Uniblitz VCM-D1 User manual

User Manual
UNIBLITZ®
VCM-D1 Shutter Driver
14-0025
Version 2.0
2004

VCM-D1 User Manual 2
Vincent Associates products are covered by U.S. patents.
Information in this publication supercedes that in all previously published material. Due to our ongoing
development program, Vincent Associates reserves to right to discontinue or change specifications or
designs, at any time, without incurring any obligation.
Printed in the U.S.A.
Version 2.0 2004
Vincent Associates, a Division of VA, Inc., 803 Linden Ave., Rochester, NY 14625
Tel: [phone] Fax: [phone]
UNIBLITZ is a registered trademark of VA, Inc.

VCM-D1 User Manual 3
WARRANTY
All products manufactured by VINCENT ASSOCIATES are warranted to
meet published specifications and to be free of defects in materials and
workmanship as defined in the specifications for 365 (one year) days from the
date of original shipment. MANUFACTURER will, at its own option, repair
or replace without charge any listed item discovered to be defective. Burned
out or otherwise damaged actuator coils are not covered under this warranty.
The buyer’s exclusive remedy and the limit of MANUFACTURER’S liability
for any loss whatsoever shall not exceed the purchase price paid by the buyer
for the goods to which a claim is made. MANUFACTURER does not give
any implied warranties of merchantability, fitness for a particular purpose, or
of any other nature in connection with the sale of any products.
The MANUFACTURER will consider the return of unused equipment if
returned within 30 days from the original date of shipment, subject to a 20%
restocking charge. This offer does not apply to used or damaged equipment.
This warranty extends only to the original purchase and is not available to any
third party, including any purchaser assemblies or other products of which the
goods may become component equipment.
This warranty does not extend to cover damage resulting from alteration,
misuse, negligence, abuse, normal wear and tear, or accident.

VCM-D1 User Manual 4

VCM-D1 User Manual 5
TABLE OF CONTENTS
WARRANTY................................................................................................................................................ 3
GENERAL SAFETY SUMMARY ............................................................................................................. 6
Injury Precautions ......................................................................................................................... 6
Product Damage Precautions........................................................................................................ 6
Safety Terms and Symbols............................................................................................................ 7
PREFACE..................................................................................................................................................... 8
GETTING STARTED.................................................................................................................................. 9
Features........................................................................................................................................... 9
Introduction.................................................................................................................................. 10
Start Up......................................................................................................................................... 11
Line Fuse Replacement................................................................................................................ 11
Voltage Change............................................................................................................................. 12
Initial Operation and Testing...................................................................................................... 13
VCM-D1 FRONT PANEL OPERATOR CONTROLS.......................................................................... 15
Description.................................................................................................................................... 15
Figure #2 – VCM-D1 Front Panel Operator Controls.............................................................. 14
Notes.............................................................................................................................................. 17
VCM-D1 REAR PANEL OPERATOR CONTROLS............................................................................. 19
Description.................................................................................................................................... 19
Figure #4 – VCM-D1 Rear Panel Operator Controls and I/O................................................. 18
OPERATING BASICS .............................................................................................................................. 21
Function Switches......................................................................................................................... 21
GATE INPUT............................................................................................................................... 21
Gate Timing Diagrams................................................................................................................. 22
Figure #5A and 5B GATE Input Timing Diagram ................................................................... 22
Mode Selection.............................................................................................................................. 23
RS-232C Operation...................................................................................................................... 24
Figure #6 VCM-D1 Daisy Chain Cable Configuration............................................................. 25
RS-232 Test Program................................................................................................................... 26
Shutter Frequency of Operation................................................................................................. 28
Trigger Cautions and Trouble Shooting Tips............................................................................ 28
Pulse Voltage Graphs................................................................................................................... 29
Figure #7 Pulse Voltage vs. Exposure Time............................................................................... 29
Figure #8 Pulse Voltage vs. Frequency....................................................................................... 29
Figure #9 Overall VCM-D1 Dimensions.................................................................................... 30
Maintenance ................................................................................................................................. 31
INSPECTION AND CLEANING............................................................................................................. 31
General Care ................................................................................................................................ 31
Inspection and Cleaning Procedures.......................................................................................... 31
Inspection - Exterior.................................................................................................................... 32
Cleaning Procedure - Exterior.................................................................................................... 32
Cleaning Procedure – Interior.................................................................................................... 32
SPECIFICATIONS.................................................................................................................................... 33
INDEX......................................................................................................................................................... 39

VCM-D1 User Manual 6
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to this
product or any products connected to it. To avoid potential hazards, use the product only
as specified.
Only qualified personnel should perform service procedures.
Injury Precautions
•Use proper Power Cord – To avoid fire hazard, use only the power cord supplied with this product.
•Avoid Electric Overload – To avoid electrical shock or fire hazard, do not apply a voltage to a
terminal that is outside the range specified for that terminal.
•Avoid Electric Shock – To avoid injury or loss of life, do not connect or disconnect line cord while
it is connected to the line voltage.
•Ground the Product – This product is grounded through the grounding conductor of the power
cord. To avoid electrical shock, the grounding connector must be connected to earth ground. Before
making connections to the input or output terminals of the product, ensure that the product is
properly grounded. DO NOT DEFEAT THE GROUND CONNECTION ON THE SUPPLIED
LINE CORD.
•Access to On/Off Switch – Due to the position of the unit’s power switch at the rear panel, do not
position the unit such that it is difficult to operate the on/off switch.
•Do Not Operate Without Cover – To avoid electric shock or fire hazard, do not operate this
product with the cover removed.
•Use Proper Fuse – To avoid fire hazard, use only the fuse type and rating specified for this product.
•Do Not operate in Wet/Damp Conditions – To avoid electric shock, do not operate this product in
wet or damp conditions.
•Do Not Operate in an Explosive Atmosphere – To avoid injury or fire hazard, do not operate this
product in an explosive atmosphere.
Product Damage Precautions
•Use Proper Power Source – Do not operate this product from a power source that applies more
than the voltage specified.
•Provide Proper Ventilation – To prevent product overheating, provide proper ventilation.
•Do Not Operate with Suspected Failures – If you suspect there is damage to this product, have it
inspected by qualified service personnel.

VCM-D1 User Manual 7
Safety Terms and Symbols
These terms appear in this manual
These symbols appear on the equipment
WARNING
CAUTION
ATTENTION – Refer to user manual.
Warning statements identify conditions or practices that
could result in injury or loss of life.
Caution statements identify conditions or practices that
could result in damage to this product or other property.

VCM-D1 User Manual 8
Preface
This Manual provides information for the VCM-D1 Shutter Driver. The manual
contains the following chapters:
•Getting Started contains a brief product description, information needed to power on
the drivers, fuse replacement and voltage change information, and a brief procedure
to verify that it functions.
•Operator Controls provide an outline of the panel control functions and locations at
the front and rear panels. This also includes the location and function of the
input/output signals.
•Operating Basics give further details to the operational features of the controllers.
•Specifications are described for all input/output levels, including other pertinent
details and information required for the RS-232 interface.
•Index contains a full index.
Following is the complete operators manual for the UNIBLITZ VCM-D1.
Please read this manual completely before operating your unit. Due to the
construction of this unit, we recommend that the unit be returned to the
manufacturer for repair, no user serviceable parts inside.

VCM-D1 User Manual 9
Getting Started
Features
The UNIBLITZ VCM-D1 replaces the VMM-D1 controller for those customers
requiring CE/UL/CSA certification. The VCM-D1 contains all of the features of the
VMM-D1, in addition to some new features, which enhance the units’ capability in even
more demanding applications.
These new features include:
•UL/CSA certified and CE compliant.
•An addressable RS-232 input through an RJ-45 input connector. Eight VCM-D1
units can also be daisy chained together by connecting the RJ-45 output to the RJ-45
input of the next controller within the chain. The user can select an address for each
unit in the chain at the rear panel.
•Switching capability on all input and output BNC connectors to provide either an
active high or an active low, logic trigger level.
•An AUX (auxiliary) output that can be toggled high to low and low to high by RS-
232 commands.
•A GATE INPUT which will allow the user to select single (or multiple) trigger
signal(s) from a stream of trigger signals.
•A LOCAL/REMOTE switch which will effectively "disconnect" all input signals
from the controller allowing the user to manually control the shutter without the need
to remove the signals from the BNC inputs or the terminal strip - located at the front
panel. RS-232C signals are also disabled in the LOCAL position.
•A manually re-configurable AC input module. The user will need to manually re-
configure the unit for 230VAC operation. This AC input module includes the AC
power cord input connector, power switch, dual ½ A “T” (slow blow) type 3AG line
fuses (for 115VAC operation), line voltage change over fuse holder, and line filter.
(For 230VAC operation user must change fuses to ¼ A “T” type 3AG line fuses.)
•A switch to disable the Electronic Synchronization System of a shutter so equipped.
•A new ODU type shutter output connector (push-lock type).
•Enhanced CONTROL terminal at the front panel which now also includes the
+5VDC and AUX outputs (which were located at the rear panel with the VMM-D1).
All voltage outputs are internally fuse protected – not user serviceable.

VCM-D1 User Manual 10
Introduction
The UNIBLITZ VCM-D1 is capable of controlling all shutter types in the
UNIBLITZ product line. The VCM-D1 has successfully completed and is compliant the
tests listed under “APPLICABLE CERTIFICATIONS” on page #38 of this manual
allowing it to be certified to CE/UL/CSA Safety and EMC certifications. The VCM-D1
incorporates a state of the art shutter driver while relying on the users input signal to
determine exposure and frequency.
One feature of the VCM-D1 is the selection of interrupt mode. With the mode
switch in the “A” position, the unit will disable itself upon an AC line loss. When power
is restored, the unit will remain disabled until reset. In the “B” position the unit will
become disabled when a DC voltage level is removed from the interrupt input. When the
input is restored, the unit will remain disabled until reset. The STD mode will bypass the
interrupt capability. This mode selection makes the VCM-D1 more versatile for
applications where the shutter must not re-open until acted upon by the user.
Another added feature of this unit is the GATE INPUT, the GATE INPUT is used
in conjunction with the TRIGGER INPUT. This input allows the user to “pick” one or a
finite number of trigger pulses to trigger the controller from a continuous stream of pulses
presented at the TRIGGER INPUT.
This unit also contains an addressable RS-232 input. By connecting the RJ-45
OUTPUT of one controller to the RJ-45 INPUT connector of the next controller in the
chain (using our 810RJ cable) multiple controllers can be connected together. In fact
eight separate addresses allow up to eight units to be individually controlled via one
computer serial port!
The patented driver design of the VCM-D1 allows the controller to operate all
shutter types in the UNIBLITZ product line.
A 3 meter 7-pin (Wire-Pro) female to 7-pin (ODU push-lock) male shutter inter-
connect cable is also included with each unit (cable model number - 710B).

VCM-D1 User Manual 11
Start Up
After unpacking your unit inspect for any defects. If upon inspection a problem is
found, or a part (or parts) are missing, notify Vincent Associates immediately. Be sure
you are using the line cord provided with this unit. For Domestic (USA) the proper
line cord is included. For Overseas (EU) a Standard European line cord is included
in place of the domestic line cord. If the included EU line cord is not compatible,
please use a line cord rated 230VAC, minimum 1A, and minimum 0.75 mm2
conductor size. The maximum cord length is 3 meters.
After the initial inspection the unit is ready to use. To properly install and power
on the VCM-D1, perform this procedure.
1. Check that you have the proper electrical connections. The rear label, which covers
the AC input module, is there to remind you to manually configure the AC input
module if the unit requires operation at 230VAC. See “Voltage Change”
instructions. THIS LABEL MUST BE REMOVED PRIOR TO INSERTING
THE POWER CORD INTO THE AC INPUT CONNECTOR REGARDLESS
OF WHICH AC VOLTAGE LEVEL IS USED.
2. Check the line fuses to be sure they are the proper rating. The VCM-D1 has been
shipped with the proper fuses for 115VAC operation (3AG ½ A “T” type - time-lag).
For 230VAC operation, change line fuses to the 5mm x 20mm ¼ A time-lag
(supplied w/unit, packaged separately). See “Line Fuse Replacement” instructions.
3. Be sure the AC module power switch is toggled to the “0” position and the power end
of the line cord is not connected to the AC line. Then connect the opposite end of the
supplied line cord to the rear panel AC module connector. Be sure the cord is
inserted completely into the AC module connector.
4. Connect the power end of the line cord to the AC line. Power unit ON by toggling
the AC module power switch to the “1” position. Power LED indicator will
illuminate.
5. Due to the position of the unit’s power switch at the rear panel, do not position the
unit such that it is difficult to operate the on/off switch.
Line Fuse Replacement
1. Have handy a small flat-bladed screwdriver or similar tool and refer to Figure #1.
2. Set the VCM-D1 unit so that the rear panel is facing you.
3. BE SURE THE LINE CORD IS DISCONNECTED FROM THE LINE
VOLTAGE POWER SOURCE. Unplug the line cord from the AC module
connector. You cannot proceed with this procedure without removing the line cord
from the VCM-D1 control unit.
To avoid injury or death, unplug the line cord from the
line voltage power source before continuing.
WARNING

VCM-D1 User Manual 12
4. Using the small flat bladed screwdriver or similar tool; insert the tool into the
cover door slot; pry open cover door.
5. Using the same tool; insert the tool into the fuse holder slot; pry out the fuse
holder block.
6. Remove defective fuse(s); replace with new fuse(s) and replace fuse holder into
housing; close the cover door.
Voltage Change
1. Repeat steps 1-5 in “Line Fuse Replacement” instructions and refer to
Figure #1.
2. Rotate the fuse holder block 180°; if changing to 230VAC, replace fuses with
two 5mm x 20mm ¼ A “T” type (time-lag) fuses. (Be sure to change fuses
back to 3AG ½ A time-lag fuses when changing back to 115VAC).
3. Replace fuse holder block and close the cover door. The desired voltage will
be indicated and appear in the cover door window.
(SAME POSITION OPPOSITE
SIDE OF FUSE #2)
FUSE HOLDER
FUSE #1
COVER DOOR
WINDOW
COVER
DOOR
COVER DOOR
SLOT
FUSE HOLDER
SLOT FUSE #2
230V
PRSR
115V
Figure #1 - AC Input Module
To avoid injury or death, unplug the line cord from the
line voltage power source before continuing.
WARNING

VCM-D1 User Manual 13
Initial Operation and Testing
The VCM-D1 will operate from 115VAC or 230VAC (50-60Hz), this is manually
selectable.
*PLEASE BE SURE THAT THE UNIT IS PROPERLY SET UP FOR THE LINE
VOLTAGE TO BE USED.*
Once the line cord has been attached to unit and connected to properly grounded wall
receptacle, the unit may be operated.
*BE SURE POWER SWITCH IS IN THE OFF POSITION BEFORE
CONNECTING PLUG TO LINE. ATTACH LINE CORD TO THE UNIT FIRST
BEFORE PLUGGING INTO THE AC POWER SOURCE.*
See “Start Up” section. Insert the 7- pin male ODU type connector of shutter
interconnect cable into 7- pin female ODU type receptacle at rear of unit labeled SHUTTER.
Connect the 7- pin female Wire-Pro connector of shutter interconnect cable to 7- pin male Wire-
Pro connector on shutter to be driven.
Place POWER switch to the ON “1” position, the POWER LED will illuminate. Place the
N.O./N.C. switch into the N.O. position. The shutter will open and remain open until the switch is
returned to the N.C. position. The SHUTTER ACTIVE LED will illuminate when this switch is
in the N.O. position.
All UNIBLITZ drivers provide the circuitry necessary to support shutters equipped with
the solid state synchronization option. Simply plug the shutter interconnect cable into the driver.
If your shutter is equipped with this option the green LED, labeled SYNC ACTIVE, will illu-
minate when the shutter is in the open position. In addition, the SYNC output will change to the
active state when the shutter is open. The absence of the solid state synchronization option will
only inhibit the operation of the SYNC output and SYNC ACTIVE LED. The remainder of the
VCM-D1 systems will not be affected. In addition the SYNC system can be disabled by sliding
the “G” FUNCTION switch to the upper position.
See specifications and operator controls for additional operational information
concerning other systems of the VCM-D1.
Should the shutter and/or control not respond as described previously, be sure line cord is
installed into the receptacle and connections to the shutter are made properly. Note that the
shutter output is also fused (located at the front panel - .6A time-lag). TURN OFF THE UNIT
AND REMOVE THE PLUG FROM THE AC SOURCE BEFORE CHECKING FOR
BLOWN FUSES. Be advised, a visual inspection of a fuse is usually NOT an adequate test to
determine if a fuse failure has occurred. Use a DMM (Digital Multi-Meter) or equivalent test
device to determine fuse continuity. Also, particular shutter units respond to different minimum
pulse widths. For example, a standard VS25 shutter has a minimum exposure pulse of 6ms, if the
timing is set for an exposure pulse width less than 6ms, the shutter may not open fully. If the unit
still does not operate properly, please notify Vincent Associates immediately.
CAUTION
CAUTION
CAUTION

VCM-D1 User Manual 14
STD A
B
MODE
CONTROL
DRIVER DISABLED
RESET
SYNC
N.O.
N.C.
LOCAL
REMOTE
POWER
SHUTTER
FUSE 0.6A T
MODEL VCM-D1
SHUTTER DRIVER
+10V +5V
®
®
Figure #2 – VCM-D1 Front Panel Operator Controls

VCM-D1 User Manual 15
VCM-D1 Front Panel Operator Controls
Description
(Refer to Figure #2)
1. CONTROL Terminal block. The five position terminal block referred to on the driver
(and throughout this manual) as CONTROL provide access to several of the input and
output connections for external operation of your driver. Each terminal is explained
below:
a. CONTROL #1 Output. +10VDC provided for remote switching applications or
control circuits.
b. CONTROL #2 Pulse In. Active high input to control shutter exposure for duration of
positive pulse, or electronic or mechanical switch contact closure. Shutter will follow
pulse and frequency applied to this input. (This will operate the same as the PULSE
IN BNC set to the active high mode.)
c. CONTROL #3 GND. This convenient ground point allows user to connect input or
output signals to ground (common) the VCM-D1 circuit.
d. CONTROL #4 Input. DC interrupt voltage. With key switch set to mode B, the
interrupt will be activated when input DC voltage (+8VDC min.) is disrupted via a
switch, transistor, or similar method. This input is for DC voltage only.
e. CONTROL #5 Output. When interrupt is activated, this normally low output is high
until reset deactivates the interrupt.
f. CONTROL #6 AUX Output. The VCM-D1 AUX output is an active low pulse
output that can be toggled TTL high and low from commands presented to the RS-
232C control input. See “AUX Out (CONTROL pin 6)” under EXTERNAL
OUTPUT CHARACTERISTICS.
g. CONTROL #7 Output. +5V is provided for remote switching applications or control
circuits.
2. MODE Keyswitch. The position of the key switch sets the mode of interrupt. The
interrupt switch disables the shutter driver when a voltage interrupt is detected, either AC
or DC. Upon reset, the shutter will return to the position set by an external input or the
position of the N.O./N.C toggle switch.
a. A(AC interrupt mode). Prevents the driver from re-opening the shutter
immediately upon power-up if the line voltage were to be interrupted. The driver
remains disabled until user supplies reset by specified means.
b. B(DC interrupt mode). When the key switch is in Position B the driver will
become disabled when it detects that the DC input voltage at CONTROL #4 has
been removed or disrupted. When the voltage level is re-applied, the driver remains
disabled until reset. The DC input voltage is supplied (from CONTROL #1) or from
an external source, determined by the user.
c. STD The STD mode bypasses the driver's interrupt capabilities. CONTROL #4 and
CONTROL #5 become inactive. The VCM-D1 will not remain disabled after a
disruption in line voltage.

VCM-D1 User Manual 16
3. SYNC. ACTIVE LED indicator. Indicates status of Solid State Sync. output. The green
LED is illuminated when shutter's electronic sync. is activated. (This LED functions only
if the shutter used is equipped with the Solid State Sync. system.)
4. DRIVER ACTIVE LED indicator. This LED indicates when the internal shutter driver
circuit input has an active signal present.
5. DISABLED Indicator. Indicates that one of the two interrupt modes (mode A or mode B)
has disabled the driver. LED is off after reset, and STD operation.
6. RESET Momentary Pushbutton Switch. Resets VCM-D1 disabled by interrupts (mode A
or mode B) and returns shutter to the position determined by the N.O./ N.C., or the status
of the PULSE input. (The TRIGGER flip-flop is also reset. If the shutter had been
activated by this input the shutter will close after a reset pulse.) Please note if an open
command is sent to the RS-232 input, a reset command will not clear the RS-232 output
and the shutter will not close. You must send a close command to allow the shutter to
close. If you wish to have the shutter close (or return to the state as set by the N.O./N.C.
switch) with a reset command or the RESET switch, you must open the shutter with a
trigger command.
7. LOCAL/REMOTE Toggle switch. When in the LOCAL position all inputs to the unit
are effectively "disconnected” allowing the user to manually control the shutter without
the need to remove the signals from the BNC inputs or the terminal strip (located at the
front panel). In the REMOTE position, the unit will function normally. RS-232C signals
are also disabled with this switch in the LOCAL position.
8. POWER LED indicator.
9. SHUTTER FUSE. Replace with 5mm x 20mm .6A time-lag fuse. This fuse may fail if the
shutter is operated at an excessive frequency and duty cycle to protect the coil from premature
failure. If the operation of the shutter used is causing “nuisance blowing” of this fuse, please
contact technical support to discuss your application.
10. N.O./N.C. Toggle switch. The position of this switch determines shutter status BEFORE a
trigger signal is received by VCM-D1. In the N.C. position the shutter will be activated open by
an input pulse signal. In the N.O. position the shutter will be activated closed. The N.O./N.C
switch acts to invert the shutter operation. Any RESET command will return the shutter to the
position determined by the N.O./N.C. switch. Please note if an open command is sent to the RS-
232 input, a reset command will not clear the RS-232 output and the shutter will not close. You
must send a close command to allow the shutter to close. If you wish to have the shutter close (or
return to the state as set by the N.O./N.C. switch) with a reset command or the RESET switch, you
must open the shutter with a trigger command.

VCM-D1 User Manual 17
Notes

VCM-D1 User Manual 18
Figure #4 – VCM-D1 Rear Panel Operator Controls and I/O

VCM-D1 User Manual 19
VCM-D1 Rear Panel Operator Controls
Description
(Refer to Figure #4)
1. ADDRESS SELECT switch. Rotation of the 8 position octal rotary switch selects the active RS-
232C address of the unit. See “ADDRESS Select” under GENERAL CHARACTERISTICS.
2. PULSE INPUT BNC. Allows control of the shutter exposure and frequency from a TTL signal
source. The pulse duration determines the shutter exposure interval. The frequency of the signal
presented to this input determines the frequency of shutter exposures. This input can be set active
high or active low by FUNCTION switch B. See “FUNCTION Select” under GENERAL
CHARACTERISTICS.
3. RS-232C Dual RJ45 female connectors. Provides access to the VCM-D1 RS-232C interface
allowing the user to control input functions via commands sent from a computer RS-232C serial
port. The INPUT connector accepts commands directly from a computer’s serial port or from
another VCM-D1 in the daisy chain. The OUTPUT connector allows the controller to send
commands to the next controller in the daisy chain. For further reference see Figure #6 on page
#25. See also RS-232C INPUT (Dual RJ45) under EXTERNAL INPUT SPECIFICATIONS
(page #34) and RS-232C OUTPUT (Dual RJ45) under EXTERNAL OUTPUT
SPECIFICATIONS (page #35).
4. TRIGGER INPUT BNC. Allows for pulsed open/pulsed close shutter operation. Opens the
shutter on the first pulse trigger edge, closes the shutter on the next trigger edge. This input
operates in conjunction with the GATE INPUT. When the GATE INPUT is active, the
TRIGGER INPUT will be enabled. This input can be set active high or active low by
FUNCTION switch A. See “FUNCTION Select” under GENERAL CHARACTERISTICS.
5. RESET INPUT BNC. Resets the VCM-D1 disabled by an interrupt (MODE A or MODE B)
when switched to ground level via TTL logic or simply shorting to ground through a switch
contact. TTL logic pulse returns the shutter to the position determined by the N.O./N.C. toggle
switch. When the shutter is opened via the TRIGGER INPUT, a TTL pulse presented to the
RESET input will close the shutter. Please note if an open command is sent to the RS-232 input,
a reset command will not clear the RS-232 output and the shutter will not close. You must send a
close command to allow the shutter to close. If you wish to have the shutter close (or return to
the state as set by the N.O./N.C. switch) with a reset command, you must open the shutter with a
trigger command. This input can be set active high or active low by FUNCTION switch C. See
“FUNCTION Select” under GENERAL CHARACTERISTICS.
6. GATE INPUT BNC. An active signal present at this input will enable trigger signals presented
to the TRIGGER INPUT. (An unused GATE INPUT is in the active state.) When this signal
goes inactive, the TRIGGER INPUT will disable. In this way, the user can effectively “gate” a
stream of trigger pulses and allow one or more to be received, as determined by the user, by the
VCM-D1. Therefore, this input can be used to “pick” a pulse or pulses from a series of trigger
pulses presented to the TRIGGER INPUT. This input must be used in conjunction with the
TRIGGER INPUT. This input can be set active high or active low by FUNCTION switch D. See
“FUNCTION Select” under GENERAL CHARACTERISTICS.

VCM-D1 User Manual 20
7. SHUTTER Output 7-pin ODU female push-lock type receptacle. 7-pin female ODU type
connector to mate with 7-pin ODU male plug of the 710B 10’ interconnect cable included with
the unit. Pin out as follows, wire colors indicate 710B cable and shutter wiring layout:
ODU Description Shutter 710B Wire-Pro
a. Pin 2 Shutter Actuator Coil Drive Output Red Red Pin A
b. Pin 3 Shutter Actuator Coil Drive Output Brown Brown Pin B
c. Pin 4 Sync. Emitter Diode Output White White Pin C
d. Pin 5 Circuit Ground Green Green Pin D
e. Pin 6 Sync. Detector Transistor Input Yellow Orange Pin E
f. Pin 1 +5.0VDC Power Supply Output Blue Blue Pin F
g. Pin 7 Shutter Ground Black Black Pin H
8. 115 VAC 60Hz. /230 VAC 50Hz. Input module. Mates with female IEC plug on supplied line
cord. Includes the following additional functions:
a. Power switch – “0” is off, “1” is on.
b. Power fuses: ½Amp SB for 115 VAC 60Hz., ¼Amp SB for 230 VAC 50Hz. See “Line
Fuse Replacement” instructions.
c. Voltage change switchover block. See “Voltage Change” instructions.
d. 3A line filter. (Internal, not user accessible)
9. FUNCTION switches. Eight sub-miniature slide switches. A-D switches are used to select the
active states of each of the four input BNC input connectors. E-F switches are used to select the
active states of each of the two output BNC output connectors. (See “FUNCTION select” under
GENERAL CHARACTERISTICS.) The Gswitch allows the user to disable the electronic sync
circuit. Slide switch to the up position to disable the electronic sync. This shuts off the infrared
emitter internal to the shutter which intern disables the SYNC OUTPUT. The Hswitch is used to
select the proper pulse energy for the shutter being driven. Switch to the HIGH (up) position for
the VS35 (35mm aperture), the CS45 (45mm aperture), the CS65 (65mm aperture) and larger
aperture shutters types, switch to the LOW (down) position for all other shutter types.
10. SYNC. OUTPUT BNC. Output for shutters equipped with the SOLID STATE
SYNCHRONIZATION SYSTEM option. The shutter’s internal sync. circuit sets the BNC to a
low level when the sync. circuit becomes active. The output goes low when the shutter reaches
80% of full open, and goes to the high state when the shutter reaches 20% closed. The front
panel SYNC. ACTIVE LED illuminates when the sync. is active. This output can be disabled
with the GFUNCTION switch – see #9 above. This input can be set active high or active low by
FUNCTION switch F. See “FUNCTION Select” under GENERAL CHARACTERISTICS.
11. PULSE OUTPUT BNC. The duration of this pulse is equal to the duration of the shutter
exposure pulse. This output can be used to daisy chain VCM-D1 units together. A TTL
exposure pulse input to the PULSE INPUT BNC will appear at the PULSE OUTPUT BNC. Note
toggling the N.O./N.C. will not change the state of the PULSE OUTPUT. This input can be set
active high or active low by FUNCTION switch E. See “FUNCTION Select” under GENERAL
CHARACTERISTICS.