Performance Tests - Verifying Specifications 1Keysight 53147A/148A/149A Assembly Level Service Guide 251 Connect an Keysight 10503 series coaxial cable between the output of the firstKeysight 3325A/B Synthesizer and the Reference 10MHz connector on theinstrument’s rear panel (see Figure 1-1).2 Connect an Keysight 10100C 50Ω Feedthrough Terminator to the Counter’sChannel 1 input connector.3 Connect an Keysight 10503 series coaxial cable between the output of thesecond Synthesizer and the feedthrough terminator on the Counter’sCHANNEL 1 input connector.Figure 1-1 External Timebase Test Setup4 Cycle the POWER button to preset the instrument.5 Press the Shift key on the instrument’s front panel.6 Press the Menu key on the instrument’s front panel.7 If necessary, use the up- and down-arrow keys to cycle the display untilit reads REF OSC > INT.8 Press the right-arrow key once. INT begins to flash off and on.9 Press the up- or down-arrow key once. INT changes to EXT.10 Press the Enter key.11 Press the Chan Select key once to select the CHANNEL 1 input connector.Keysight53147A/48A/49A Keysight 3325A/BSynthesizerKeysight 3325A/BSynthesizerTo Reference10 MHz Connector(RearPanel) 10 MHZ Output2 MHz OutputChannel 1 (with 10100C 50W Feedthrough Attached)
