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Supplier
Information
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DYNATIME®
Digital Series
Solid
State, RS232 PC Board Mount Hour Meters and Events Counters
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Hour Meter Model
DDS232H solid-state hour meters have been developed
to meet the most difficult requirements of many military
and aerospace applications. In one PCB mount package,
the DDS232H provides a highly reliable means of monitoring
the system and provides an RS232/TTL output making it
more compatible with industry standard electronic system
design.
The indicator operates with 4.5 to 10 VDC and has a
range of 99999.99 hours. In addition, the DDS232H has
been tested to the MIL-M-7793/13 specification and can
be applied to any severe environment.
Event Counter Model
The DDS232C solid-state Event Counter records counts
when the unit receives power for greater than 5 seconds.
Power-on times of less than 4 seconds will not cause
the counter to increment, allowing the count to be read
without affecting the results. The count range is 9,999,999.
All connections, data collection, and the display of
counts are made in the same manner as the DDS232H Hour
meter. The DDS232C Event Counter meets the requirements
of M7793 and the same environmental, mechanical, and
electrical specifications as the DDS232H.
Cleared
by DoD/OFOISR for public release under reference number
06-S-1343 on April 20, 2006.
See
dimensions.
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Monitors your system usage |
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RS232/TTL Output |
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PCB Mount |
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Non-Volatile Memory |
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Meets mechanical and environmental
characterisitics of MIL-M-7793/13 |
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| Electrical
Specifications |
| The meters meet
or exceed applicable requirements of MIL-M-7793
M7793/13. Other ratings and configurations are also
available. |
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Operating Voltage Range: 4.5 to 10 VDC |
| Ripple
Voltage: 2 volt peak (4 volt peak-to-peak) ripple
between 10 Hz and 10 kHz superimposed on 7.0 VDC.
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| Output
Impedance: 465 ohms ± 10% |
| Logic
Zero: Between 0.0 and +0.26 volts. |
| Logic
One: Between +3.3 and +4.5 volts. |
| Power
Consumption: 2 milliwatts, max. |
| Transient
Protection: Operation when subjected to ±25
volt transients of 10 microsecond duration occurring
at a 1 millisecond repetition rate. |
| Dielectric:
Withstands 600VRMS (room) and 350 VRMS (altitude).
applied between the power terminals (+5VDC and common)
and an external ground that contact the meter case
on the five sides without terminals. |
| Insulation.
Resistance: MIL-STD-202, Method 302, Condition
B |
| Accuracy:
0.1% over temperature/voltage range |
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| Case
Dimensions: 1.1" long x .450" wide
x .275" high. See dimensional drawing below |
| Weight:
Less than 0.2 ounces. |
| Time
Range: 99999.99 hours |
| Count
Range: 9,999,999 |
| Meter
Output: RS232/TTL |
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| Temperature: -65
to +125°C (Operating) |
| Shock: MIL-STD-202,
Method 213, Condition I |
| Vibration: MIL-STD-202,
Method 204, Condition D |
| Life Accuracy:
± 0.1% from -65 to +125°C and 4.5 to 10 VDC
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Models
DDS232H
and DDS232C
| This PDF contains a printable version
of the hard copy catalog page. |
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L-3-EDI
DDS232.pdf |
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Note: Viewing and printing PDF files requires the
free Adobe Acrobat Reader program. You can download
Acrobat Reader from Adobe's
web site. |
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