Electrical Measurements¶

Voltage¶

Use the measure command to test voltages on these PLT signals:

`measure` voltage channels¶
channel	PLT Signal	Method
`voltageDATP00`	DATP00	ADC
`voltageDATP01`	DATP01	ADC
`voltageDATP02`	DATP02	ADC
`voltageDATP03`	DATP03	ADC
`voltageDATP04`	DATP04	ADC
`voltageDATP05`	DATP05	ADC
`voltageDATP06`	DATP06	ADC
`voltageDATP07`	DATP07	ADC
`voltageDATP08`	DATP08	ADC
`voltageDATP09`	DATP09	ADC
`voltageDATP10`	DATP10	ADC
`voltageDATP11`	DATP11	ADC
`voltageDATP12`	DATP12	ADC
`voltageDMM`	DATPxx/DDTPxx	DMM
`voltageMUX0`	MUX0	ADC
`voltageMUX1`	MUX1	ADC
`voltageMUX2`	MUX2	ADC
`voltageMUX3`	MUX3	ADC

Example PLT test plan: Measure Voltages¶

title: Measure Voltages
suite:
- title: Measure DATPxx Voltages
  steps:
  - command: measure voltageDATP07 200-6000mV
  - command: measure voltageDATP08 -0.2-0.1V
  - command: measure voltageDATP09 0-4V
  - command: measure voltageDATP10 -0.1-3.3V
  - command: measure voltageDATP11 0-3.4V
  - command: measure voltageDATP12 -0.1-3.4V
- title: Measure MUXx Voltages
  steps:
  - command: mux 0 DATP00
  - command: mux 1 DATP01
  - command: mux 2 RATP00
  - command: mux 3 RATP17
  - command: measure voltageMUX0 >1V
  - command: measure voltageMUX1 <3300mV
  - command: measure voltageMUX2 >100mV
  - command: measure voltageMUX3 1500-1800mV

Example: Use DMM to measure voltage against GND4

title: "Measure voltage against GND4"
suite:
- title: Measure
  steps:
  - command: measure voltage DATP01 >6V
    ground: GND4

Commands

Voltage (differential)¶

Example: Measure differential voltage between DATP00 and DATP01

title: "Measure differential"
suite:
- title: Measure
  steps:
  - command: measure voltageDiff DATP00-DATP01 >10mV

Current Draw¶

Use the measure command with current draw on these power rails:

`measure` current channels¶
channel	Power Rail	Method
`current1V8`	1V8	ADC
`current3V3`	3V3	ADC
`current5V`	5V	ADC
`currentVARV`	VARV	ADC
`currentDMM`	1V8, 3V3, 5V, VARV, 12V, or 24V	DMM

Example PLT test plan: Measure Current Draw¶

title: Measure Current Draw
suite:
- title: Measure Currents
  steps:
  - command: measure current3V3 <1A
  - command: measure current5V 0.1-0.5A
  - command: measure currentVARV >100mA
  - command: measure currentDMM 1V8 <100mA
  - command: measure currentDMM 5V 0.1-0.5A

Note

The currentDMM measurement channel is only available on the PLT-300A.

Commands

Resistance¶

To measure resistance, use the measure command with the resistance (PLT-300A) or impedance (PLT-200A or PLT-300A) channel.

The resistance channel measures resistance between the specified signal and the current system ground or a specified ground.

The impedance channel measures between the RA an RVREF PLT signals, which must be connected to the signals of interest, before performing the measurement.

Example PLT-300A test plan: Measure Resistance¶

title: Measure Resistance
suite:
- title: Measure Resistance
  steps:
  # Measure resistance between DATP01 and system ground, with 3.3V reference
  - command: measure resistance DATP01 45-48kOhm 5V
  # Measure resistance between GND3 and DATP01
  - command: measure resistance DATP04 <50kOhm
    ground: GND3

Example PLT-200A or PLT-300A test plan: Measure Resistance¶

title: Measure Resistance
suite:
- title: Measure Resistance
  steps:
  - command: mux 0 RATP02
  - command: mux 1 RATP18
  - command: mux 2 RA
  - command: mux 3 RVREF
  - command: short 0 2 set
  - command: short 1 3 set
  - command: measure impedance 750-1000mOhm 3.3V
  - command: short 0 2 release
  - command: short 1 3 release
  - command: sleepms 1500
  - command: measure impedance 2-10Ohm 3300

Commands

Capacitance¶

To measure capacitance, use the measure command with the capacitance channel.

The capacitance measurement will be performed between the specified signal and ground. If no ground is specified, the system ground will be used.

Note

Capacitance measurement is only available on the PLT-300A.

Example PLT test plan: Measure Capacitance¶

title: Measure Capacitance
suite:
- title: Measure Capacitance
  steps:
  - command: ground 1
  - command: measure capacitance DATP01 <15nF
  - command: measure capacitance DDTP05 <150nF
  - command: measure capacitance DATP02 0.5-1.5uF
    ground: GND3

Commands

Digital¶

Use the measure command with the pin channel to test the value of digital inputs.

Example PLT test plan: Digital pin measurements¶

title: Digital pin measurements
suite:
- ident: ICT-T1
  title: Configure Digital pins as inputs
  steps:
  - command: pin RDTP21 input pullup
  - command: pin DDTP04 input
- ident: ICT-T2
  title: Read Digital pins
  steps:
  - command: measure pin RDTP21 low
  - command: measure pin DDTP04 high

Commands

Frequency¶

Use the measure command with the frequency channel to test measure frequency.

The frequency measurement will be performed on either the CLK0 or CLK1 PLT signal, which must be selected with the freq command, before performing the measurement.

Example PLT test plan: Measure CLK0 frequency¶

 title: Measure CLK0 frequency
 suite:
 - title: Measure CLK0 frequency
   steps:
   - command: freq 0
   - command: sleepms 1000
   - command: measure frequency 32.75-32.78kHz

Example PLT test plan: Measure CLK1 frequency¶

 title: Measure CLK1 frequency
 suite:
 - title: Measure CLK1 frequency
   steps:
   - command: freq 1
   - command: sleepms 1000
   - command: measure frequency 7.90-8.10MHz

Commands