Electrical Characteristics for Balanced Double-Current Interchange Circuits
for General Use With I...
1. Scope
1.1 This Standard specifies the electrical characteristics of the
generator, receiver and interconnecting leads of a differential
signalling (balanced) interchange circuit operating with data
signalling rates up to 10 Mbit/s incorporating an optional dc offset.
The Standard is applicable only to integrated circuit equipment and
does not…
Installation Requirements for Air-to-Air Heat Pumps
1. Scope
1.1 This Standard covers the installation requirements for unitary air-to-air heat pumps with cooling mode ratings up to 19 kW (65 000 Btu/h), normally used with electricity, oil, or gas as the supplementary heating source.
1.2 This Standard covers unitary air-to-air heat pumps for new installations and heat pumps installed as part of an existing heating system.
1.3…