README: Document units in clamped PWM value

README.md

@@ -107,10 +107,10 @@ formatted as line-delimited JSON.
 |-------------------------------------------|-------------------------------------------------------------------------------|
 | `report`                                  | Show latest report of channel parameters (see *Reports* section)              |
 | `output`                                  | Show current output settings                                                  |
-| `output <0/1> max_i_pos <amp>`            | Set maximum positive output current, clamped to [0, 2]                        |
-| `output <0/1> max_i_neg <amp>`            | Set maximum negative output current, clamped to [0, 2]                        |
-| `output <0/1> max_v <volt>`               | Set maximum output voltage, clamped to [0, 4]                                 |
-| `output <0/1> i_set <amp>`                | Disengage PID, set fixed output current, clamped to [-2, 2]                   |
+| `output <0/1> max_i_pos <amp>`            | Set maximum positive output current in Amperes, clamped to [0 A, 2 A]         |
+| `output <0/1> max_i_neg <amp>`            | Set maximum negative output current in Amperes, clamped to [0 A, 2 A]         |
+| `output <0/1> max_v <volt>`               | Set maximum output voltage in Volts, clamped to [0 V, 4 V]                    |
+| `output <0/1> i_set <amp>`                | Disengage PID, set fixed output current in Amperes, clamped to [-2 A, 2 A]    |
 | `output <0/1> polarity <normal/reversed>` | Set output current polarity, with 'normal' being the front panel polarity     |
 | `output <0/1> pid`                        | Let output current to be controlled by the PID                                |
 | `center <0/1> <volt>`                     | Set the MAX1968 0A-centerpoint to the specified fixed voltage                 |
@@ -120,8 +120,8 @@ formatted as line-delimited JSON.
 | `pid <0/1> kp <value>`                    | Set proportional gain                                                         |
 | `pid <0/1> ki <value>`                    | Set integral gain                                                             |
 | `pid <0/1> kd <value>`                    | Set differential gain                                                         |
-| `pid <0/1> output_min <amp>`              | Set lower limit of PID-regulated output current                               |
-| `pid <0/1> output_max <amp>`              | Set upper limit of PID-regulated output current                               |
+| `pid <0/1> output_min <amp>`              | Set lower limit of PID-regulated output current in Amperes                    |
+| `pid <0/1> output_max <amp>`              | Set upper limit of PID-regulated output current in Amperes                    |
 | `b-p`                                     | Show B-Parameter equation parameters                                          |
 | `b-p <0/1> <t0/b/r0> <value>`             | Set B-Parameter for a channel                                                 |
 | `postfilter`                              | Show postfilter settings                                                      |