ON	2	(01.0	- 09.9 PPM)	16 SECONDS
OFF	OFF	3	(10 - 50 PPM)		13 SECONDS

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