• Initialization Current Test
  • Measures the DUT power up current.
• Power Supplies Test
  • Verifies the DC and AC voltages of the on-board and battery power supplies.
• POST Tests
  • Performs Power On Self Tests (POST) that verify the integrity of the basic digital parts such as the RAM, CPU, GMSK chip, timer, and flash memory.
• Oscillators Verification Test
  • This test verifies the frequency error of the 16.384 MHz and 32.768 kHz oscillators'.
• CPU ADC Reference Alignment
  • Adjusts the CPU ADC reference to generate the proper voltage.
• Vibrator Test
  • This test verifies the functionality of the on-board vibrator.

Transmitter Alignments

• Reference and Modulation Alignment
  • This step performs reference and deviation alignment of the RF signal. It adjusts three internal DAC controls. It aligns the reference frequency to the center for RX and TX modes and aligns the modulation deviation to +/- 2 KHz.
• Output Power 4 Level Alignment
  • This step adjusts internal DAC value for controlling output power and records DAC values for 33, 30, 27 and 24 dBm power levels.

Receiver Alignments

• Demodulation Alignment
  • This step performs offset and amplitude alignment of the RX demodulated signal by changing two internal DAC controls. It tunes the DC voltage to 1.5V and the AC voltage to 600mV.
• RSSI Alignment
  • This step performs alignment of the RSSI slope. Measures RSSI at -73dBm and -103dBm and calculates the offset and gradient of the RSSI vs. Input Power slope.

Transmitter Tests

• Output Power Alignment Verification
  • This test verifies output power alignment by measuring power at 33, 30, 27 and 24 dBm power levels at two different frequencies.
• 4 Power Level Current Test
  • This test measures power supply current at 33, 30, 27 and 24 dBm power levels.
• Power Ramp Test
  • This test performs power ramp at 33 and 24 dBm. Calculates ramp time, maximum power and one-second power stability.
• Second Harmonic Test
  • This test measures the power at the second harmonic when the modem transmits at the maximum power.
• Adjacent Channels Test
  • This test measures the power at adjacent channels when the modem transmits at the maximum power.
• FCC Mask Test
  • This test verifies that the modulated signal passes FCC transmit mask.
• Peak Deviation Test
  • This test verifies the proper deviation levels.
• Channel Acquisition Time Test
  • This test verifies the transmitter VCO lock time.

Receiver Tests

• Demodulation Alignment Verification
  • This test verifies demodulation alignment at several different frequencies. DC voltage should be around 1.5V and the AC voltage should be around 600mV.
• Channel Acquisition Time Test
  • This test verifies the receiver VCO lock time.
• SINAD Threshold Test
  • This test constantly measures SINAD while the signal generator drops the input power until the SINAD 12dB point is reached.
• SINAD Verification Test
  • This test verifies other SINAD operations.
• BER Test
  • This test performs BER measurement at 0, -1, -2, -3 and -4 dB from the sensitivity level.
• Image Rejection Test
  • This test verifies the proper image rejection.
• Packet Detection Test
  • This test adjusts the input signal until the packet detection circuitry triggers. Then slowly adjusts the signal until packet detection circuitry releases and record values.
• Adjacent Channel Selectivity Test
  • This test verifies adjacent channel selectivity.

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