GW Instek GFC-8131H User Manual
FREQUENCY COUNTER
FREQUENCY COUNTER
USER MANUAL
CONTENTS PAGE
1. PRODUCT INTRODUCTION......................... ........... ......... 1
2. TECHNICAL SPECIFICATION…………………………... 2
3. PRECAUTIONS BEFORE OPERATION…….…………...
3-1.Unpacking the Instrument………………….…………...
3-2.Checking the Line Voltage………………… ..……… … .
3-3.Equipment Installation and O peration……… …… …...
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4. PANEL INTRODUCTION……………………..…………… 6
5. APPLICATION………………………………………………. 9
6. MAINTENANCE……………………………………………..
6-1.Standard Method for Cal ibratio n………… ……………
6-2.Cleaning…………………………………………………...
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USER MANUAL
1. PRODUCT INTRODUCTION
The intelligent counters are measuring frequency and period from
the range of 0.01Hz to 120MHz on channel A, and 50MHz to
1.3(2.7)GHz on channel B.
The products also provide special features of high resolution and
sensitivity for value reading expediency.
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USER MANUAL
2. TECHNICAL SPECIFICATIONS
CHANNEL A
Range
Sensitivity
(rms)
Coupling
Filter
Impedance
Attenuator
Trigger Level
Damage Level
CHANNEL B
Range
Sensitivity
Coupling AC DC
FREQ A 30Hz to 120MHZ 0.01Hz to 120MHz
PRID A 8ns to 30ms 8ns to 100s
50mVrms Max. to 10kHz.
25mVrms Max. to 80MHz.
35mVrms Max. to 120MHz.
(If frequency ＜ 10MHz, sensitivity figures are for 4
stable digits of reading.)
AC or DC switchable.
Low pass, switchable in or out on channel A.
3dB point of nominally 100kHz.
1MΩ nominal shunted by less than 40pF.
×1 or ×20 nominal.
Variable between +2.5V DC and –2.5V DC.
AC & DC ×1
DC to 2.4kHz 250V(DC+AC rms)
2.4kHz to 100kHz 600kV rms Hz FREQ
＞100kHz 6V rms
AC & DC × 20
DC to 20kHz 500V(DC+AC peak)
20kHz to 100kHz 10MV rms Hz FREQ.
＞100kHz 100V rms
50MHz to 1.3GHz (GFC-8131H)
50MHz to 2.7GHz (GFC-8270H)
GFC-8131H GFC-8270H
25mVrms Max. to 80MHz 25mVrms Max. to 80MHz
15mVrms Max. to 700MHz 15mVrms Max. to 1GHz
25mVrms Max. to 1GHz 25mVrms Max. to 2GHz
40mVrms Max. to 1.3GHz 50mVrms Max. to 2.7GHz
Coupling
Impedance
Max. Input Level
General
Resolution
Time Base
Accuracy
Gate Time
Display
Operation
Temperature
Operation
Humidity
Power
Requirement
Dimension
Weight
Accessories
USER MANUAL
AC
50Ω
3Vrms sine wave
Gate time displays at least 7 digits for 1s, 6 digits for
100ms, 5 digits for 10ms respectively.
The maximum resolution for frequency measurement is
100nHz for 1Hz, and 0.1Hz for 100MHz input
respectively, and for period measurement is 10nS for
1Hz, 0.1fs (f=10
Frequency------------1 0M Hz
Aging Rate-----------1p pm per mo nth
Temperature----------5p pm, 23℃±5℃
Line Voltage---------±0. 005ppm for ±10% varia tio n
±Resolution ± Time base erro r.
Continuously vary from 10ms to 10s or 1 period of the
input depending on whiche ver i s greate r.
8 digits and overflow indicators
0℃~40℃
10~80% RH
100/120/220/230±10%, 50/60Hz selectable internally.
Max. consumption power is 15VA.
Approx. 230(W) × 95(H) × 280(D) m/m.
Approx. 2.0 kgs.
Instruction manual……………× 1
Power cord……………………× 1
Test lead GTL-101 …………..× 1
GTL-110 …………..× 1
-15
) for 100MHz input respectively.
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3.PRECAUTIONS BEFORE OPERATION
3-1.Unpacking the Instrument
The instrument has been fully inspected and tested before shipping from
the factory. Upon receivi ng the instrument, please unpack a nd inspect it
to check if there is any damages caused during transportation. If any sign
of damage is found, notify the bearer and/or the dealer immediately.
3-2.Checking the Line Voltage
The instrument can be applied any kind of line voltage show n in the ta ble
below. Please check the line voltage indicated in the label attached on the
real panel to replace correct fuses.
WARNING. To avoid electrical shock the power cord
protective grounding conductor must be connected to ground.
When line voltages are changed, replace the required fuses shown as below:
USER MANUAL
3-3.Equipment Installation, and Operation
Ensure there is proper ventilation for the vents in the case. If this
equipment is used not according to the specification, the protection
provided by the equipment may be impaired.
Line voltage Range Fuse Line voltage Range Fuse
100V
120V
90-110V
108-132V
WARNING. To avoid personal injury, disconnect the power
cord before removing the fuse holder.
T200mA
250V
220V
230V
198-242V
207-253V
T100mA
250V
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