Ư ¡ - Frequency and Period Measurement
- High Resolution at Both High and Low Frequency
- 0.01Hz~2.7GHz Frequency Range(GFC-8270H) - 0.01Hz~1.3GHz Frequency Range(GFC-8131H) - 10mV rms High Sensitivity - 100nHz Resolution for 1Hz Input - Variable Trigger Level Control
- Microprocessor Controlled Intelligent Counter (only GFC-8270H)
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The GFC-8000 Series performs virtually all of the counting measurements required in laboratories, in terms of both period and frequency. A bright red 8 digit LED display with an included overflow indicator provides a clear view. Both models feature a stable time base with a maximum resolution of 100nHz and 10nS at 1Hz for frequency and period measurement, respectively. Gate time can be configured for fast response (5 digits/10ms) or accuracy (7 digits/s) for more control. For high frequency needs, the GFC-8270H can operate at up to 2.7GHz. The GFC-8000 Series features easy operation with a simple front panel interface, suitable for both portable and bench-top use.
 »ó¼¼»ç¾ç GFC-8270H/8131H | DISPLAY | | 8 digits with Hz, kHz, MHz, GHz, s, ms, ¥ìs, and overflow | GATE TIME | | Variable from 10ms to 10s, or 1 period of input depending on whichever is greater | ACCURACY | | ¡¾(resolution ¡¾ timebase error) | CHANNEL A | Range | DC coupling: 0.01Hz ~ 120MHz AC coupling: 30Hz ~ 120MHz | Sensitivity | 10mV typical, 50mV maximum | Coupling | AC or DC, selectable | Filter | Low pass, selectable in or out for channel A (-3dB point, nominal 100kHz) | Impedance | 1M¥Ø // 40pF | Attenuator | 1/1 or 1/20dB | Trigger Level | -2.5VDC ~ +2.5VDC | Adjustment Resolution | For frequency measurement, the maximum resolution is 100nHz for 1Hz and 0.1Hz for 100MHz inputs respectively. For period measurement, the maximum resolution is 10ns for 1Hz input, and 0.1x10-15s for 100MHz inputs respectively. | Display Accuracy | 7 digits for 1 sec gate time 6 digits for 100ms gate time 5 digits for 10ms gate time | Period Range | 8ns ~ 100ns (at least 7 digits displayed per gate time) | CHANNEL B | Range | 50MHz ~ 2.7GHz for GFC-8270H 50MHz ~ 1.3GHz for GFC-8131H | Sensitivity | <50mVrms (10mVrms typical) for GFC-8270H <40mVrms (10mVrms typical) for GFC-8131H | Coupling | AC only | TIME BASE | Aging Rate | 1ppm per month | Temperature | 5ppm, 23¡ÆC + 5¡ÆC | Line Variation | 0.005ppm for + 10% variation | POWER SOURCE | AC 100V/120V/220V/230V ¡¾10%, 50/60Hz | DIMENSIONS & WEIGHT | 230(W) ¡¿ 95(H) ¡¿ 280(D) mm, Approx. 2.2kg |
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