Racal
Racal 1998
10Hz-1.3GHz Frequency Counter
10 Hz to 160 MHz Frequency Range
0.1 Hz Frequency Resolution
±1 ppm per year aging rate Timebase Accuracy
1 MΩ / 50 Ω selectable Input Impedance
25 mV RMS (50 Ω), 100 mV RMS (1 MΩ) Sensitivity
| Attribute | Value |
|---|---|
| Frequency Range | 10 Hz to 160 MHz |
| Frequency Resolution | 0.1 Hz |
| Timebase Accuracy | ±1 ppm per year aging rate |
| Input Impedance | 1 MΩ / 50 Ω selectable |
| Sensitivity | 25 mV RMS (50 Ω), 100 mV RMS (1 MΩ) |
| Gate Time | 1 ms to 10 s |
| Display | 8-digit LED display |
| Measurement Functions | Frequency, Period, Totalize, Ratio |
| Power Supply | 90–250 V AC, 48–66 Hz |
| Interface | IEEE-488 (GPIB) remote control interface |
| Model | 1998 |
|---|
Counter 2 channels, 10Hz to 160MHz and 40Hz to 1300MHz.
