Agilent Technologies 89410A Operator's Manual page 157

Using Wideband CDMA (Options B73, B79, and 080)
Trace B shows code-domain power for a single
code layer: code layer C6 (60 ksym/s). This
code layer has 64 code channels (codes 0 to 63
on the x-axis). Channels that are active in this
code layer are colored. Channels that are active
but not in this code layer are not colored.
Composite and single code-domain power displays
13 - 7