Fluke Biomedical 942A-200L-M4 - Manual (Page 54)

942A-200L-M4 & 942A-200L-M5 UDR
Operator Manual
3-14
3.9 Jumper Selectable Options
NOTE
The unit must be turned off when changing jumpers.
Table 3-1 Model 942A-200L-M4 and 942A-200L-M5 Option Jumpers (Refer to drawing 942-200-10,
Appendix A, for Jumper Location)
Jumper Function Position Operation
JP1 Microprocessor Reset Out
IN Normal Operation (factory) Momentary
connect to reset microprocessor without
cycling AC power Not Applicable
JP2 PROM Type 1-2
2-3 PROM 27128
PROM 27256 (factory)
JP3-
1/JP3-2 Statistical Accuracy
(It should be noted that this
accuracy refers only to the
statistical interpretation of
detector counts, and not
detector accuracy) Out/Out
Out/In
In/Out
In/In 2% Accuracy – 9604
5% Accuracy – 1537 Target Counts
10% Accuracy – 384 Target Counts
Fixed one second display update (factory)
JP3-3 Alarm Acknowledge In
Out Manual Acknowledge (factory)
Automatic
JP3-4 Fail Alarm In
Out Enable No Counts Fail Alarm (factory)
Inhibit No Counts Fail Alarm
JP3-5 Check Source Alarm In
Out Alarm Inhibited (factory)
Alarm Enabled
JP4 Input Pulse Selection 1-2
2-3 - Input Pulse (Scintillation Detectors)
(factory)
+ Input Pulse (GM Detectors)
JP5 Shield Polarity Selection 1-2
2-3 + Shield for Negative Pulse (factory)
- Shield for Positive Pulse (GM)
JP6 Anti-Jam Fuse Selection 1-2
2-3
Out Enable for Normal Operation (factory)
Anti-Jam Circuit fuse bypassed (testing)
Anti-Jam Circuit Disabled (for testing only)
JP7 Detector Type for Anti-Jam
Circuit 1-2
2-3 Scintillation (factory)
GM Tube