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Part: DBS902
Category:
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Description:
Company: Analogic Corporation
Datasheet: Download DBS902 datasheet File size : 1040 kB
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DBS 902/ 902HV/902LM
VXI Waveform Digitizer Plug-In Module
Plugs into the Analogic DBS 9900 "C" Size VXI Carrier Module
The DBS 902/902HV/902LM are high-speed (80 MHz), 14-bit, Waveform Digitizer modules that plug into the Analogic DBS 9900 "C" size VXI carrier module. Up to two DBS 902s can be installed in a single DBS 9900. This mother/daughterboard concept allows a single VXI chassis slot to provide multiple functions, thereby maximizing VXI resources and decreasing the cost per slot. The DBS 902 provides a combination of speed and resolution that, until now, was not available and continues the Analogic tradition of providing the highest possible state-of-the-art performance at the lowest price available. Acquisition may be triggered from the input signal itself or external inputs having programmable thresholds. Acquired data can be pre-trigger, post-trigger or anywhere in between. A programmable sample counter that controls the number of data points to be acquired is also provided. The ability to tag sample(s) on the fly for purposes of identifying external events such as time stamps is available via a front panel digital input. The DBS 902, when combined with the DBS 9900 carrier module, provides extremely versatile clock and trigger sources via internal circuitry, front panel connectors, and VXI TTLTRG lines. The internal clock can drive all plug-in function modules simultaneously so that clock skew and delays are reduced to an absolute minimum. This allows coherent operation with other plug-in modules in the DBS 9XX series of digitizers and waveform generators as well as multiple DBS 902s. Trigger and clock thresholds are programmable for each plug-in function module. The VXI Plug & Play compliant software driver supports all functions of the DBS 902 and provides automatic recognition and configuration for all plug-in modules that are installed in the DBS 9900 carrier unit. Source code is included as well as .DLL files to allow easy porting to most popular programming environments. These drivers go beyond VXI Plug & Play requirements to ensure system integration and software development time are reduced to an absolute minimum.
Features
Over-Range Data Detection Multiple Clock and Trigger Sources Programmable Trigger and Clock Thresholds Auto Calibration Pre- and Post-Trigger Data Acquisition Data Dependent Triggering Programmable Sample Counter Sample(s) Tagging via Front Panel Input
Applications
Semiconductor Device Testing Digital Communications Testing Vibration Analysis Research & Development Ultrasound
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Figure 1. DBS 9900 with Two DBS 9XX Boards (One Installed).
Specifications1
ANALOG INPUT
Parameter Channels Full Scale Input Ranges Impedance Conditions Low (All) High (902, 902LM) High (902HV) Low range (All) High range (902, 902LM) High range (902HV) DC to 20 kHz @ ±0.5V input range All other input ranges up to 40 MHz Channel-to-Channel Low ranges High ranges High range (902HV) No filter, 1 dBfs @ 50, 80 MS/s Low input ranges (All): DC to 5 MHz 5 MHz to 30 MHz High input ranges: DC to 5 MHz 5 MHz to 30 MHz Software selectable, 3rd order Bessel Value One differential ±0.5V, ±1.0V and ±2.5V ±5.0V, ±10V and ±25V ±20V, ±40V, ±100V 50, 75 or 1 M 50, 75 or 100 k, 100 k 100 k 50 pF max. >=60 dB >=20 dB >100 dB ±3 VDC max. ±30 VDC max ±120V ±0.1% of full scale Parameter Coding & Format
DATA MEMORY
Conditions Bit 15 is sign, bits 14-2 are magnitude, bit 1 and bit 0 are used for data tagging via external inputs Value 2's complement or offset binary
INTERRUPTS
Parameter Level Interrupt Sources Conditions Programmable Programmable Value IRQ 1 through 7 Triggered Condition Done Condition Overrange Condition Diagnostic IRQ
Capacitance Common Mode
Crosstalk Rejection Overvoltage Protection Offset Frequency Flatness
RELIABILITY
Parameter MTBF Conditions Determined by the Generic Parts Count method of MIL-HDBK217F for a Ground Benign environment at a temperature of 30°C. Value >40,000 hours
±0.1 dB ±0.5 dB ±0.5 dB ±2 dB None, 20 MHz or 40 MHz ±3 LSB typ.
ENVIRONMENTAL & MECHANICAL
Parameter Conditions Value 0°C to +40°C for rated spec. 25°C to +75°C 4 litre/sec. 90% max. 2G 30G 5.0 oz (142g) 8 in. x 4 in., (20.32 cm x 10.16 cm) Ambient Operating Temperature Range Non-condensing Storage Temperature Range For 10°C Rise at 10 mm Cooling Air Flow H2O back pressure Relative Humidity Vibration Non-condensing Sinusoidal at 55 Hz 11 ms half sine pulse
Lowpass Filter Integral Non-Linearity DC Gain Accuracy Missing Codes
Within ±5°C from temp at autocal, ±0.5V range
±1% Guaranteed no missing codes
DYNAMIC CHARACTERISTICS
Parameter (S/[N+D]) Conditions 20 Hz to 30 MHz, 80 MHz low jitter clock Low input ranges High input ranges 20 Hz to 10 MHz, 80 MHz low jitter clock Low input ranges High input ranges 30 MHz bandwidth @ 50 source impedance Value
Shock Weight Size
65 dB typ., 61 dB min. 60 dB typ., 57 dB min.
SFDR
STABILITY
Parameter 68 dB min. 65 dB min. 200 µV RMS Max. Offset Tempco Gain Tempco Conditions Value 100 µV/°C max. ±250 ppm/°C typ.
Noise
EMC & SAFETY AGENCY COMPLIANCE CLOCK
Parameter Internal Conditions Value 10 kHz to 80 Mhz 10 kHz to 80 MHz See DBS 9900 carrier module specs. External Pipeline delay = 11 clock periods. Also see DBS 9900 carrier module specs. External Reference Via front panel input. Clock Also see DBS 9900 carrier module specs. Designed to meet all requirements for safety, RF emissions and immunity for marketing in the U.S., Canada and Europe.
CALIBRATION
Calibration is fully automatic via software driver provided. Calibration values are stored in on-board NVRAM.
10 MHz
Ordering Guide
DBS902 2 MS memory, 25V p-p input 16 MS memory, 25V p-p input 2 MS memory, 100V p-p input DBS902LM
Value See DBS 9900 specs. Per VXI Specification 8 bit programmable level and slope
TRIGGERS
Parameter Internal External Data Dependent Conditions Set software bit Via front panel inputs Via VXI TTLTRG lines Derived from a sequence of two level comparisons. Latency of 3 sample periods between first and second level. Also see DBS 9900 carrier module specs.
DBS902HV
1. All specifications are subject to change without notice. Please refer to DBS9900 data sheet for power specifications.
Analogic Corporation Test & Measurement Division 8 Centennial Drive Peabody, MA 01960-7987, USA Tel: (978) 977-3000 Fax: (978) 977-6814 email: t&m_info@analogic.com www.analogic.com
Printed in U.S.A. © 2000, 2001 ANALOGIC Corporation Bulletin No. 16-100679 REV 0 8/01
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