Bias Path Measurement With the conditions established per the table below, measure the output noise with the AC coupling box at the SHV front panel output. Use a well filtered, low voltage noise source to drive the DAC input where appropriate to avoid introducing noise. Mark each result or as appropriate “Pass” “Fail” 9 Noise at Noise at Input Output Pass Fail 100Hz 1 kHz DAC Input Front Panel SHV Pins 1/9 to ETM” 16 +/-3 16 +/-3 “Bias shorted (USE AC nV/√Hz nV/√Hz together Coupler Box) and grounded DAC Front Panel SHV Input to ETM” 16 +/-3 16 +/-3 “Bias Pins 1/9 (USE AC nV/√Hz nV/√Hz driven to Coupler Box) +10V DAC Front Panel SHV Input to ETM” 16 +/-3 16 +/-3 “Bias Pins 1/9 (USE AC nV/√Hz nV/√Hz driven to Coupler Box) -10V
Bias Path Measurement With the conditions established per the table below, measure the output noise with the AC coupling box at the SHV front panel output. Use a well filtered, low voltage noise source to drive the DAC input where appropriate to avoid introducing noise. Mark each result “Pass” or “Fail” as appropriate 9 Input Output Noise at 100Hz Noise at 1 kHz Pass Fail DAC Input Pins 1/9 shorted together and grounded Front Panel SHV “Bias to ETM” (USE AC Coupler Box) 16 +/-3 nV/√Hz 16 +/-3 nV/√Hz DAC Input Pins 1/9 driven to +10V Front Panel SHV “Bias to ETM” (USE AC Coupler Box) 16 +/-3 nV/√Hz 16 +/-3 nV/√Hz DAC Input Pins 1/9 driven to -10V Front Panel SHV “Bias to ETM” (USE AC Coupler Box) 16 +/-3 nV/√Hz 16 +/-3 nV/√Hz
ITM_LNLVDriverTest_v2.docx