Fluke Biomedical 945A - Manual (Page 81)

Preamplifier Interface Board 977-210-10 Switch Settings
Switch Normal Op. Switch Function
SW3-1 ON 0/OFF Selects 300 baud • 1/ON Selects 4800 baud (normal setting)
SW3-2 OFF 0/OFF Selects alarm inhibit, SW3-3 must be on for this state to be true.
1/ON Selects alarm enable
SW3-3 OFF 0/OFF Selects Rate Mode (normal) • 1/ON Selects Maintenance Mode
SW3-4 OFF 0/OFF forces 977 analog output to 0 V (low scale)
(SW3-3 must be on for state to be true)
1/ON forces 977 analog output to 10 V
(SW3-3 must be on for state to be true)
NOTE
The above switches are located in a 4 position dip switch on the
977 interface board (977-210-10).
Jumper Positions for Preamplifier Interface Board 977-210-10
Jumper Normal
Setting
Function Alternate
Setting
Function
JMP1 A to B Enables Victoreen Loop (normal) B to C Enables RS232C
JMP2 N/A Deleted, Not Used N/A Deleted, Not Used
JMP3 A to B Enables Alarm Output -
Non-Failsafe B to C Enables Alarm Output
Failsafe
JMP4 A to B Enables 0 - 10 Vdc Analog Output
(normal) B to C Disables Analog Output (stays at
10 Vdc)
JMP5 B to C Enables HV Output (normal) A to B Disables HV Output
Jumper Positions for Preamplifier Electrometer Board 977-200-15
Jumper Normal
Setting
Function Cal.
Position
Function
JMP1 A to B Normal Operation B to C PGA Offset Adjust *
* Programmable Gain Amplifier
Model 946A-200 Option Jumpers
Jumper Function Norm Position Operation
JP3-1, Not Defined in Not Applicable
JP3-2 Not Defined in Not Applicable
JP3-3 Alarm Reset Select in Manual reset with jumper installed
Auto reset with jumper removed
JP3-4 Fail Alarm Enable in Fail alarm enabled with jumper in
Fail alarm disabled with jumper out
JP3-5 Check Source Alarm Mute in Alarms disabled during C/S with
jumper in
Alarms enabled during C/S with
jumper out
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