The recommended replacement product is the new 33522B Waveform Generator, 1-Channel 30 MHz with exclusive Trueform technology.
The Agilent 33522A is a 2-channel 30 MHz function / arbitrary waveform generator. The 33522A offers the highest signal fidelity and implements a breakthrough technology that provides you with the ability to generate more accurate arbitrary waveforms. With 10x better jitter than anything in its class, it offers unparalleled control of signal frequency for your most challenging measurements.
Unique to the 33522A model is a flexible, dual-channel mode with frequency and amplitude coupling, differential channels, and combined output channels. This functionality is particularly useful in applications where testing a device relies on the timing and interaction of two distinct signals to operate properly, such as a heart pacemaker.
HP / Agilent 33522A