LitePoint
z8451 300MHz I/Q 数字化仪 详细指标
双 ADC 400MS/s 同步采样 · 162.5MHz 无混叠带宽 · DDC + 分数重采样 · 512MiB 存储
详细指标
指标取自 LitePoint 官方技术规格书(PDF)。该型号官方已标注 Discontinued(停产),本站仍保留其页面与指标供存量系统参考。
端口说明
• I +,-:SMA | Differential baseband I input
• Q +,-:SMA | Differential baseband Q input
• EXT IN:SMA | External input for trigger or reference
• EXT OUT:SMA | External output for trigger, reference or event
Inputs
• 通道数:Two Differential Input Channels, I+/- and Q+/- (One I/Q)
• Input Impedance Single-ended Differential:50 Ω 100 Ω ≤ ±1% accuracy
• Input VSWR DC to 250 MHz:≤ 1.3:1
• Input Bias Current:≤ ±10 μA
• 连接器:SMA
• Absolute Maximum Input (no damage) Single-ended:-2 V to +5 V (DC + peak AC), CAT I
• Input Voltage Ranges:+10 dBm ( 2 Vppd) 0 dBm ( 0.63 Vppd) -10 dBm ( 0.2 Vppd) -20 dBm ( 0.063 Vppd)
• Input Voltage Range Accuracy (1 MHz):≤ ±0.05 dB at 25°C ambient ≤ ±0.01 dB drift per °C
• Input Offset Adjustment:±1 V 4 μV resolution
• Input Offset Accuracy:< ±(2 mV + 0.5% offset) at 25°C ≤ ±200 μV drift per °C
• Analog Bandwidth -3 dB Bandwidth Stopband Rejection:DC to 300 MHz ≥80 dB at 800 MHz
• Spurious-Free Dynamic Range (excluding harmonics):≥ 80 dBc at 10 MHz
• Harmonic Distortion:≥ 75 dBc at 10 MHz
• Intermodulation Distortion (2 tone, 10.6 MHz & 10.8 MHz):≥ 80 dBc
• I/Q Channel-to-Channel Match (DC to 50 MHz, same range settings):≤ 0.2 dB magnitude ≤ 0.5° phase
• I/Q Channel-to-Channel Isolation DC to 100 MHz 100 MHz to 250 MHz:≥ 90 dB ≥ 80 dB
Analog-to-Digital Converter (ADC) & Digital Downconverter (DDC)
• ADC Configuration:Simultaneous Sampling Dual ADC
• ADC Vertical Resolution:Bits 0.0061% of full-scale range
• ADC Clock Frequency:400 MS/s simultaneous sampling
• ADC Clock Jitter:≤ 300 fs RMS
• I/Q Data Vertical Resolution1:up to 32 bits 16-bit and 32-bit data formats
• I/Q Data Rate (flexible data rate with fractional resampling):123 S/s to 100 MS/s, 200 MS/s 400 MS/s (DDC Bypass) 1 Hz resolution
• I/Q Data Memory:512 MiByte total
• I/Q Waveform Size (matched I/Q sizes):up to 128 MiSamples (16-bit data) up to 64 MiSamples (32-bit data)
• I/Q Channel Mode (DDC input feed):I/Q quadrature input pair I input only Q input only Independent I and Q (real mixing)
• I/Q Instantaneous Bandwidth (alias-free):162.5 MHz, 100 Hz to 81.25 MHz 1 Hz resolution
• I/Q Resolution Bandwidth (RBW):Hz to 3 MHz 0.1 Hz resolution
• I/Q Center Frequency:Hz to 1 GHz 1 Hz resolution
时基参考
• Timebase Reference:10 MHz or 100 MHz
• Timebase Reference Source:Internal TCXO, External Input, Backplane
• Internal TCXO Timebase:±2.5 ppm accuracy
• Timebase Output:External Output
触发
• Trigger Source:I, Q, I/Q Envelope, External Input, Pattern, Software, Immediate (no trigger), TTL Trigger 0-7, Star Trigger
• Trigger Slope/Polarity:Positive or Negative
• Trigger Position:Pre-Trigger & Post-Trigger
• Trigger Jitter:≤ 2.5 ns peak-to-peak
外部输入(前面板)
• 功能:Trigger Input, Timebase Reference Input
• Absolute Maximum Input (no damage):≤ ± 5 V (DC + peak AC), CAT I
• Input Trigger Level Adjustment:-2 V to +2 V 0.5 mV resolution ≤ 20 mV accuracy 20 mV overdrive (input hysteresis)
• Input Bandwidth (-3 dB):≥ 250 MHz
• 输入阻抗:1 MΩ || 30 pF or 50 Ω ≤ ±2% accuracy
• 连接器:SMB
External Ouput (front panel)
• 功能:Trigger Output, Timebase Reference Output, Event Output, Programmable Clock Output, Programmable Pulse Output, Constant Level
• Output Event Source:Trigger Event, Capture Complete Event, Operation Complete Event, Master Summary Status Event
• 极性:High or Low Truth
• Programmable Event Pulse Width:50 ns to 163 ms
• Programmable Clock:Period: 26.667 ns to 100 seconds 13.333 ns resolution 50% Duty Cycle
• Programmable Pulse Pulse Repetition Interval Pulse Width:26.667 ns to 100 seconds, 13.333 ns resolution 26.667 ns
• Probe Compensation:10 kHz Clock which can be used to compensate probe
• Limit Test Successful:Event pulse after each capture upon limit or mask test success
• Output Level:TTL Compatible into ≥ 200 Ω ≥ ±24 mA Output Drive
• Output Enable:Tri-State Output Capability
• 连接器:SMB
背板触发
• 功能:Multi-Instrument Synchronization Trigger, Event Output Signals
• Triggers:TTL Trigger 0-7
• Direction:Input or Output
• Source:Trigger Event, Capture Complete Event, Operation Complete Event, Master Summary Status Event, Constant Level
• 极性:High or Low Truth
• Programmable Event Pulse Width:50 ns to 163 ms
Traces
• Trace Channels:Quantity 8
• Trace Size:Up to 512 KiSample 32-bit floating point data
• Trace Feed (source):Input Channels or Reference Channels
• Trace Type:Write (Live), Average, Max Hold, Min Hold (Reference Feeds use Write Type only)
• Trace Average Count:2 to 65535
• Trace Data Format:Linear Magnitude, Logarithmic Magnitude, Phase, Real, Imaginary, 32-bit floating point data
参考波形
• Reference Channels:Quantity 4
• Reference Storage:Non-volatile memory storage
• Reference Data:KiSample maximum waveform size 32-bit floating point data
• Reference Data Format:Linear Magnitude, Logarithmic Magnitude, Phase, Real, Imaginary, 32-bit floating point data
Markers
• Marker Channels:Quantity 2
• Marker Functionality:Waveform Trace Magnitude and Frequency Markers
• Marker Source:Trace 1-8
• Marker Peak Search Search Methods Selectable Search Options:Maximum, Next Maximum by Amplitude, Next Maximum Left, Next Maximum Right Absolute Threshold, Relative Excursion
数据处理与下载
• Self-Calibration:Automatic internal calibration: Input DC Offset Zero, Input DC Offset Adjust
• Waveform Data Formats:16-bit or 32-bit signed integer (I/Q time-domain data) 32-bit floating point (Trace or Reference data) Intel or Motorola Byte Order
仪器存储状态
• 功能:Non-volatile storage of instrument setup configuration
• Stored States:State 0 is Reset State Power-On State programmable
指示灯
• RDY (Ready):OFF: Hardware Failure ON: Unit has passed power-up self-diagnostics TOGGLE: Unit has an error pending in error queue
• TRG (Trigger):OFF: Trigger event not detected ON/PULSE: Trigger complete event detected TOGGLE: Device identify enabled
PXI 接口
• PXI Slot Compatibility:PXI Standard Slot and PXIe Hybrid Slot Compatible
• PXI Timing & Triggering Signals (XJ4 Connector):PXI_TRIG[0:7] input/output PXI_STAR input PXI_CLK10 input
PXIe 接口
• PXIe Slot Compatibility:PXI Standard Slot and PXIe Hybrid Slot Compatible
• PXI Timing & Triggering Signals (XJ4 Connector):PXI_TRIG[0:7] input/output PXI_STAR input PXI_CLK10 input
• PXIe Timing & Triggering Signals (XJ3 Connector):PXI_DSTARA input (unused PXI_STAR input PXI_CLK10 input
物理与环境
• 尺寸:Single-Wide 3U PXI/PXIe Instrument 8.25” x 0.79” x 5.25” (L x W x H) 20.96 cm x 2.01 cm x 13.34 cm (L x W x H)
• 重量:11.1 oz or 315 g
• 工作条件:0°C to +50°C ambient (MIL-PRF28800F Class 3)
• 存储:-40°C to +75°C (MIL-PRF28800F Class 3)
• Over-Temperature:Automatic shutdown if internal temperature exceeds +65°C
• Calibration Range:+20°C to +30°C ambient, after a 20 minute warm-up period, to meet all calibration specification accuracies
• Operating or Storage Up to +30 °C +30 °C to +40 °C above +40 °C:5 to 95% ± 5% non-condensing 5 to 75% ± 5% non-condensing 5 to 45% ± 5% non-condensing
• 工作条件:Up to 5 km
• 存储:Up to 15 km
资源下载
以上规格取自 LitePoint 官方技术规格书(PDF)与官网产品页;标注「典型」的为厂家典型值。
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