42 Keysight 81618A/9A and Keysight 81620B/3B/4B/6B/8B Optical Heads User’s Guide4 Performance TestsEquipment RequiredEquipment required for the performance test is listed in the table below.Any equipment that satisfies the critical specifications of the equipmentgiven in the table may be substituted for the recommended models.Table 8 Equipment Required for Performance TestInstrument/Accessory Recommended Model Interface Optical HeadRequiredCharacteristics AlternativeModels81618A81619A81623B81624B81626B81628BMultimeter Mainframe 8163A/B 1 ea 1 ea 2 ea 2 ea 2 ea 2 ea 8164A/BInterface Module Keysight 81618A – – x x x x Keysight81619AOptical Head 8162x 1 ea 2 ea – – – –CW Laser Module Keysight 81657A – – x x x xCW Laser Module 81654A – x x x x Keysight81657APower Meter Standard Keysight 81618A Optical HeadInterface Module withKeysight 81623B #C01– – x – – –Power Meter Standard Keysight 81618A Optical HeadInterface Module withKeysight 81624B #C01– – – x x xPower Sensor Module Keysight 81634B – – x x x xOptical Attenuator 8156A #221 – – x x x xOptical Attenuator 8156A #101 – – x x x xReturn LossReference CableKeysight 81610CC – – x x x xReturn Loss Module Keysight 81613A – – x x x xKit, Performance Test 81628-68705 – – – – – xTunable Laser Source 8164A and81680A #022– – – o o oPolarization Controller 11896A #025 – – – o o o
