Multiple Test Point

Stand-alone multi-channel igniter and weapon circuit testers. The 1n-SQB-BTP Series of Weapon System Circuit Testers is a family of multimeters with rugged control computer for measuring the resistance and stray voltage in a weapon system's multiple electrical circuit paths.

These fully automated circuit testers are used to test devices such as rocket igniters, fuses, explosive bolts, squibs, blasting caps, bit test lines, and electro component lines (relays, actuators, diodes, semiconductor devices) that are contained in the weapon. Our SQB Series testers dramatically reduces the risks of accidental detonations without compromising high accuracy.

  • OEM Subassembly Level Testing - Verify the electrical integrity of weapon subassembly components before they are integrated into the weapon system.
  • OEM System Level Testing - Perform weapon-level electrical integrity testing before delivery to the customer.
  • Field Level Testing - Conduct field or depot-level electrical integrity tests before troop deployment or integration with a launch platform.

Our SQB Series features:

  • Six resistance ranges, two stray voltage ranges, and diode testing.
  • Fiber optic connection between control computer and tester ensures safety isolation between computer power and weapon system.
  • Kelvin four-wire test leads/ cable arrangement automatically compensates for lead resistance.
  • Reading stabilizes in less than 2 seconds. Large format LCD with clear indication of measurement range and units, battery level, and calibration status.
  • Digitally calibrated insensitive to thermomechanical drift of calibration trim potentiometers. No requirement to open the meter, which allows in-house customer calibration.
  • Our modular, scalable product designs support from 8 to 1,024 test paths. Our unique matrix selector design permits measurement of any one test point relative to any other test point.
  • A verification module proves that the tester and cabling are ready for measurement by simulating the weapons test paths.

Tester Control

The 1n-SQB-BTP Series features a unique manual measurement mode (including test cables) that allows the user to verify test circuits without the need for a separate meter. For automated use, the tester can be controlled using either Space Electronics or your own measurement control software.

Safety Features

Our Multi-Channel Weapon System Circuit Testers feature a unique approach to safety: redundant circuits and mechanisms, which go beyond the single-point-failure methodology to guarantee that test current remains less than one one-thousandth of a devices firing current.

Our power system design ensures protection against power surges and inadvertent operator error, including attaching the tester to a source of voltage or current higher than allowed.

Our design incorporates multiple ground isolation barriers to ensure that there are no potential current paths to ground that could exceed the rated fail-safe current.

To prevent damage to the circuit testers current-limiting circuitry, we encapsulate and mount these fail-safe devices directly at both the testers input power and the weapons test signal connection points. This means that these barriers are after the matrix selector system, yielding an additional level of safety.



Range

Full Scale (FS)

Overage
Capacity 

Resolution

Accuracy %FS

Units

Nominal
Measurement
Current

20 ohm

20 ohm

5%

0.001 ohm

0.05 %

ohm

2.2 mA

200 ohm

200 ohm

5%

0.01 ohm

0.025 %

ohm

2 mA

2 kohm

2 kohm

5%

0.1 ohm

0.025 %

kohm

0.5 mA

20 kohm

20 kohm

10%

1 ohm

0.05 %

kohm

0.044 mA

200 kohm

200 kohm

5%

10 ohm

0.5 %

kohm

0.005 mA

2 Mohm

2 Mohm

5%

100 ohm

1.0 %

Mohm

0.001 mA

DIODE

2.0 VDC

10%

0.001 VDC

0.5 %

Volts

2.6 mA

2 VDC

2.0 VDC

10%

0.001 VDC

0.5 %

Volts

None

100 mVDC

100 mVDC

10%

0.001 mVDC

0.5 %

mVolts

None

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