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-300) or impedance (PLT-200 or PLT-300) 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-300 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-200 or PLT-300 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