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SERIES AP48X ACROPACK
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 60 -
- 60 -
https://www.acromag.com
6.4 Reliability Prediction
AP482E-LF
MTBF (Mean Time Between Failure):
MTBF in hours using MIL-HDBK-217F,
FN2.
Per MIL-HDBK-217, Ground Benign, Controlled, G
B
G
C
Temperature
MTBF (Hours)
MTBF (Years)
Failure Rate (FIT
1
)
25°C
2,538,632
289.8
393.9
40°C
1,674,587
191.2
597.2
1
FIT is Failures in 10
9
hours.
AP483E-LF
MTBF (Mean Time Between Failure):
MTBF in hours using MIL-HDBK-217F,
FN2.
Per MIL-HDBK-217, Ground Benign, Controlled, G
B
G
C
Temperature
MTBF (Hours)
MTBF (Years)
Failure Rate (FIT
1
)
25°C
1,888,624
215.6
529.5
40°C
1,124,919
128.4
889.0
1
FIT is Failures in 10
9
hours.
AP484E-LF
MTBF (Mean Time Between Failure):
MTBF in hours using MIL-HDBK-217F,
FN2.
Per MIL-HDBK-217, Ground Benign, Controlled, G
B
G
C
Temperature
MTBF (Hours)
MTBF (Years)
Failure Rate (FIT
1
)
25°C
1,775,256
202.7
563.3
40°C
1,013,331
115.7
986.8
1
FIT is Failures in 10
9
hours.
6.5 Counter/Timers
Counter Functions:
Quadrature Position Measurement, Pulse Width
Modulation, Watchdog Timer, Event Counting, Frequency Measurement,
Period Measurement, Pulse-Width Measurement, and One Shot/Repetitive
Counter Input
Each Counter has an InA, InB, and InC input port.
These TTL or RS485 input
ports are used to control Start/Stop, Reload, Event Input, External Clock,
Trigger, and Up/Down operations.
Counter Output
Each Counter has an Output port.
These TTL or RS485 output ports are used
for waveform output, watchdog active indicator, or1.73
s pulse upon
counter function completion. Counter output is programmable as active high
or low.
Debounce Interval
Input signal with duration less then 2.4
s are filtered with debounce enabled
via counter control register.
Counter Clock Enable
Frequencies
62.5MHz, 15.625MHz, 7.8125MHz, 3.90625MHz, 1.953125MHz or External
up to 15MHz