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MECHANICAL SPECIFICATIONS
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TDH-7060/7061
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NOTES
[1] The accuracy specification applies for any combination of operating temperature and voltage.
[2] The accuracy will not be affected by power interruptions up to 1 millisecond, spaced at
least 10 milliseconds apart. Transient and power loss specifications are based on a maximum
duty cycle of 1/50.
[3] EMI test limits will not be exceeded during the timing interval or when continuously
energized under steady state conditions, per paragraph 3.23, MIL-PRF-83726B.
[4] Terminals X1, X2, R1, R2 and L must be connected together during the test. Dielectric
withstanding voltage and insulation resistance are measured at sea level between all mutually
insulated terminals and between all terminals and case.
[5] Recycle time is defined as the maximum time power must be removed from terminal X1 to assure
that a new cycle can be completed within the specified timing tolerance.
[6] A four digit number defines the time delay in seconds (or milliseconds). The first three
digits are significant figures, used to define the specific time delay. The fourth digit
represents the number of zeros to follow the first three digits.
SPECIFY STANDARD DECADE RANGE
- 1001 = 0.1 to 1 second (100 to 1000 milliseconds)
- 1002 = 1.0 to 10 seconds
- 5002 = 5 to 50 seconds
- 5003 = 50 to 500 seconds
An external resistor is used to obtain a specific time delay within the specified decade range.
The formula below provides the proper resistance value to achieve the desired time delay:
T1
Rext = (_____ - 1) 100,000 Ohms Where:Rext = External resistance value (Ohms)
T0 T1 = Desired time in seconds
T0 = Minimum time (low end of the decade range) in seconds.
As an example, if using a 5 to 50 second adjustable timer and a 30 second delay is desired, the calculation is:
30
Rext = (_____ - 1) 100,000 Ohms or Rext = 500 K Ohms
5
Recommended resistors IAW MIL-R-55182 1/8 Watt, 1% (RNC60HXXXXFS).
External resistor not supplied.
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