| | | 产品介绍 |  |  
                          | Frequency  measuring range : 0.1Hz to 150MHz in A, B input and  50MHz ~ 1.5GHz in C input Trigger level adjustment for input A
 Separate and common mode selectable for input A and  B
 Period / Total measurement for input A
 Time interval and ratio measurement for input A and   B
 Slope mode selectable for input A and B
 9 digit display with 0.01mHz resolution in 1 sec.
 High sensitivity external reference input function  (higher than 20mVrms)
 Microprocessor controlled
 Reciprocal technique for high resolution at low   counting frequency
 Self check function executed to perform an automatic  self diagnosis of various counter function
 Push-scanning for selecting function and gate time
 Low-pass filter(100kHz, -3dB) installed for removing  noise signal in low frequency measuring
 AC/DC coupling function (selectable X1 / X10  attenuator)
 Data hold function
 Optional RS-232C serial interface function for  communication with computer
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                          | 产品功能描述 |  |  
                          | Display | 9  digit large green LED display(Overflow, gate time,   mHz, Hz, kHz, MHz, ns, µs, s, hold)
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                          | Range | 0.1Hz~1.5GHz |  
                          | Gate time | 0.01s, 0.1s, 1s, 10s |  
                          | Resolution | 1nH~10Hz |  
                          | Accuracy | 【  resolution 【 time base 【 1 count |  
                          | Terminal | A, B, C |  
                          | Sensitivity | 20mVrms A, B input / 30mVrms C input |  
                          | Impedance | 1Mз  < 40pF A, B input / 50з C input |  
                          | Max.  voltage | 250Vrms  A, B input / 3Vrms C input |  
                          | Attenuator | X 1, X 10 A, B input |  
                          | Slope  A, B | + or – selectable |  
                          | Trigger A | preset or variable |  
                          | Low  pass filter | 100kHz(-3dB)  A, B input |  
                          | Period | 10ms   ~ 10s range with 1ps ~ 1ns resolution / 【  resolution 【 trigger error 【 1 count accuracy
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                          | Totalize | 5Hz ~  30MHz range / 0 ~ 999999999(Max) |  
                          | RPM | 6 ~ 900 X 106 RPM |  
                          | Time interval (A ℃ B) | 1µs  ~10s range / 100ns LSD display/【 LSD 【 trigger  error resolution/ accuracy : 【 LSD 【 trigger error 【 timebase  error X time interval / 1, 10, 100,
 1000 multiplier
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                          | Ratio (A/B) | 0.1Hz  ~ 10MHz A input range, 0.1Hz ~ 10MHz B input range/  【 LSD 【 (trigger error X frequency A)/N resolution/  accuracy : 【 1count of A 【
 B trigger error 【frequency A
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                          | Operating  environments | 0∩~50∩ |  
                          | Range for guaranteed | 25∩【  5∩ |  
                          | Power requirement | AC   115 / 230V 【 10%, 50/60Hz |  
                          | Accessories | power cord, fuse, operation manual, BNC cable |  
                          | Factory optional sel | RS-232C interface / TCXO |  
                          | 产品特征 |  |  
                          | 长度 | 260mm |  
                          | 宽度 | 255mm |  
                          | 高度 | 80mm |  
                          | 产品持有证书 |  |  
                          |  | CE | 
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