Introduction
Loggers might have a switched and/or a permanent output power supply to power external sensors. These power supplies have the following specifications.
Switched power output (SPO)
The SPO is switched on shortly before and during a log. The on period before a log is specified by each input's configuration.
|
Parameter
|
Value
|
Comment
|
|---|---|---|
| Current |
150 mA 200 mA |
25% margin for component variations No margin; might not be reliable |
| Operating modes | Switched | Controlled by PIC |
| Voltage |
12 V ± 0.5 |
Devices can be ordered with an output voltage of 15 V Before January 2017 15 V was the default. |
Continuous power output (CPO)
The CPO is on continuously.
|
Parameter
|
Value
|
Comment
|
|---|---|---|
| Voltage | 5 V | |
| Current |
25 mA 50 mA |
@ 0.2 V dropout @ 0.4 - 0.7 V dropout |
| Operating modes | Permanently on |