Kenwood(日本健伍)VT-176 2CH AC Voltmeter(2通道雙針交流毫伏表)是一款常規的產品,以前在電子廠做暑期工時見過,一般都放在生產線上作調校之用,那時候數字顯示的儀器很少見。一般的指針式儀器反應都比數字儀器快,而且容易直接感受動態轉變,所以指針式儀器仍有存在價值,筆者還有 Sanwa YX360TRF 指針式萬用表(Multimeter)作修理和測量使用,感覺萬用表反應比較快,但數字顯示的儀器相對比較準確。
Kenwood (日本健伍)VT-176 2CH AC Voltmeter(2輸入雙針交流毫伏表) |
Kenwood (日本健伍)VT-176 2CH AC Voltmeter(2輸入雙針交流毫伏表)正面 |
VT-176 面板按鈕功能(Front Panel Function Control) |
Kenwood (日本健伍)VT-176 2CH AC Voltmeter(2輸入雙針交流毫伏表)的背面 |
VT-176 背板插座功能(Rear Panel Connector Function) |
交流毫伏表使用方法:
1‧測量前應短路調零,打開電源開關,將測試線兩端短路,將量程旋鈕旋到 1mV 量程,指針應指在零位。若指針不指在零位,按 GND MODE 以確定測試線是否斷路或接觸不良。
2‧接上測試信號前,先將量程旋鈕旋到最大量程,然後再逐漸減小量程,直至容易觀察的量程。 1‧測量前應短路調零,打開電源開關,將測試線兩端短路,將量程旋鈕旋到 1mV 量程,指針應指在零位。若指針不指在零位,按 GND MODE 以確定測試線是否斷路或接觸不良。
3‧由於靈敏度較高,不用時按 GND MODE將輸入接地,防止受外來信號干擾。
型號:Kenwood(日本健伍)VT-176 2CH AC Voltmeter(2輸入雙針交流毫伏表)
型號:VT-176
Meter Section(CH1/CH2)
Measurable Voltage:0.3mV ~ 100mV in 12 ranges:0.3,1,3,10,30,100,300mV,1,3,10,30,100V full scale
dB:-90 ~ +40dB(0dB=1V)
dBm:-90 ~ +42dBm(0dBm=1mW at 600Ω)
Error:Within ±3% of full scale at 1kHz
Frequency response:±10% at 5Hz ~ 1MHz,±5% at 10Hz ~ 500kHz,±3% at 20Hz ~ 200kHz and ±2% at 30Hz ~ 100kHz referenced to 1KHz response。
Input impedance:10MΩ±5%,with less than 45pF parallel capacitance。
Max. input voltage:500V(DC +AC peak) 1V to 100V range,100V(DC +AC peak) 0.3mV to 300mV range。
Stability:Within ±0.5% of full scale for ±10% line voltage fluctuation
Residual Voltage:Less than 30 μV with input shorted on 0.3mV range
Crosstalk Individual:Less than -80dB with other input terminated with 600Ω
Crosstalk Interlock:Less than -50dB with other input terminated with 600Ω
Amplifier Section
Gain:Approx. 70dBOutput
Voltage:1Vrms(full scale) ±20%
Output Resistance:600Ω±20% at 1kHz
Distribution:Less than 1% at full scale(Rated by signal noise ratio in 1mV and 1V ranges)
Signal to Noise Ratio:Over 40dB at full scale. (Over 30dB at 0.3mV range)
Frequency Response:Within ±3dB at 5Hz ~ 500kHz
Connector:BNC
Input and Output
Environmental
Coefficient:±: 0.08%/°C
Temperature:Within specifications : 10 ~ 40°C,Full operation : 0 ~ 50°C
Relative humidity:Less than 80%
Maximum altitude:2000m
Overvoltage Category:II
Pollution Degree:2Power Supply Section
Line voltage:100/120/220/230 Vac ±10% 50/60Hz
Power consumption:Max. 11W
Dimensions:128(138) × 190(212) × 238(268) Value in ( ) include protrusions W×H×D (mm)
Net Weight:Approx. 3.0 kg
Accessories
Power cable:1 pc
Input cable:CA-41p 2 pcs
Replacement fuse:1 pc
Instruction manual:1 copy
Adjust driver:1 pc
EMI:EN55011 (1991) CLASS B
Immunity:IEC801-2 (1991) 8kVAD,IEC801-3 (1984) 3,IEC801-4 (1988)
2016年 1月 14日 天氣報告
氣溫:16.5度 @ 22:50
相對濕度:百分之 82%
天氣:雨
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