测量质量跳线（MQJ）是符合低损耗光学要求的光纤测试跳线或电缆。MQJ用于测试设备，包括使用光源和功率计进行光损耗测量的性能，以及光时域反射计（OTDR）测量。MQJ由一根光纤电缆组成，一端有一个连接器，与测试设备（如光源和功率计）匹配，另一端有一个连接器（测试终端），与被测链路/段匹配。为了配合带有MIL-PRF-64266多终端连接器的链路/段，使用测试终端适配器与多终端连接器插头或被测连接器插座连接。测试终端适配器包含插入腔配置，用于配合测试终端并将其锁定到位。 本规范表规定了测试终端适配器，它是一种与连接器插头配合的插座类型。MIL-PRF-29504/21规定了插入测试终端适配器的测试终端。

The Measurement Quality Jumper (MQJ) is a fiber optic test jumper or cable that conforms to the low loss optical requirements. The MQJ is used with test equipment including the performance of optical loss measurements using an optical source and power meter and including Optical Time Domain Reflectometer (OTDR) measurements. The MQJ consists of a single fiber cable with a connector at one end which mates to the test equipment (such as an optical source and power meter) and a connector (test terminus) at the other end which mates to the link/segment under test. For mating to a link/segment with a MIL-PRF-64266 multiple termini connector, a test terminus adapter is used to interface with the multiple termini connector plug or the connector receptacle under test. The test terminus adapter contains the insert cavity configuration to mate with and lock a test terminus in place. This specification sheet specifies the test terminus adapter that is a receptacle style for mating with a connector plug. The test terminus that is inserted into the test terminus adapter is specified under MIL-PRF-29504/21.