ALFA Electronics

GDS-840C 250MHz, 100MS/s, RS-232, Color Display Oscilloscope
[GDS-840C]

$1,375.00

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* 250MHz Bandwidth with Color LCD Display
* 125k Long Memory and 12 Division Horizontal Display
* 25Gsa/s Sampling Rate for Repetitive Waveforms
* 15 Auto Measurement Functions to get quick and accurate results
* Advance Trigger: Pulse Width, TV-Line, Event Delay and Time Delay
* GO-No Go, Learn Mode and Auto Setup Sequence
* FFT Function
* Standard Interface: USB, RS232, Printer Port
* GPIB Interface (Optional $240)

Display System	Display Device	Color (320*240) 5.7" LCD
	Display Contrast	Adjustable
	Waveform Display Graticule	8 x 10 divisions (8 x 12 div, when menu off)
	Display Mode	Dot, Vector, Accumulate
Vertical System	Bandwidth (-3dB)	DC~250MHz
	Channels	2
	Resolution	8 bit
	Sensitivity	2mV/DIV ~ 5V/DIV
	Accuracy	±3%
	Rise Time	<1.4ns
	Input Coupling	AC, DC, GND
	Input Impedance	1MΩ ± 2%, ~22pF
	Polarity	Positive& Negative
	Maximum Voltage Between Signal and Common at input BNC	300V (DC + AC peak), CAT II
	Waveform Signal Process	CH1-CH2, CH1+CH2, FFT
	Offset Range	2mV/div ~ 50mV/div: ±0.5V 100mV/div ~ 500mV/div: ±5V 1V/div ~ 5V/div: ±50V
	Bandwidth Limit	20MHz (-3dB)
Horizontal System	Range	1nS/DIV ~10S / DIV Roll: 250mS/DIV ~ 10S/DIV (1-2-5 increments)
	Modes	MAIN, WINDOW, WINDOW ZOOM, ROLL, X-Y
	Accuracy	±0.01%
	Delay Range	Pre-trigger: 20 DIV Post-trigger: 1000 DIV
Signal Acquisition System	Real-time Sample Rate	100MSa/s maximum on each channel
	Equivalent Sample Rate	25GSa/s maximum on each channel
	Record Length	125k / CH
	Peak Detection	10nS (500nS/DIV ~ 10S/DIV)
	Acquisition Mode	Sample, Peak Detect, Average
	Average	2, 4, 8, 16, 32, 64, 128, 256
Trigger System	Source	CH1, CH2, LINE, EXT
	Modes	AUTO-LEVEL, AUTO, NORMAL, SINGLE, TV, TIME DELAY, /EVENT DELAY, EDGE, PULSE WIDTH
	Coupling	AC, DC, LF rej, HF rej, Noise rej
	Sensitivity	DC ~ 25MHz: 0.35 DIV or 3.5mV 25MHz ~ 250MHz: 1.5 DIV or 10mV
External Trigger	Range	±15V
	Sensitivity	DC ~ 30MHz: 50mV 30MHz ~ 100MHz: 100mV 100MHz ~ 250MHz: 150mV
	Input Impedance	1MΩ ± 2%, ~22pF
	Maximum Input	300V (DC + AC peak), CAT II
X-Y Mode	X-Axis Input / Y-Axis Input	Channel 1 (CH1) / Channel 2 (CH2)
X-Y Mode	Phase Shift	±3° at 100kHz
Cursor & Measurement	Automated Voltage Measurement	Vhi, Vlo, Vmax, Vmin, Vpp, Vavg, Vrms, Vamp
	Automated Time Measurement	Rise Time, Fall Time, Duty Cycle, Frequency, Period, Positive Width, Negative Width
	Cursor Measurement	Voltage difference between cursors (ΔV) time difference between cursors (ΔT) Frequency difference between cursors (1/ΔT)
Frequency Counter	Readout Resolution	6 digits
	Range	AC Coupled, 10Hz minimum to rated bandwidth
	Signal Source	All available trigger source except the Pulse Width & Video Trigger mode
Control Panel Functions	Autoset	"Autoset" adjust vertical (volt/DIV), horizontal (sec/DIV), and trigger level automatically
	Save/Recall	Up to 15 sets of measurement conditions can be saved and recalled
	Waveform Trace Save/Recall	2 sets of waveform can be saved and recalled
Interface	USB Interface	Standard
	RS-232 Interface
	Printer port
	Go-No Go Output
	GPIB Interface	Optional
Power Source	Line Voltage Range	100V ~ 240V AC, automatic selection
	Line Frequency	48Hz ~ 63Hz
	Power Consumption	85Watts, 95VA maximum, with fan
Accessories	Power cord, Instruction manual, GTP-250A Probes(10:1/1:1) x 2
Dimensions	10.00"W X 5.59"H X 12.20"D
Weight	9.04 lbs

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