A set of antenna-based heaters.

Input Format:

A set of one or more of:

• cryo - A heater in a receiver cryostat.
• ambient0 - One of two heaters outside the receiver cryostat.
• ambient1 - The second of two heaters outside the receiver cryostat.
• all - All of the above heaters.

Examples:

The following example requests that both ambient temperature heaters of receiver 0 be set such that the corresponding thermisters produce an output voltage of 3.03 volts.

  heater rx0, ambient0+ambient1, 3.03  

Context:

Variables of type Heaters are used by the heater() command.