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FC-2500A 掌上型計頻器
特色
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8位數液晶顯示器
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測量範圍(頻率)：10 ~ 2500MHz
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測量範圍(週期)：10 ~ 10MHz
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精確度： ±4ppm
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可記錄最大值’最小值及平均值
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讀值鎖定功能
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具有比較值(相對值)功能
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Size：173 X 80 X 35mm
FEATURES
► High sensitivity for the VHF & UHF frequency measurement, useful for the CB amateur.
► Handheld & pocket size instrument.
► Wide measuring range up to 2.6 GHz.
► Good resolution, 0.1 Hz min. display unit for 10 MHz range.
► Used the exclusive Microprocessor IC offered the intelligent function: Frequency, Period, Multi resolution, Data hold, Relative measurement, Data
record( Max., Min., Average reading).
► Auto power off & manual power off.
► LCD display for low power consumption & clear read-out even in bright ambient light condition.
► The instrument used the low PPM crystal time base to offer high accuracy measurement.
► The optional telescoping antenna accessory can be used to pick up transmit frequencies from handheld, fixed or mobile radios such as: POLICES, FIRE FIGHTER'S, HAM, TAXI, AIRCRAFT MARINE, etc. at ranges of approaching 5 to 30 cm(depending on transmitter power, antenna obstructions, etc.).
規格
顯示 (Display)
- 13mm (0.5") LCD (Liquid Crystal Display), 8 digits.
測量 (Measurement)
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Frequency, Data hold, Relative, Memory(max., min., average), Period.
範圍 (Range)
- 2500 MHz : 50 MHz to 2500 MHz(typical max. 2600 MHz)
100 MHz : 5 MHz to 120 MHz.
10 MHz : 10 Hz to 10 MHz
Period : 10 Hz to 10 MHz
解析度及取樣時間
| Range |
Gate Time Select |
Resolution |
Sampling Time |
| 2500 MHz |
FAST |
1000 Hz |
0.5 SEC |
| SLOW |
100 Hz |
2.75 SEC |
| SLOW(select 1) |
200 Hz |
1.5 SEC |
| SLOW(select 2) |
500 Hz |
0.75 SEC |
| 500 MHz |
FAST |
100 Hz |
0.75 SEC |
| SLOW |
10 Hz |
6 SEC |
| SLOW(select 1) |
20 Hz |
5 SEC |
| SLOW(select 2) |
50 Hz |
1.5 SEC |
| 10 MHz |
FAST |
10 H |
0.5 SEC |
| SLOW |
1 Hz |
1.25 SEC |
| SLOW(select 1) |
0.2 Hz |
6 SEC |
| SLOW(select 2) |
0.1 Hz |
11 SEC |
靈敏度 (Sensitivity) (Sensitivity Sw. set to high position)
- 2700 MHz range
- 50 mV rms. ( 100 MHz to 2.5 GHz ) ; Typical : 35 mV rms. ( 300 MHz to 2.4 GHz )
- 100 MHz range
- 50 mV rms. ( 10 MHz to 100 MHz ) ; Typical : 25 mV rms. ( 30 MHz to 100 MHz )
- 10 MHz & Period : 30 mV rms. ( 10 Hz to 10 MHz ) ; Typical : 15 mV rms. ( 10 Hz to 9 MHz )
最大功能信號輸入 (Max. functional signal input) (Sensitivity Sw. set to normal position)
- 2700 MHz range : 4 V rms. ( 400 MHz to 2.7 GHz )
- 100 MHz range : 4 V rms.
- 10 MHz & Period : 15 V rms.
過載輸入 (Over-input)
- 2700 MHz & 100 MHz range : Max. 4 V rms.
10 MHz & Period range : Max. 15 V rms.
時基穩定對應溫度 (Time Base Stability vs. Temp.)
- 1.5 PPM ( 10 to 30 ℃ ).
頻率精確度 (Frequency Accuracy)
- ± ( 2 PPM + 1 d ) 23± 5 ℃, after calibration.
時基電路 (Time Base circuit)
- 16.777216 MHz, TCXO (temperature compensated crystal oscillator).
輸入連接器 (Input Connector)
- 10 MHz & Period range : BNC connector.
- 100 MHz range : N coaxial connector.
- 2700 MHz : N coaxial connector.
箱體 (Case)
- Durable & strong ABS-plastic housing with handle.
操作溫度 (Operating Temp.)
- 0 to 50 ℃ ( 32 to 122 ℉ ).
操作溼度 (Operating Humidity)
- Less than 80 % R.H.
電源供應 (Power Supply)
- 6 x 1.5 V AA ( UM-3 ) battery or AC to DC 9V adapter.
電源損耗 (Power Consumption)
- 2700 MHz & 100 MHz range Approx. DC 105 mA.
10 MHz & Period range Approx. DC 45 mA.
交流變壓器電源輸入 (AC Adapter Power Input)
- Optional, 9V DC , 300 to 500 mA rating, central positive for socket.
體積 (Dimension)
- 280 x 210 x 90 mm ( 11.0 x 8.3 x 3.5 inch ).
重量 (Weight)
- 1200 g/0.27 LB (including battery).
附件 (Standard Accessories)
- Instruction Manual .............. 1 PC.
選購附件 (Optional Accessories)
- AT-20 ....Telescoping RF pick-up antenna with BNC connector.
PB-21 ....Direct probe with BNC connector & alligator clip pairs. (Be used only for the measuring frequency 500 MHz)
CA-03 ....Soft carrying case.
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