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Usage Guide

Hardware Test Setup (EZ-THERM)

This section connects the physical test hardware needed to verify that the EZ-THERM outputs correct voltages and currents through its 5 BNC ports.

Note: If a 120V DC power supply is not available, any other DC power supply can be used temporarily — 30V is sufficient to test functionality.

  1. EZ-Therm controller
  2. The EZ-Therm controller must be plugged in and powered on.
  3. Use the "ELEC TEST HUB" to connect the controller to the Relay USB port.
  4. Use the same hub to connect the controller to the GPIB USB port.
  5. Connect the front-panel BNC ports (AUX, VO INT, TRIG) to the corresponding labeled Relay BNC cables.

  6. The VO EXT BNC port uses a T-splitter to place the Relay BNC and a heat-sinking 20 Ohm resistor in parallel: two T-splitter ports connect to wire bundles from the Relay BNC, and the third connects to the VO EXT port on the EZ-THERM controller.

  7. Relay Power (5V DC)

  8. The red split cable connects to the Relay's VCC in parallel: the longer wire goes to the red "HI INPUT" of the multimeter, and the shorter wire goes to the positive (RED) side of the "OUTPUT 2" BNC connector on the black load box.

  9. The black ground wire connects to the black "LO INPUT" port of the multimeter.

  10. Keithley Multimeter

  11. Must be plugged in and turned on.
  12. The top red "HI INPUT" port connects to the Relay's VCC wire (longer wire).
  13. The middle black "LO INPUT" connects to the Relay's black ground, and GND connects to the back of the multimeter.

  14. The bottom white "AMPS" input connects to the output (BLACK port) of the black load box's "OUTPUT 2".

  15. Keithley 7001 Switch System

  16. Controls the different loads going to the EZ-THERM; must be plugged in and turned on.
  17. The rear GPIB port connects to the ELEC TEST HUB and then to the controller system.

  18. The multimeter and the black load box connect to the 7001 switch system at the rear.

  19. Load Box

  20. Set the load's knob to the "Disconnect" position.
  21. The rear connector of the load box connects to the 7001 switch system.

  22. The "OUTPUT 2" BNC port connects positively to the Relay's VCC and negatively out to the multimeter's "AMPS" input.

  23. Voltage Source (External Power Supply)

  24. Connects directly to the VI EXT port of the EZ-Therm controller.
  25. The guide's test used 60V; the power supply model referenced is the NPS1203W (0–120V / 3A).

[schematic diagram in source — verify against original PDF]

Connecting the Relay USB (NI MAX Configuration)

  1. Open NI MAX as Administrator (search "NI MAX" in the Windows search bar).
  2. Click the Devices and Interfaces drop-down and note the current ASRL COM ports (take a screenshot for reference).
  3. Disconnect the white Relay USB from the ELEC TEST HUB (the hub connecting to the EZ-Therm controller).
  4. Exit and reopen NI MAX.
  5. Compare against the earlier screenshot to identify which COM port disappeared.
  6. Reconnect the Relay USB to the ELEC TEST HUB port.
  7. Exit and reopen NI MAX.
  8. Identify the newly appeared COM port.
  9. Click the new COM port and rename it to RELAY under Name.
  10. Click Save.

Running the GUI Tests (EZ-THERM)

  1. On the C: drive, check for a folder named elec_test. If it doesn't exist, create it; otherwise continue.
  2. Open Auto-Measurement.
  3. Enter the System and Device Information.
  4. Press Electronics Test, then Start.
  5. Press OK.

Note: The green LED lights up while testing is in progress.

  1. When finished, a data .xlsx file named ELEC_TEST_........ is automatically saved to C:\elec_test\.
  2. Copy the resulting data .xlsx file to Z:\Production Data\EZ500\Electrical Tests\.

Testing PCB Rev B Installed in SanjController+ (NT220)

Due to unresolved GPIB-related issues, electrical test data cannot be collected directly from a SanjController+. Instead, a known-good EZ-Therm controller is used with a different setup to collect electrical data on the PCB EB installed inside the SanjController+.

Setup for the known-good EZ-THERM:

  1. Disconnect the Ethernet cable connected to the SBRio (this disables the SBRio and the PCB EB).
  2. Connect the USB GPIB to any USB 3.0 port.
  3. Connect the Relay USB to any USB 3.0 port.

Setup for the SanjController+:

  1. Disconnect the Ethernet cable connected to the Dual Port PCB.
  2. Use an Ethernet extension to connect the Ethernet cable that was connected to the SBRio inside the SanjController+ to the Ethernet input of the EZ-THERM (NIR CAM), to communicate with the NUC of the EZ-THERM.
  3. Connect VDC -60V to VI-EXT.
  4. Connect a 20 Ohm resistor load to VO-EXT.
  5. Connect VO-INT, VAUX-INT, and TRIG BNC connectors from the loading box.

[diagram in source — verify against original PDF]

Running the Python Script for Electrical Data (SanjController+ path)

  1. Open SV7 from C:\Program Files\SanjVIEW\SV7.
  2. Run "Initialize Python" from Project Manager → Automeasurement → Setup.
  3. Run "Electronics Test".
  4. Once the test finishes (the green light turns off), the electrical test result is saved locally to:
C:\ELECTRICAL_TEST_"System Serial Number"_MM_DD_YYYY.csv
  1. Copy this file to the Microsanj drive at Z:\Production Data\EZ500\Electrical Tests\ for data analysis.