Vertilon SIB2316 User manual

User Guide
Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
SIB2316
2 x 16 Channel SiPM Interface Board
SensL SPMArray2

User Guide
Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Disclaimer
Vertilon Corporation has made every attempt to ensure that the information in this document is accurate and complete.
Vertilon assumes no liability for errors or for any incidental, consequential, indirect, or special damages including,
without limitation, loss of use, loss or alteration of data, delays, lost profits or savings, arising from the use of this
document or the product which it accompanies.
Vertilon reserves the right to change this product without prior notice. No responsibility is assumed by Vertilon for any
infringements of patents or other rights of third parties which may result from its use. No license is granted by implication
or otherwise under the patent and proprietary information rights of Vertilon Corporation.
Copyright Information
© 2011 Vertilon Corporation
ALL RIGHTS RESERVED

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Table of Contents
General Safety Precautions........................................................................................................................7
Product Overview.......................................................................................................................................8
Typical Setup............................................................................................................................................10
Detector Common Anode Bias.................................................................................................................11
SPMArray2 Cathode Connections............................................................................................................12
Pulse Preamplifiers...................................................................................................................................12
Zero Slope Discriminator..........................................................................................................................14
Coincidence Detector...............................................................................................................................15
Setup........................................................................................................................................................16
Specifications............................................................................................................................................18
Top and Bottom Views..............................................................................................................................20
Component Locations and Functions .......................................................................................................21
SIB Connector Pinout...............................................................................................................................23
Mechanical Information.............................................................................................................................24

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
List of Figures
Figure 1: Functional Block Diagram...........................................................................................................9
Figure 2: Typical Setup............................................................................................................................10
Figure 3: PhotoniQ Pre-Trigger Timing....................................................................................................10
Figure 4: SPMArray2 / SIB2316 Connections..........................................................................................11
Figure 5: SIB2316 Dialog Box .................................................................................................................13
Figure 6: Zero Slope Discriminator Timing ..............................................................................................14
Figure 7: Coincidence Detector Timing....................................................................................................15
Figure 8: Top and Bottom Views..............................................................................................................20
Figure 9: Component Locations and Functions.......................................................................................21
Figure 10: SIB2316 Printed Circuit Board Dimensions............................................................................24
List of Tables
Table 1: Specifications.............................................................................................................................19
Table 2: Connectors................................................................................................................................22
Table 3: LEDs and Switches....................................................................................................................22
Table 4: Test Points.................................................................................................................................22
Table 5: Connector J3: Sensor Interface Board (SIB)..............................................................................23

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
General Safety Precautions
Use Proper Power Source
The SIB2316 is powered with a +5V power source directly from Vertilon’s PhotoniQ multi-channel data acquisition
systems. Use with any other power source may result in damage to the product.
Operate Inputs within Specified Range
To avoid electric shock, fire hazard, or damage to the product, do not apply a voltage to any input outside of its specified
range.
Electrostatic Discharge Sensitive
Electrostatic discharges may result in damage to the SIB2316. For these reasons, the SIB2316 board is intended to be
operated in a user’s conductive instrument enclosure.
Do Not Operate in Wet or Damp Conditions
To avoid electric shock or damage to the product, do not operate in wet or damp conditions.
Do Not Operate in Explosive Atmosphere
To avoid injury or fire hazard, do not operate in an explosive atmosphere.

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Product Overview
The SIB2316 silicon photomultiplier (SiPM) interface board provides the mechanical and electrical connectivity between
two SensL 16 element SPMArray2s and external signal processing electronics such as a Vertilon PhotoniQ multichannel
data acquisition system. Each SPMArray2 connects to the SIB2316 through a 39 pin FPC cable connector that carries
the 16 SiPM detector channels and the common anode negative high voltage bias. Two additional FPC cable connectors
on the backside of the board allow the user to reverse-mount the SPMArray2s if necessary. The 32 detector signals from
the SiPM arrays are routed to a connector on the top of the board that connects to a specialized high density coaxial
cable assembly (SIB cable). This arrangement allows the SIB2316 to be conveniently mounted into the user’s optical
setup with the FPC cables connecting to the SPMArray2s and the SIB cable connecting to the data acquisition system.
The SIB cable carries the detector signals from the silicon photomultipliers to the PhotoniQ where the charge from each is
separately integrated, digitized, and sent to a PC for display or further signal processing. The negative high voltage bias
to the SPMArray2s is generated on the SIB2316 and can be trimmed for matching the two arrays. For applications such
as PET imaging that require pulse timing pickoff, circuitry included within the high voltage bias generator monitors the
total current delivered to the 16 elements of each SPMArray2. A preamplifier and discriminator on each array process the
current signals and feed the results to coincidence detection logic where a trigger signal is output when a pulse from each
discriminator is detected within a user-programmable time-coincidence window. Several user adjustments are included
for optimizing system gain, energy level thresholds, and the coincidence detection window width. The full functionality and
operation of the SIB2316is conveniently controlled through the PhotoniQ’s graphical user interface. Intelligent software in
the PhotoniQ constantly monitors the status of its SIB connectors to determine the type of sensor interface board
attached to them. Once recognized, a dialog box specific to the recognized SIB is made available in the GUI through
which the user has complete control over its operation.
The various functions on the SIB2316 are described in greater detail on the following pages. When necessary, refer to
the functional block diagram shown in Figure 1 on the next page.
•Interface board for two SensL SPMArray2 4 x 4 silicon photomultipliers
•Provides 32 channel interface to data acquisition systems
•High speed preamplifiers & discriminators for pulse detection
•Adjustable discriminator gain and energy threshold
•Programmable coincidence detection to less than 5 nsec
•Threshold crossing and coincidence indicator LEDs
•On-board negative high voltage supply for SiPM bias
•100% compatible with Vertilon’s PhotoniQ multichannel DAQs
•No external power supply required
•Sim
p
lified control throu
g
h PhotoniQ
g
ra
p
hical user interface

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Figure 1: Functional Block Diagram
VERTILON SIB2316
DUAL SENSL SPMArray2
SENSOR INTERFACE BOARD
PREAMP A
TRIGGER
OUTPUT
J3
SIB CONNECTOR
HIGH
VOLTAGE
BIAS
J7
J6
SENSL SPMArray2
16 ELEMENT
SILICON
PHOTOMULTIPLIER
IN01
VBIAS
IN02
IN03
IN04
IN05
IN06
IN07
IN08
IN09
IN10
IN11
IN12
IN13
IN14
IN15
IN16
SENSL SPMArray2
16 ELEMENT
SILICON
PHOTOMULTIPLIER
IN01
VBIAS
IN02
IN03
IN04
IN05
IN06
IN07
IN08
IN09
IN10
IN11
IN12
IN13
IN14
IN15
IN16
CHANNELS 1-16
CHANNELS 17-32
VBIAS A ADJ
VBIAS A
HIGH
VOLTAGE
BIAS
VBIAS B ADJ
VBIAS B
PREAMP
CURRENT
MONITOR
CURRENT
MONITOR PREAMP B
J8
COINCIDENCE
DETECTOR
COINCIDENCE
WINDOW
GAIN
ADJUST
DISCRIMINATOR
THRESHOLD
BANDWIDTH
ZERO SLOPE /
LEADING EDGE
DISCRIMINATOR
PREAMP
DISCRIMINATOR
THRESHOLD
J1/J9
SPMArray2 A CONNECTOR
J2/J10
SPMArray2 B CONNECTOR
CONTROL
ZERO SLOPE /
LEADING EDGE
DISCRIMINATOR
GAIN
CONTROL B
CONTROL A
16 CHANNEL
AC COUPLING
NETWORK
16 CHANNEL
AC COUPLING
NETWORK

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Typical Setup
A typical setup using a SIB2316 and two SensL SPMArray2 silicon photomultiplier arrays is shown below. The
SPMArray2s are positioned to detect incoming light from a scintillator crystal or optical assembly and connected to the
SIB2316 by two FPC cables. The sensor interface board cable connects the 32 detector outputs from the SIB2316 to a
Vertilon PhotoniQ IQSP480 or IQSP580 32 channel data acquisition system. The trigger output from the SIB2316
supplies the trigger to the PhotoniQ when coincident pulses exceeding a user-programmed energy threshold are detected
on the SPMArray2 devices. Alternatively, the coincidence function can be bypassed altogether and the PhotoniQ
triggered when a single pulse on either device exceeds the energy threshold. Digitized output data from the PhotoniQ is
sent to a PC over a USB 2.0 connection for display, logging, or real time processing. Bias to the detectors as well as the
SIB2316 discriminator and coincidence detection parameters are adjusted through the PhotoniQ graphical user interface.
In the figure below, the PhotoniQ GUI is set to display a dual 4 x 4 image of the energy levels for each event captured.
Figure 2: Typical Setup
In a PET application, the PhotoniQ is configured in pre-trigger mode whereby the unit can capture charge data from the
detectors that occurred prior to the trigger signal. This powerful triggering mode allows the data acquisition unit to be
timed to the pulse peaks yet still collect all of the charge from the particle event — including the charge that preceded the
peak of the event. Timing for this mode is shown below.
Figure 3: PhotoniQ Pre-Trigger Timing
TRIGGER
INTEGRATION
WINDOW
CHARGE
SIGNAL
EVENT
INTEGRATION
AREA
TRIGGER
POINT
FINAL LEVEL
EQUALS TOTAL
ENERGY FROM
EVENT
WINDOW SET RELATIVE
TO TRIGGER POINT
AND MATCHES
EVENT PULSE WIDTH

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Detector CommonAnode Bias
The SIB2316 is specifically designed to operate with SensL SPMArray2s having a common anode for detector bias.
These devices have 16 separate cathode outputs that are compatible with the PhotoniQ charge sensitive preamplifier
inputs. Since the SIB2316 biases the detector cathodes at ground voltage, a negative voltage is required on the detector
common anode so that an overall reverse bias is applied to the individual SiPM devices in the SPMArray2. It is therefore
extremely important that only SensL common anode SPMArray2s are used with the SIB2316. Common cathode or other
configurations will not operate with the SIB2316 and may cause permanent damage to it or the device itself.
The figure below illustrates how the detector bias is applied to a common anode SPMArray2 by the SIB2316. Since the
SIB2316 supports up to two SPMArray2s, the board contains two instances of the circuitry shown in the figure. An FPC
cable for each SPMArray2 carries the 16 cathode signals and common anode signal to the SIB2316. A negative high
voltage bias generator on the SIB2316 provides an adjustable bias (VBIAS) to each array. The monitor points P3 and P4
should be used when adjusting the bias voltages to SPMArray2 A and SPMArray2 B, respectively.
Figure 4: SPMArray2 / SIB2316 Connections

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
SPMArray2 Cathode Connections
Connection to the SPMArray2 device A and device B can be made using top-side FPC connectors J1 and J2
respectively. These connectors allow the SPMArray2s to face downward when connected to the SIB2316. Alternatively, if
the optical setup requires that the SPMArray2s face upward, then the bottom-side FPC connectors J9 and J10 can be
used. Regardless of the connectors used, the 16 cathode signals (IN01 – IN16) from each SPMArray2 are routed on the
SIB2316 to SIB connector J3 as shown in Figure 4. The cathode signals from device A are AC coupled and map to inputs
P1 through P16 on the connector, and likewise cathode signals from device B are AC coupled and map to inputs P17
through P32. The SIB connector mates to a proprietary low-noise, high density SIB cable assembly that carries the
detector signals on coaxial connections to a Vertilon PhotoniQ 32 channel data acquisition system. Depending on the
required speed and dynamic range, either a PhotoniQ IQSP480 high dynamic range system or an IQSP580 high speed
system can be used as the main data acquisition unit. The charge sensitive preamplifiers on the PhotoniQ integrate the
current signals from the detectors while maintaining a bias (Vb) near ground on the individual AC coupling capacitors.
Because the SPMArray2 devices are of the common anode type, the current polarity to the PhotoniQ preamplifiers is
out of the inputs. For this reason, the Input Polarity under the Data Configuration menu in the PhotoniQ GUI should be set
to the default value of positive. See the PhotoniQ user’s manual for more details.
Pulse Preamplifiers
There are many applications including PET and SPECT that require precise event timing pickoff from the SiPM detector
device. Specifically, acquisition of the event data needs to be accurately timed and synchronized with the detection of
particles on one or more of the elements in the SPMArray2. In fact, PET applications impose an additional condition on
event acquisition known as coincidence detection whereby triggering should only occur when near-simultaneous events
from each array are detected within a predefined time period. The SIB2316 contains dual event timing chains (one for
each SPMArray2) that are used for charge signal measurement, pulse discrimination, coincidence detection, and event
acquisition triggering.
Event timing begins with the pulse preamplifiers. The input signals to the preamplifiers are the current sense outputs from
the detector common anode bias generators. The current sense is a measure of the total current to all 16 detectors in an
SPMArray2 and is therefore a practical and precise means for detecting charge generated from particles that hit the SiPM
device. The SIB2316 pulse preamplifiers are variable gain transimpedance devices designed to accurately produce a
positive-going voltage output in response to a high speed input charge pulse. Their gain as well as all other SIB2316
parameters is adjusted using the dialog box shown on the next page available through the PhotoniQ GUI. Precision low
skew timing is achieved by using matched high bandwidth, low noise amplifiers. For diagnostic and monitoring purposes,
the outputs from the A and B preamps are available on SMB jacks J7 and J8, respectively. These outputs can also be
used as inputs to other external equipment such as time-of-flight measurement systems.

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Figure 5: SIB2316 Dialog Box

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Zero Slope Discriminator
Timing extraction from the charge pulse is accomplished by means of a zero slope discriminator whose timing is shown in
Figure 6. Using the preamplifier output as its input, the discriminator works by generating a positive-going digital timing
signal (ZSD) at the inflection point of the charge pulse input. It is at this point where the pulse is at its peak and its slope
transitions from positive to negative. The internal signal DIFF is effectively the derivative of the input pulse and therefore
crosses zero when the slope of its input is zero. This point is the trigger point in the figure. The actual digital timing output
from the discriminator goes high after a small delay (td) relative to the trigger point. To minimize the effects of noise and
other particle events not of interest, a comparator in the discriminator compares DIFF to a user-adjustable energy
threshold (Vth) so that only events exceeding the threshold result in a signal on ZSD — all other events are ignored. The
energy threshold adjustment to the SIB2316 is provided through the SIB cable so that the user can vary the threshold
using the SIB2316 dialog box in the PhotoniQ graphical user interface. The zero slope discriminators have four bandwidth
settings which along with the discriminator gain can similarly be adjusted through the GUI. For certain applications the
discriminator type can be switched to leading edge discrimination instead of zero slope discrimination.
Figure 6: Zero Slope Discriminator Timing
Vth
TRIGGER
POINT
ENERGY
THRESHOLD
POINT
ZSD
DIFF
COMMON
ANODE
CURRENT
PREAMP
OUTPUT
td

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Coincidence Detector
The coincidence detector uses the outputs from discriminators A and B to determine coincidence between particle events
on SPMArray2 devices A and B. As shown in Figure 7, events occurring within a user-defined coincidence time window
(tCW) result in the generation of a trigger signal on connector J6. This signal can be used to trigger the capture of the 32
SiPM detector signals by a data acquisition system or other electronics. Two LEDs are used to indicate that the
coincidence detector has determined a coincidence condition. When coincidence occurs due to an event on
SPMArray2 A followed by an event on SPMArray2 B, LED LD3 flashes green. In the reverse condition when an event on
SPMArray2 A follows an event on SPMArray2 B, LED LD4 flashes green. Generally both LEDs will flash equally when
events occur near simultaneously. If however a particle event on one array continually precedes an event on the other
array, then the LED associated with the array that detected the later event will flash red instead of green. When an event
is detected on a particular SPMArray2 but with no coincidence, then the LED associated with the SPMArray2 that
detected the event will flash red. The coincidence detector LEDs can be quite useful for system setup, diagnostics, and
timing alignment.
Figure 7: Coincidence Detector Timing
For applications requiring simple energy threshold triggering instead of event coincidence triggering, the coincidence
detector can be configured to generate a trigger signal if a threshold-crossing event is detected on either SPMArray2.
This is done by setting Trigger Type in the dialog box to Level.
tcw
TRIGGER
OUTPUT
SPMArray A
DISCRIMINATOR
SPMArray B
DISCRIMINATOR
tCW = Coincidence Window Time

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Setup
Jumpers & Switches
Make sure that all switches in the configuration switch, SW1, are set to on.
Power
Connect a sensor interface board cable to connector J3 on the SIB2316. Connect the other side of the cable to a
Vertilon PhotoniQ data acquisition system. Turn on the PhotoniQ and verify that the power LED, LD1, glows green.
The power LED will temporarily glow red when power is first applied. This is normal and indicates that the SIB2316
has not yet loaded configuration data. Open the SIB2316 dialog box in the PhotoniQ GUI to load the data.
Detector Bias
Select the Bias Enable in the SIB2316 dialog box to enable the bias voltage generator. Verify that the bias enable
LED, LD2, glows yellow indicating that the negative bias voltage generator is on. Use the Bias Voltage and Bias Trim
control boxes to set the detector bias voltage to the desired voltage. The bias voltage can be monitored at test points
P3 and P4.
SPMArray2 Connection
Turn off the bias to the SIB2316. Connect an SPMArray2 to channel A of the unit using an FPC cable. Connection to
the SIB2316 can be made using either the top side (J1) or bottom side (J9) FPC connector. Reapply the bias and
reconfirm that the bias voltage to the detector is correct. A second SPMArray2 device can be added in a similar way
to channel B using connectors J2 or J10.
Detector Bias Optimization
Connect the preamp output (J7) to an oscilloscope with a 50 ohm termination. With the SPMArray2 positioned in a
typical configuration in front of a particle source, adjust the detector bias so that the pulse height is about 1 volt peak.
If it is not possible to reach 1 volt peak under the maximum bias conditions, increase the gain of the preamp. Make
sure that there are no pulses that exceed 1.2 volts peak. If so, reduce the magnitude of the detector bias.
Energy Threshold
Using the SIB2316 dialog box in the PhotoniQ graphical user interface, set the trigger threshold to 5%. Verify that the
channel A coincidence LED, LD3 is blinking red. Increase the trigger threshold to the point when the LED just turns
off. Set the final trigger threshold to about 5 to 10% below this point.
Trigger Generation
When coincidence triggering is not required, a trigger signal can be generated on J6 any time the input signal crosses
the energy threshold. To disable coincidence triggering — and thus enable level triggering — set the Trigger Type in
the dialog box to Level. The output on SMB connector J6 can then be connected directly to the PhotoniQ trigger input
to trigger the data acquisition process. Each time a particle that exceeds the energy threshold is detected, the LED
will blink green and a trigger pulse will appear on J6. Note, although a trigger signal can be generated at rates
exceeding 100 KHz, the LED will only blink at a 2 Hz maximum rate. Depending on signal conditions, it may be
necessary to increase the coincidence window slightly to generate a trigger output. This is required even if
coincidence detection is not used.

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Coincidence Triggering
Connect a second SPMArray2 to the channel B FPC connector on the SIB2316. The channel B coincidence LED,
LD4 will blink red if particles exceeding the energy threshold are detected. Set the coincidence window to the desired
time. With the Trigger Type set to Coincidence, the LEDs will now blink green only when events detected on channel
A and B are within the coincidence time window. Trigger generation will only occur on coincidence.
Performance Optimization
Improved coincidence detection accuracy can be achieved by optimizing the gain and bandwidth settings for the
preamp and discriminators. In general the detector bias should be adjusted to get the maximum signal from the
SPMArray2 devices without saturating the preamp. Furthermore, it is best toachieve this using the minimum gain
setting. The discriminator gain should normally be set to the high gain mode but there are some applications where
the low gain is more desirable. The bandwidth of the discriminator should be selected to minimize the time walk that
results from detecting pulses of greatly differing pulse heights. When the expected pulse height varies greatly and
small coincidence windows are required, the highest discriminator bandwidth should be selected. There is a trade-off
between time walk and coincidence window jitter so the discriminator bandwidth should be chosen to meet the
requirements of the application.

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Specifications
(Vsupply = +5.0V, TA= +25C, unless otherwise noted)
Description Sym Min Typ Max Units Notes
DETECTOR COMMON ANODE BIAS
Nominal Adjustment Range VBIAS -32 -25.5 V Measured at P3 and P4 with 200uA load.
Trim Range -500 +500 mV Added to adjustment range
Current Sink Capability 1 mA
DETECTOR CATHODE CIRCUITS
Quantity P1–P32 32
Input Resistance R 10 KΩ
Coupling Capacitance C 0.01 uF AC coupled to transimpedance amp in PhotoniQ.
Input Bias Voltage VB +0.250 V Detector cathode biased at ground. Bias voltage on coupling
capacitor supplied from PhotoniQ data acquisition system
when SIB cable, J3, connected.
PULSE PREAMPLIFIER
Transimpedance Gain (Low) A +0.37 V/mA
Transimpedance Gain (High) A +0.75 V/mA
Rise Time 10 nsec Iin is a rectangular current pulse (5 nsec rise time, 5 nsec fall
time) applied to detector common anode input. Output
voltage swing is +0.8V into 50 ohms measured at J7 and J8.
Output Pulse Height +0.8 V
Baseline Voltage +0.63 V
Output Impedance 50 ΩMeasured at preamplifier outputs, J7 and J8 into 50 ohms.
ZERO SLOPE DISCRIMINATOR
Low Gain (Bandwidth = High) -0.26 V/V/usec
Low Gain (Bandwidth = Med High) -0.67 V/V/usec
Low Gain (Bandwidth = Med Low) -0.94 V/V/usec
Low Gain (Bandwidth = Low) -1.34 V/V/usec
High Gain (Bandwidth = High) -0.69 V/V/usec
High Gain (Bandwidth = Med High) -1.79 V/V/usec
High Gain (Bandwidth = Med Low) -2.51 V/V/usec
High Gain (Bandwidth = Low) -3.57 V/V/usec
3dB Bandwidth (Bandwidth = High) 3.6 MHz
3dB Bandwidth (Bandwidth = Med High) 1.4 MHz
3dB Bandwidth (Bandwidth = Med Low) 1.0 MHz
3dB Bandwidth (Bandwidth = Low) 0.71 MHz
Trigger Threshold Range 0 100 % Relative to maximum pulse height in discriminator chain

User Guide
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Description Sym Min Typ Max Units Notes
ZERO SLOPE DISCRIMINATOR TIMING
Output Delay td6 nsec
Time Walk (Iin: 100% to 50%) 4 5 nsec
Time Walk (Iin: 100% to 25%) 6 7 nsec
Jitter ±0.5 ±1 nsec
Iin is an asymmetric triangular pulse (250 nsec rise time, 750
nsec fall time) that results in a 0.8V pk signal on the
preamplifier output. Preamplifier gain and discriminator gain
set to maximum. Discriminator bandwidth set to high.
Trigger threshold set to 40%.
COINCIDENCE DETECTOR
Nominal Time Window Range tCW 5.0 128.0 nsec
Nominal Time Window Resolution 0.5 nsec
Nominal Time Window Accuracy ±2 %
Actual time window is approximately ±2 nsec less than
nominal setting. The extents of the coincidence window are
defined at the points where at least 50% of the coincident
events are detected.
Time Skew Path A to B -1.0 +1.0 nsec
Re-arm Time 50 nsec
Trigger rate when using coincidence detector typically
limited by the pulse width of the input signal to the
discriminator.
Trigger Output Impedance 50 Ω
Trigger Output Logic High Level VOH +4.3 +4.8 V (IOH = -32mA)
Trigger Output Logic Low Level VOL +0.2 +0.6 V
(IOL = 32mA)
POWER
Supply Voltage Vsupply +4.6 +5.0 +5.1 V
Supply Current Isupply 220 mA
Measured with detector bias enabled
DIMENSIONS
Width W 84.0 mm
Length L 102.0 mm
(not including SMB connectors which extend past PCB edge)
Thickness T 1.6 mm
(printed circuit board only)
Table 1: Specifications

SIB2316 Sensor Interface Board SensL SPMArray2
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Vertilon Corporation, 66 Tadmuck Road, Westford, MA 01886 /Tel: [phone] /Fax: [phone] /www.vertilon.com
Top and Bottom Views
Figure 8: Top and Bottom Views
1. SPMArray2 A Detector Test Input 2. SPMArray2 A Top Side FPC Connector (J1)
3. SPMArray2 B Top Side FPC Connector (J2) 4. SPMArray2 B Detector Test Input
5. Sensor Interface Board Connector (J3) 6. Configuration Switch (SW1)
7. Main Power LED 8. Detector Bias Enable LED
9. Trigger Output (J6) 10. External Input (J11)
11. SPM Array A Coincidence Detector LED 12. Preamp A Output (J7)
13. SPM Array B Coincidence Detector LED 14. Preamp B Output (J8)
15. SPMArray2 B Bottom Side FPC Connector (J10) 16. SPMArray2 A Bottom Side FPC Connector (J9)
5
8
1 3
6
7
15
16
4
2
9
11
12
14
13
10