| 53210A | 53220A | 53230A | |
| Standard Channels | Ch 1: DC to 350 MHz | Ch 1 and Ch 2: DC to 350 MHz | |
| Microwave channels (Option 106) | 100 MHz – 6 GHz or Option 115: 300 MHz to 15 GHz (includes pulse microwave measurement) | 100 MHz – 6 GHz or Option 115: 300 MHz to 15 GHz (includes pulse microwave measurement) | |
| Measurements | Frequency, period, frequency ratio, level | Frequency, period, frequency ratio, level | |
| Measurements | Time interval, single period, rise/fall time, pulse width, duty cycle, phase, totalize | Time interval, single period, rise/fall time, pulse width, duty cycle, phase, totalize | |
| Measurements | Continuous/gap-free and timestamp (MDA) | ||
| Pulse/burst microwave measurements | Carrier frequency, carrier period, pulse repetition interval (PRI), pulse repetition frequency (PRF), positive and negative width | ||
| Frequency resolution | 10 digit/s | 12 digit/s | |
| Time interval resolution | 100 ps | 20 ps | |
| Gate source | Time, external | Time, external, advanced (gate start, stop/hold-off time or events) | |
| Gate time (step size) | 1 ms to 1000 s (10 μs) | 100 μs to 1000 s (10 μs) | 1 μs to 1000 s (1 μs) |
| Graphical display | Digits, trend, histogram, limit test, markers | ||
| Analysis | Math: smoothing (reading moving average), scaling, Δ-change, null | ||
| Analysis | Statistics: mean, standard deviation, max., peak-to-peak, count; full color display for trendline, histograms | ||
| Analysis | Allan deviation | ||
| Memory | Volatile reading memory: 1M readings (16 MB); data log (automatically saves acquisition results to memory) save and recall user-definable instrument set-ups; USB file system | ||
| Connectivity | USB, LAN, GPIB (LXI) | ||