5 Effect of shorting Associated Binary Binary Binary Pin Binary Monitor State Function to pin 5 (GND) of Monitor with respective Pass Fail Pin Binary Input Output Pin Binary Input shorted Path is NOT UR LF connected to DC 2 respective 2 wrt 5 0V wrt 5 Control panel SHV connector Path is NOT LR LF connected to DC 7 respective front 7 wrt 5 0V wrt 5 Control panel SHV connector Path is NOT UL LF connected to DC 1 respective front 1 wrt 5 0V wrt 5 Control panel SHV connector Path is NOT LL LF connected to DC 6 respective 6 wrt 5 0V wrt 5 Control panel SHV connector Pole Zero Pole-zero stage 3 3 wrt 5 0V wrt 5 Bypass IS active LF DC Path Transfer Function This section verifies the transfer function of LF DC path and the monitoring amplifiers associated with each quadrant’s output. Using an SR-785, observe the transfer function as prompted by the following table and mark each result as or as appropriate. The outputs are taken differentially at the front “Pass” “Fail” panel monitoring port labeled Outputs to ADC”. “Monitor Table 6 Mag/Phase at Mag/Phase at 1 Binary 10Hz measured kHz measured Input Function Input differentially at differentially at Pass Fail Pin Tested respective respective State monitor output monitor output Open, no Open, no DAC All connection seen to connection seen Input All Open any monitor to any monitor Pins 6/14 output output 20.3+/-1dB, 22.3+/-1dB, 44.7 DAC 2 and 3 +/- 5 +/- 5 degrees at UR LF Pins to 5 degrees at panel DC 6/14 shorted panel monitor monitor
5 Function Binary Pin Effect of shorting Binary Pin to pin 5 (GND) of Binary Input Associated Binary Monitor Output Pin Binary Monitor State with respective Binary Input shorted Pass Fail UR LF DC Control 2 Path is NOT connected to respective panel SHV connector 2 wrt 5 0V wrt 5 LR LF DC Control 7 Path is NOT connected to respective front panel SHV connector 7 wrt 5 0V wrt 5 UL LF DC Control 1 Path is NOT connected to respective front panel SHV connector 1 wrt 5 0V wrt 5 LL LF DC Control 6 Path is NOT connected to respective panel SHV connector 6 wrt 5 0V wrt 5 Pole Zero Bypass 3 Pole-zero stage IS active 3 wrt 5 0V wrt 5 LF DC Path Transfer Function This section verifies the transfer function of LF DC path and the monitoring amplifiers associated with each quadrant’s output. Using an SR-785, observe the transfer function as prompted by the following table and mark each result as “Pass” or “Fail” as appropriate. The outputs are taken differentially at the front panel monitoring port labeled “Monitor Outputs to ADC”. Table 6 Input Binary Input Pin State Mag/Phase at 10Hz measured differentially at respective monitor output Mag/Phase at 1 kHz measured differentially at respective monitor output Function Tested Pass Fail DAC Input Pins 6/14 All Open Open, no connection seen to any monitor output Open, no connection seen to any monitor output All DAC Pins 6/14 2 and 3 to 5 shorted 20.3+/-1dB, +/- 5 degrees at panel monitor 22.3+/-1dB, 44.7 +/- 5 degrees at panel monitor UR LF DC
ITM_LNLVDriverTest_v2.docx