1. McCrometer Nano Board Test Procedure
Assembly#
Test Revision
Date
Changes A
Initial released
A~1
Modified per customer request (attached in document control folder)

2. mA series diagram Test Procedure: Pin 2 Pin 1 49.9 resistor wire
1. Power board with the battery that has less than 12.8 Volts, using the 49 Ω resistor and mA meter in series.
a. Under low voltage conditions the board should enter sleep mode in a few seconds and the current should settle to from mA to mA.
b. Press the test button, SW1, (turning Vcs on). Note that LED 1 is on, and current has risen to within 14 to 22 mA.
mA series diagram
Pin 2
Pin 1
49.9 resistor wire

3. 2. Check to see that Vreg at microprocessor (U4) pin 20 is within 4
2. Check to see that Vreg at microprocessor (U4) pin 20 is within V to V. Note: the left side of C12 (with screen right reading) is an equivalent test point.
3. Power the board with the battery that has greater than 12.8 Volts (without the 49 Ω resistor or mA meter).
4. With Vcs on, check that the minimum Voltage at J2-6 is no lower than Vbatt – 1.4 Volts.
5. With Vcs on, check that the minimum Voltage at J3-6 is no lower than Vbatt – 1.4 Volts.
6. Double click NanoConfigv12_17.exe
7. Connect the serial cable and (in the Flow Sensor window) click on Get Complete Configuration and read the parameters.
8. On the Freq Setup tab change all values to match the screen shown below. (To change a value, enter the new number in the box adjacent to the Set button and click on Set.

4. 9. Turn OFF/ON the power to the Nano to reboot the processor, and re-read the parameters by clicking “Get Complete Configuration” (verifying they are retained).
10. On the Operation tab compare the value adjacent to Battery Voltage (volts x 100) to the actual battery Voltage. They should agree to within 0.5 Volts.
11. Check the Analog Input channels using the Calibrated Voltage Source. (Referring to the NanoCourier Connector Diagram “A” note that Analog 1IN is the white wire connected to J1-3; Analog 2IN is the yellow wire connected to J1-4). Click on the Operation tab, click on Get Normal Station Report, and examine the values adjacent to Analog In 1 (0-1023) and Analog In 2 (0-1023). These values should fall in the following ranges:
a. Analog 1& 2 1 Volt in 202 – 206 raw
b. Analog 1& 2 4 Volts in 816 – 820 raw
12. Connect the Signal Generator to Pulse In (white wire with orange stripe connected to J1-5). Connect the Pulse Output (brown wire connected to J1-1) through a 12 kΩ pull-up resistor to +12V. Note that with Freq for Max output set to 1000 Hz and Analog Calibration set at 977, then each 1 Hz on the Pulse Input yields 1 μA on the Analog Output if the Wake-up has been switched on (i.e., Wake-up at J4-1 has been connected to 5 V at J4-3 with the toggle switch provided for that purpose). The following are the expected results for typical test frequencies generated by a 5 Vpp Signal Generator. When the Pulse_Inputs/Output divide ratio equals the frequency of the Pulse Input (as measured with a Frequency Counter), then the Pulse Output period will be one second and thus easily measured with the Oscilloscope. Note that when changing frequencies, it takes a few seconds for the output to settle on its new value. See diagram “B” below.

5. Diagram A Voltage Source with 1 & 4 volts
Note:
Analog 1 and Analog 2 can be connected to power at same time
J2 connected to computer
J3 connected to <12.8 voltage source

6. Diagram B
12kOhm wire
Connected to PC
Connected to power

7. toggle a. With 200 Hz, 5 Vpp, square wave (from signal generator)
i. Toggle Wake-up (toggle)
1. Wake-up On: Current output (0-1 mA configuration) = 198 to 202 μA (measured with ammeter)
2. Wake-up Off: Current output < 2 μA (measured with ammeter)
ii. Pulse out duration: 95 to 104 ms (101 ms typical) (measured with Oscope)
iii. Pulse out period: 1 second (when divide ratio = 200)
b. With 800 Hz, 5 Vpp, square wave (from signal generator)
i. Toggle Wake-up switch
1. Wake-up switch On Current output (0-1 mA configuration) = 798 to 802 μA
2. Wake-up switch Off: Current output < 2 μA
i. Pulse out duration: 95 to 104 ms (101 ms typical)
ii. Pulse out period: 1 second (when divide ratio = 800)
c. If the board does not meet the above specifications, then adjust the Analog Calibration value up or down slightly and redo the “Toggle Wake-up” sections.
d. Label the board with the Analog Calibration value that meets specification (ex: 978)
*See Diagram C for wire connection*
toggle

8. 12kOhm wire
Diagram C
Connected to PC
Connected to power 8

9. e. Under the Freq Setup tab change the Analog Calibration value to 1000 (B) for the following tests:
f. With 200 Hz, 5 Vpp, square wave
i. Switch to the Operation tab of the software
ii. Click the Get Full Station Report button, and check the response next to the Analog Output label. The raw value output should be between 202 and 206 (A).
g. With 800 Hz, 5 Vpp, square wave
Click the Get Full Station Report button, and check the response next to the Analog Output label. The raw value output should be between 816 and 820 (A) (Note: when frequency is changed it takes some time for the new output to settle on its final value.) A B

10. h. Under the Freq Setup tab, set the Sample Time (A) to 10 seconds and Pulse_Inputs/Output divide ratio (B) to
i. Leave the Analog Calibration (C) value at 1000. A B C

11. 13. Under the Reporting tab of the Flow Sensor Program check Pulse count 2 accumulation (D) (under Event reports include). Switch to the Operations tab and observe Pulse count 2 accumulation advance one count (F) each time that J4-6 is grounded with the provided push-button switch (E) . When satisfied this feature is working normally, return to the Reporting tab and uncheck Pulse count 2 accumulation (D) . E D F

12. 14. Sleep mode test setup:
a. Temporarily disconnect the pulse input signal.
b. Disconnect the serial cable.
c. Make sure the Wake-up switch is off.
d. Make sure the Pulse_Inputs/Output divide ratio (under Freq Setup tab) was reset to
e. Put the mA meter in series with the battery that is < 12.8 V. (refer to mA series diagram on page 2)
f. Note that when sleeping LED 1 is off.
15. Sleep mode tests
Verify that under the following input conditions the sleep current eventually settles to these values (only briefly bouncing higher):
a. Sleep current, no input to 0.13 mA
b. Sleep current, 200 Hz input approximately 0.15 mA to 0.19 mA
c. Sleep current, 800 Hz input approximately 0.26 mA to 0.30 mA
16. Disconnect all test apparatus from the NanoCourier board, and affix a label to the board indicating it has “Passed Bench Test”.