- Frequency and Period Measurement
- High Resolution at Both High and Low Frequency
- 0.01Hz~2.7GHz Frequency Range(GFC-8270H)
- 10mV rms High Sensitivity
- 100nHz Resolution for 1Hz Input
- Variable Trigger Level Control
- Microprocessor Controlled Intelligent Counter(only GFC-8270H)
Description
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.
Specification
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DISPLAY |
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8 digits with Hz, kHz, MHz, GHz, s, ms, μs, and overflow |
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GATE TIME |
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Variable from 10ms to 10s, or 1 period of input depending on whichever is greater |
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ACCURACY |
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±(resolution ± timebase error) |
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CHANNEL A |
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Range |
DC coupling: 0.01Hz ~ 120MHz AC coupling: 30Hz ~ 120MHz |
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Sensitivity |
10mV typical, 50mV maximum |
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Coupling |
AC or DC, selectable |
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Filter |
Low pass, selectable in or out for channel A (-3dB point, nominal 100kHz) |
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Impedance |
1MΩ // 40pF |
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Attenuator |
1/1 or 1/20dB |
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Trigger Level |
-2.5VDC ~ +2.5VDC |
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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. |
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Display Accuracy |
7 digits for 1 sec gate time 6 digits for 100ms gate time 5 digits for 10ms gate time |
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Period Range |
8ns ~ 100ns (at least 7 digits displayed per gate time) |
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CHANNEL B |
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Range |
50MHz ~ 2.7GHz for GFC-8270H 50MHz ~ 1.3GHz for GFC-8131H |
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Sensitivity |
<50mVrms (10mVrms typical) for GFC-8270H <40mVrms (10mVrms typical) for GFC-8131H |
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Coupling |
AC only |
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TIME BASE |
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Aging Rate |
1ppm per month |
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Temperature |
5ppm, 23°C + 5°C |
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Line Variation |
0.005ppm for + 10% variation |
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POWER SOURCE |
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AC 100V/120V/220V/230V ±10%, 50/60Hz |
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DIMENSIONS & WEIGHT |
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230(W) × 95(H) × 280(D) mm Approx. 2.2kg |
Accessories
User manual x1, Power cord x1, GTL-110 x1, GTL-101 x1
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