Electrical Measurements¶
Voltage¶
Use the measure command to test voltages on these PLT signals:
channel |
PLT Signal |
Method |
---|---|---|
|
DATP00 |
ADC |
|
DATP01 |
ADC |
|
DATP02 |
ADC |
|
DATP03 |
ADC |
|
DATP04 |
ADC |
|
DATP05 |
ADC |
|
DATP06 |
ADC |
|
DATP07 |
ADC |
|
DATP08 |
ADC |
|
DATP09 |
ADC |
|
DATP10 |
ADC |
|
DATP11 |
ADC |
|
DATP12 |
ADC |
|
DATPxx/DDTPxx |
DMM |
|
MUX0 |
ADC |
|
MUX1 |
ADC |
|
MUX2 |
ADC |
|
MUX3 |
ADC |
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:
channel |
Power Rail |
Method |
---|---|---|
|
1V8 |
ADC |
|
3V3 |
ADC |
|
5V |
ADC |
|
VARV |
ADC |
|
1V8, 3V3, 5V, VARV, 12V, or 24V |
DMM |
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.
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
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.
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.
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.
title: Measure CLK0 frequency
suite:
- title: Measure CLK0 frequency
steps:
- command: freq 0
- command: sleepms 1000
- command: measure frequency 32.75-32.78kHz
title: Measure CLK1 frequency
suite:
- title: Measure CLK1 frequency
steps:
- command: freq 1
- command: sleepms 1000
- command: measure frequency 7.90-8.10MHz
Commands