The DBS 901/901HV/901LM are high-speed (100 MHz), 14-bit, Arbitrary
Waveform Generator modules that plug into the Analogic DBS 9900 "C" size
VXI carrier module. Up to two DBS 901s 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 901 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.
The DBS 901, when combined with the DBS 9900 carrier module, provides ex-
tremely versatile clock and trigger sources via internal circuitry, front panel con-
nectors, and VXI TTLTRG or ECLTRG lines. The internal clock can drive all
plug-in function modules simultaneously so that clock skew and delays are re-
duced 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 901s. Programmable trigger and clock thresholds are also pro-
vided for each plug-in function module.
On-board waveform memory is segmentable and has branching and looping
capability, allowing generation of complex waveform sequences while minimiz-
ing the amount of memory required.
The VXI Plug & Play compliant software driver supports all functions of the DBS
901 and provides automatic recognition and configuration for all plug-in mod-
ules 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 environ-
ments. These drivers go beyond VXI Plug & Play requirements to ensure sys-
tem integration and software development time are reduced to an absolute min-
imum.
Features
1 MS/8 MS Segmentable Waveform
Memory with Branching and
Looping
Flexible Clock and Trigger Sources
Programmable Trigger and Clock
Thresholds
Calibration Signal Port
Self-Calibrating Gain & Offset
Built-In Self-Test
Applications
Semiconductor Device Testing
Video Signal Simulation
Digital Communications Signal
Simulation
Vibration Excitation
Research & Development
Ultrasound
Figure 1. DBS 9900 with Two DBS 9XX Boards (One Installed).
VXI Arbitrary Waveform Generator
Plug-In Module
Plugs into the Analogic DBS 9900 "C" size VXI Carrier Module
DBS 901/
901HV/901LM
bus
Printed in U.S.A.
2000, 2001 ANALOGIC Corporation
Bulletin No. 16-100678 REV 0 8/01
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
DBS 901/
901HV/901LM
Specifications
1
Ordering Guide
DBS 901
1M sample memory, 20V p-p output
DBS 901HV
1M sample memory, 30V p-p output
DBS 901LM
8M sample memory, 20V p-p output
ANALOG OUTPUT
Parameter
Conditions
Value
Number of
Single Ended
One
Channels
Impedance
Programmable
50
or 75
Output Voltage
Terminated output. Open
0.5V, 1.0V, 2V, 5.0V
Ranges
circuit range is 2X
901/901LM
terminated range
901HV
0.25V, 0.5V, 1.0V
2.0V, 4.0V and 7.5V
Crosstalk Rejection
Channel to Channel
>100 dB at 1 MHz
Absolute
0.5V range
>1%
Amplitude Accuracy
All other ranges
2%
(10 kHz to 50 MHz)
Slew Rate
(100 MS/s Clock,
Not Slew Rate Limited
50 MHz Output Signal)
DC Offset Accuracy
1% worst case
DC Offset
12 bits
Resolution
DC Offset Range
Terminated output. Open
2.5V Greater than
901/901LM
circuit range is 2X
full scale amplitude range
901HV
terminated range.
5V max.
Gain Trim Adjust
0 to 8 dB
Gain Trim
12 bits of FSR
Resolution
Amplitude Flatness
100 kHz to 50 MHz
1.5 dB
0 to 10 MHz
0.2 dB
Full scale output, 0V
offset. 0.5V and 1V
ranges. Slightly degraded
for 2V and 5V ranges.
Short Circuit/Over-
10 ms response time
200 mA min.
current Protection
Reconstruction
Filter
3rd order Bessel lowpass
None, 5 MHz or 20 MHz
SFDR
1 MHz output
80 dBc min.
10 MHz output
70 dBc
Full scale output, 0V
offset. 0.5V and 1V
ranges. Slightly degraded
for 2V and 5V ranges.
Peak Harmonic
1 MHz signal @ 0.5V
74 dBc max.
Distortion
with 0V offset.
Slightly degraded for
2V & 5V FSR.
TRIGGERS
Parameter
Conditions
Value
Internal
Set softwarebit
External
Via front panel inputs
See DBS 9900 specs.
Via VXI TTLTRG lines
Per VXI Specification
Latency=11 clock periods
Advance/Branch
Via front panel, TTL,
19 ns min. width
falling edge
CLOCK
Parameter
Conditions
Value
Internal
See DBS 9900 carrier
95 Hz to 100 MHz
module specs.
External
Also see DBS 9900
0 to 100 MHz
carrier module specs.
External Reference
Via front panel input
10 MHz
Clock
Also see DBS 9900
carrier module specs.
MARKERS
Parameter
Conditions
Value
Output available
Via front panel connector
2
and VXI TTLTRG
Width & position
Programmable
One clock period min.
resolution
STABILITY
Parameter
Conditions
Value
Offset Tempco
0.5V range
1 mV/C
Offset Gain Tempco
250 ppm/C of FSR
Waveform Gain
0V offset
250 ppm/C of FSR
Tempco
WAVEFORM DATA MEMORY
Parameter
Value
Coding & Format
Two's complement, 14 bit left justified
Size
1 MS for DBS901 & 901HV 8 MS for DBS 901LM
Segment Length
10 samples to 64 ks
Number of Segments
1 to 43,687
Looping
1 to 64k repetitions or continuous
Specifications subject to change without notice
Notes
1. All specifications are for modules installed in DBS 9900 carrier module unless
otherwise stated. Please refer to DBS9900 data sheet for power specifications.
RELIABILITY
Parameter
Conditions
Value
MTBF
Determined by the
>45,000 Hours
Generic Parts Count
method of MIL-HDBK-
217F for a Ground
Benign environment at
a temperature of 30C
ENVIRONMENTAL & MECHANICAL
Parameter
Conditions
Value
Ambient Operating
0C to +40C for rated spec.
Temperature Range
Storage
Non-condensing
25C to +75C
Temperature Range
Cooling Air Flow
For 10C Rise at 10 mm
4 litre/sec.
H2O back pressure
Relative Humidity
Non-condensing
90% max.
Vibration
Sinusoidal at 55 Hz
2G
Shock
11 ms half sine pulse
30G
Weight
5.0 oz (142g)
Size
8 in. x 4 in.,
(20.32 cm x 10.16 cm)
EMC & SAFETY AGENCY COMPLIANCE
Designed to meet all requirements for safety, RF emissions and immunity for mar-
keting in the U.S., Canada and Europe.
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