ELAN Home Systems ES370 manual Static Performance

Isolation rating:

Transient isolation24: Isolation capacitance25:

300V CAT II, 500V CAT I between BNC ground and USB ground

BNC ground to USB ground +/-2.5KV

1000pF typ between BNC ground and USB ground

Maximum Measured Voltage: Between BNC center and BNC ground: +/-30V.

Absolute Maximum Input Voltage26: Between BNC center and BNC ground: +/-50V.

4.4.2 Static Performance

Input DC resistance:	1Meg Ohm ±2%
Input capacitance:	16pF ±10% at 1MHz
Range accuracy:	+/-0.3V range:	±4%
	+/-3.0V range:	±6%
	+/-30.0V range:	±6%
Input coupling modes:	AC, DC, GND
ADC vertical resolution:	8bit
Channel offset error:	±2% of range
Channel offset control:	±100% of range, approx 7bit resolution
Buffer depth:	3000 points
Pre-triggering:	Up to 99% of buffer depth27
Post-triggering:	Up to 100% of buffer depth27
Triggering:	Auto, normal, rising edge, falling edge, greater,
	less
Trigger delay:	From 0 to 65535 sample periods27
Trigger range:	±100% of range, approx 7bit resolution

24This figure derives from the 300V CAT II isolation rating and defines the peak transient voltage that can be safely tolerated between the BNC ground and the USB ground.

25This capacitance causes the impedance across the isolation barrier will reduce with frequency. This is only significant if an AC component is impressed between the BNC ground and the USB ground that is referenced to the USB ground. At 50/60Hz this impedance is approximately 3MegOhms.

26This level will saturate the scope input, and is the maximum that can be applied without causing damage to the scope. It applies regardless of the input attenuator or coupling setting.

27Single shot mode only

Elan Digital Systems Ltd. 38 USBscope50 USER’S GUIDE Iss5