Atec Agilent-81618A - Manual (Page 42)

Performance Tests Performance Tests
42
Agilent 81618A/9A and Agilent 81622B/3B/4B/6B/7B/8B User’s Guide, Second Edition
The thermal characteristics of the sphere do not change from device to
device, or during the product lifetime. If a head without the sphere
passes the linearity test within the specifications given on the Test
Record Sheet, then the whole system - sphere and head - is within the
product specification.
The head and the integrating sphere of the 81628B are adjusted and
serialized together, therefore the specifications of the 81628B are only
valid for that given combination of head and integrating sphere.
The disconnecting and connecting of the integrating sphere may
change the performance verification data slightly.