This is a quick reference guide for 8656B/8657A/8657B signal generators
This Quick Reference Guide provides concise operating instructions for the HP 8656B/57A/57B Synthesized Signal Generator. It includes power‑on and standby procedures, frequency, amplitude and modulation settings, as well as how to store, recall and modify front‑panel configurations.
The manual also contains safety warnings, such as using a 250 V line fuse and avoiding reverse power to the RF output, and details miscellaneous features like amplitude offset, HP‑IB address display, and instrument presets.
| Line fuse rating | 250 V fuse of the same rating |
|---|---|
| Reverse power protection | up to 50 W |
| Maximum DCFM input level | +15 Vdc |
| Uncalibrated output below | 100 kHz carrier frequency |
Select the correct line voltage, install the proper fuse, plug in the power cable, and press the POWER switch to the ON position.
Press the POWER switch to the STBY position; all settings and storage registers are saved in RAM and will be restored when the unit is turned back on.