> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lagerdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Electronic Load

> Control electronic load settings and modes

Control electronic load Nets through the Lager CLI. Electronic loads are used to simulate various load conditions for testing power supplies, batteries, and other power sources.

## Syntax

```bash theme={null}
lager eload [OPTIONS] NET_NAME COMMAND [ARGS]...
```

## Global Options

| Option      | Description                 |
| ----------- | --------------------------- |
| `--box BOX` | Lagerbox name or IP address |
| `--help`    | Show help message and exit  |

## Commands

| Command | Description                              |
| ------- | ---------------------------------------- |
| `cc`    | Set or read constant current mode (A)    |
| `cv`    | Set or read constant voltage mode (V)    |
| `cr`    | Set or read constant resistance mode (Ω) |
| `cp`    | Set or read constant power mode (W)      |
| `state` | Display electronic load state            |

## Command Reference

### `cc`

Set or read constant current (CC) mode in amps.

```bash theme={null}
lager eload NET_NAME cc [VALUE] [--box BOX]
```

**Arguments:**

* `VALUE` - Current value in amps. If omitted, reads current setting.

In CC mode, the electronic load maintains a constant current draw regardless of voltage changes.

**Examples:**

```bash theme={null}
# Set constant current to 2.5A
lager eload LOAD1 cc 2.5

# Read current CC setting
lager eload LOAD1 cc
```

### `cv`

Set or read constant voltage (CV) mode in volts.

```bash theme={null}
lager eload NET_NAME cv [VALUE] [--box BOX]
```

**Arguments:**

* `VALUE` - Voltage value in volts. If omitted, reads current setting.

In CV mode, the electronic load adjusts current to maintain a constant voltage at its terminals.

### `cr`

Set or read constant resistance (CR) mode in ohms.

```bash theme={null}
lager eload NET_NAME cr [VALUE] [--box BOX]
```

**Arguments:**

* `VALUE` - Resistance value in ohms. If omitted, reads current setting.

In CR mode, the electronic load behaves as a fixed resistance, with current varying according to Ohm's law (I = V/R).

### `cp`

Set or read constant power (CP) mode in watts.

```bash theme={null}
lager eload NET_NAME cp [VALUE] [--box BOX]
```

**Arguments:**

* `VALUE` - Power value in watts. If omitted, reads current setting.

In CP mode, the electronic load adjusts voltage and current to maintain constant power dissipation.

### `state`

Display the current state of the electronic load.

```bash theme={null}
lager eload NET_NAME state [--box BOX]
```

Returns information about the current operating mode, settings, and measurements.

***

## Examples

```bash theme={null}
# Set constant current mode to 1.5A
lager eload ELOAD1 cc 1.5 --box my-lager-box

# Set constant voltage mode to 5V
lager eload ELOAD1 cv 5.0

# Set constant resistance mode to 10 ohms
lager eload ELOAD1 cr 10.0

# Set constant power mode to 50W
lager eload ELOAD1 cp 50.0

# Check current state
lager eload ELOAD1 state
```

***

## Operating Modes

### Constant Current (CC)

The load draws a fixed current regardless of voltage:

* Use for testing power supply regulation
* Ideal for battery discharge testing
* Current remains stable as voltage varies

### Constant Voltage (CV)

The load maintains a fixed voltage at its terminals:

* Simulates a voltage-clamping load
* Useful for testing current-limited supplies
* Current varies to maintain voltage

### Constant Resistance (CR)

The load behaves as a fixed resistor:

* Current proportional to voltage (Ohm's law)
* Simulates resistive loads
* Natural response for many real-world loads

### Constant Power (CP)

The load maintains constant power dissipation:

* P = V × I remains constant
* Current increases as voltage drops
* Simulates switching power supplies and similar loads

***

## Supported Hardware

| Manufacturer | Model Series | Features                        |
| ------------ | ------------ | ------------------------------- |
| Rigol        | DL3000       | CC/CV/CR/CP modes, programmable |

***

## Notes

* Net names refer to names assigned when setting up your testbed
* Use `lager nets` to see available e-load nets
* Electronic loads can dissipate significant power; ensure adequate cooling
* Always verify load ratings before applying high power levels