Vincent Associates VMM-T1 User Manual

1.800.828.6972

*THIS IS A DISCONTINUED PRODUCT*

User Manual

VMM-T1 Shutter Driver Timer

14-0020
Version 2.00
2013

* THIS IS A DISCONTINUED PRODUCT*

For information regarding applicable intellectual property, please visit www.uniblitz.com/patents.

Information in this publication supersedes that in all previously published material. Due to our ongoing
development program, Vincent Associates reserves the right to discontinue or change specifications or
designs, at any time, without incurring any obligation.

Version 2.00

2013

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.

Printed in the U.S.A.

* THIS IS A DISCONTINUED PRODUCT*

Warranty

LIMITED PRODUCT WARRANTY: All Products manufactured by VINCENT ASSOCIATES®
(MANUFACTURER) are warranted to meet published specifications and to be free of defects in
materials and workmanship as defined in the specifications for 365 days - one year - (WARRANTY
PERIOD) from the date of original shipment of the product. DSS series shutters are additionally
warranted to achieve two million cycles within the WARRANTY PERIOD (as defined in the CYCLE
WARRANTY CRITERION). MANUFACTURER will, at its own option within the WARRANTY
PERIOD, repair or replace without charge any listed item discovered to be defective excepting
transportation charges. Burned out or otherwise damaged actuator coils are not covered under this
warranty. Any defective product returned to the MANUFACTURER must follow the RETURN
MATERIAL AUTHORIZATION PROCEDURE as defined below. This warranty does not extend to
cover damage resulting from alteration, misuse, negligence, abuse, normal wear and tear, or accident.
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.

CYCLE WARRANTY CRITERION: One "cycle" is considered one open and one closure of the shutter.
DSS Shutter must be operated with the ED12DSS driver or equivalent H-Bridge type shutter driver
circuit at +10.7VDC across the actuator coil for the specified duration. DSS Shutter must be operated
within the defined environmental, electrical and mechanical specifications as listed on the device's data
sheet. After one year (WARRANTY PERIOD), the cycle warranty is null and void. If returned, the
device must be accompanied by a written statement indicating the approximate number of cycles
contained on the device, include all parameters to which the shutter was operated and follow the
RETURN MATERIAL AUTHORIZATION PROCEDURE as defined below.

RETURN MATERIAL AUTHORIZATION PROCEDURE: MANUFACTURER will only accept
returned Products from customers that have obtained an RMA (Return Material Authorization) number
from the MANUFACTURER. The customer must also include an itemized statement of defect(s). The
Product will then be evaluated per the MANUFACTURER'S standard repair guidelines. Any Product
which has been returned to the MANUFACTURER but which is found to meet the applicable
specifications and not defective in materials and workmanship shall be subject to the
MANUFACTURER's standard evaluation charge. The MANUFACTURER assumes no liability for
customer returned material.

LIMIT OF LIABILITY: 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.

VMM-T1 User Manual 3

* THIS IS A DISCONTINUED PRODUCT*

TABLE OF CONTENTS

WARRANTY ..................................................................................................................... 3

GENERAL SAFETY SUMMARY .................................................................................. 5

Injury Precautions ..................................................................................................... 5

Product Damage Precautions .................................................................................... 5

Safety Terms and Symbols ........................................................................................ 7

PREFACE .......................................................................................................................... 8

GETTING STARTED ...................................................................................................... 9

Features ....................................................................................................................... 9

Introduction .............................................................................................................. 10

Start Up ..................................................................................................................... 10

Line Fuse Replacement ............................................................................................ 11

Voltage Change ........................................................................................................ 12

Shutter Fuse Replacement ....................................................................................... 12

Initial Operation and Testing .................................................................................. 13

OPERATOR CONTROLS ............................................................................................. 15

VMM-T1 Front Panel Operator Controls ............................................................. 15

VMM-T1 Rear Panel Operator Controls .............................................................. 19

OPERATING BASICS ................................................................................................... 23

Function Switches .................................................................................................... 23

Gate Input ................................................................................................................. 23

RS-232C Operation .................................................................................................. 25

RS-232C Test Program ............................................................................................ 27

Shutter Frequency of Operation ............................................................................. 30

Trigger Cautions and Trouble Shooting Tips ....................................................... 30

Pulse Voltage Graphs ............................................................................................... 31

Dimensions ................................................................................................................ 32

Maintenance ............................................................................................................. 32

General Care............................................................................................................. 33

Inspection and Cleaning .......................................................................................... 33

Inspection – Exterior ........................................................................................ 33

Cleaning Procedure – Exterior ......................................................................... 33

Inspection – Interior ......................................................................................... 33

Cleaning Procedure – Interior .......................................................................... 33

SPECIFICATIONS ......................................................................................................... 34

System Characteristics............................................................................................. 34

External Input Characteristics ............................................................................... 35

External Output Characteristics ............................................................................ 37

General Characteristics ........................................................................................... 37

INDEX .............................................................................................................................. 41

VMM-T1 User Manual 4

* THIS IS A DISCONTINUED PRODUCT*

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 and risk of personal injury 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 location of the unit’s On/Off switch on the rear panel, do

not position the unit such that the On/Off switch is difficult to access and operate while installed

and in use.

 Do Not Operate Without Covers – To avoid electric shock or fire hazard, do not operate this

product with case or panels 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.

VMM-T1 User Manual 5

 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.

VMM-T1 User Manual 6

* THIS IS A DISCONTINUED PRODUCT*

CAUTION

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.

WARNING

Safety Terms and Symbols

These terms appear in this manual

VMM-T1 User Manual 7

* THIS IS A DISCONTINUED PRODUCT*

Preface

This Manual provides information for the VMM-T1 Shutter Driver/Timer. The manual contains the
following chapters:

 Getting Started contains a brief product description, information needed to power on the driver

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 gives further details to the operational features of the controllers.

 Specifications are described for all input/output levels as well as timing accuracy of the VMM-

T1 Shutter Driver/Timer including other pertinent details and information required for the RS­232 interface.

 Index contains a full index.

What follows is the complete operator’s manual for the UNIBLITZ VMM-T1 Shutter

Driver/Timer. 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.

VMM-T1 User Manual 8

* THIS IS A DISCONTINUED PRODUCT*

Getting Started

Features

The VMM-T1 Shutter Driver/Timer replaces the T132 controller. The VMM-T1 contains nearly all
of the features of the T132 plus some new features which enhance the unit’s capability in even more
demanding applications.

These new features include:

 An addressable RS-232 input. Eight units can be daisy-chained together via the RS-232 input

connector (DB-9 female) and the user can select an address for each unit at the rear panel
through the use of the ADDRESS switch.

 Switching capability on all BNC input jacks to provide either an active-high or active-low logic

trigger level.

 An Auxiliary (AUX) output that is the DELAY timer output, on a three-pin terminal located on

the rear panel. This terminal also includes pins for +5VDC and Ground.

 A GATE INPUT which allows the user to select a single or multiple trigger signals from a

stream of trigger signals.

 An EXPOSURE PRESET (EXP PRESET) control which combines the functions of the

NORM/CONT switch of the previous Model T132 and an exposure counter. The user can pre­select a number of exposures per trigger signal from 1 to 99. By selecting the EXP PRESET to
00 the unit will re-trigger continuously.

 A user-configurable AC input module. This AC input module includes the AC power cord input

receptacle, power switch, dual 3AG, 0.5A time-lag (slo-blo) line fuses (For 115 VAC
operation), line voltage change-over fuse block, and line filter. Dual 3AG, 0.25A time-lag (slo­blo) line fuses for 230 VAC operation are supplied.

VMM-T1 User Manual 9

* THIS IS A DISCONTINUED PRODUCT*

CAUTION

This label must be removed prior to inserting the power cord into the
AC input receptacle regardless of which AC voltage level is used.

Caution statements identify conditions or practices that could result in

Introduction

The UNIBLITZ VMM-T1 is capable of controlling all shutter types in the UNIBLITZ product line. The
VMM-T1 incorporates two precise timers to control shutter exposure and delay intervals. Each timer

has a range from 0.1msec to 9999 seconds. Four-digit pushwheel switches provide exceptional
resolution for use in a multitude of shutter applications, ranging from holography to microscopy. The
VMM-T1 incorporates a state of the art shutter driver and relies on the user’s input signal to determine
exposure and frequency.

Another feature of the VMM-T1 is the PRE or POST exposure delay. The PRE/POST toggle switch
allows the user to actuate the shutter immediately upon receipt of a trigger signal or delay the
EXPOSURE for a predetermined period. The period of the DELAY interval is determined from the
front panel DELAY TIME SELECT. The DELAY signal is provided to the AUX output terminal
located at the rear panel. In addition to the PRE/POST DELAY, the VMM-T1 can re-trigger itself
continuously to provide low level chopper control. By selecting the EXP PRESET pushwheel switch to
“00”, the DELAY interval control acts as the recycle interval to determine the exposure frequency. The
unit will run continuously until reset. By selecting any value between 01 and 99 the shutter will trigger
for the number of exposures selected.

The VMM-T1 contains an addressable RS-232C input. By using the Model 910RSDC daisy-chain
cable, multiple controllers can be connected and controlled. Eight separate addresses are available
which allows up to eight units to be individually controlled by a single computer serial port.

The patented driver design of the VMM-T1 allows the controller to operate all shutter types in the
UNIBLITZ product line.

A Model 710C, 7-pin female to 7-pin male (3 meter length), shutter interconnect cable is also included
with each unit.

Start Up

After unpacking the unit, inspect for any obvious defects and that all manufacturer supplied materials
are present.

If a problem is found or a part (or parts) is missing, please contact Vincent Associates immediately for
problem resolution. Do not attempt to connect the unit if defects or damage are noted until Vincent
Associates has been contacted and the problem resolved.

After the initial inspection the unit is ready to use. To properly install and power on the VMM-T1,
please follow the procedure below.

1. Check for proper electrical connections. Please note the label covering the AC input module. It

is there as a reminder to re-configure the AC input module if the unit requires operation at
230VAC. The VMM-T1 is shipped with the proper fuses for 115 VAC operation installed (two
3AG, 0.5A time-lag (slo-blo)). See “Voltage Change” instructions elsewhere in this manual.

VMM-T1 User Manual 10

* THIS IS A DISCONTINUED PRODUCT*

To avoid injury or death, unplug the line cord from the line
voltage power source before continuing.

WARNING

2. Remove the label before proceeding.

3. Check the line fuses to be sure they are the proper rating. For 230 VAC operation, change the

two line fuses to two 3AG, 0.25A time-lag (supplied). See “Line Fuse Replacement”
instructions elsewhere in this manual.

4. Be sure the AC module power switch is toggled to the “0” position and the line cord is NOT

connected to the AC line.

5. Connect the supplied line cord to the rear panel AC module receptacle. Be sure the cord is

inserted completely into the AC module receptacle.

6. Connect the line cord to the AC line.

7. Please Note: The VMM-T1 power switch is located on the rear of the case. Please be sure that it

is readily accessible at all times when in use.

8. Power ON the unit by toggling the AC module power switch to the “1” position. Power LED

indicator will illuminate.

Line Fuse Replacement

1. A small flat-bladed screwdriver or similar tool is needed to complete this procedure. Please refer

to Figure 1.

2. BE SURE THE LINE CORD IS DISCONNECTED FROM THE LINE VOLTAGE

POWER SOURCE. DO NOT CONTINUE WITH THIS PROCEDURE WITHOUT
REMOVING THE LINE CORD FROM THE VMM-T1.

3. Unplug the line cord from the AC module receptacle of the VMM-T1.

4. Position the VMM-T1 unit so that the rear panel is facing.

5. Please refer to Figure 1. Using the small flat-bladed screwdriver or similar tool, insert the tool

into the cover door slot, gently pry open cover door.

6. Insert the tool into the fuse holder slot and gently pry out the fuse holder block.

7. Remove defective fuse(s); replace with new fuse(s).

8. Replace fuse holder into housing.

9. Close the cover door.

VMM-T1 User Manual 11

To avoid injury or death, unplug the line cord from the line
voltage power source before continuing.

WARNING

Figure #1 - AC Input Module

Voltage Change

1. Please refer to Figure #1.

2. Repeat steps 1 – 6 in “Line Fuse Replacement” instructions.

3. To change from 115 VAC to 230 VAC, rotate the fuse holder block 180.

4. Remove the two 3AG, 0.5A time-lag fuses and replace with two 3AG, 0.25A time-lag fuses.

(Note: Be sure to change fuses back to 3AG, 0.5A time-lag fuses when changing back to 115VAC
operation).

5. Replace fuse holder block and close the cover door. The desired line voltage will be indicated in

the cover door window.

Shutter Fuse Replacement

1. Please refer to Figure 2 for VMM-T1 front panel layout.

2. A medium flat-bladed screwdriver or similar tool is needed to complete this procedure.

3. Power the unit OFF and disconnect the line cord from the line voltage power source.

4. Position the VMM-T1 unit such that the front panel is facing you. If necessary, disconnect the

shutter cable from the respective 7-pin SHUTTER connector on the rear panel.

VMM-T1 User Manual 12

5. Using the screwdriver, or similar, insert the tool into the slot on the SHUTTER FUSE cap, apply

WARNING: Be sure power switch is in the off position
before connecting the power cord to line. Attach line cord
to the unit first before plugging into the AC power source.

WARNING

slight inward pressure and rotate the cap 1/8 turn, counterclockwise. The fuse cap will pop out
slightly.

6. Remove the fuse cap and fuse.

7. Replace the fuse with a known good one. Shutter fuse is a 0.6A, 5 x 20 mm, time-lag (slo-blo)

type.

8. Reverse the procedure to re-install the fuse cap, reconnect all cables and power the unit back up.

Initial Operation and Testing

1. The VMM-T1 is manually selectable to operate from 115 VAC or 230 VAC (50-60Hz).

PLEASE BE SURE THAT THE UNIT IS PROPERLY SET UP FOR THE LINE
VOLTAGE TO BE USED. Refer to the “Voltage Change” section of this manual for further

information and procedures.

2. Once the line cord has been attached to unit and connected to properly grounded wall receptacle,

the unit may be energized. See “Start Up” section.

3. Insert the 7-pin male connector of shutter interconnect cable into 7- pin female receptacle at rear

of unit labeled SHUTTER.

4. Connect the 7-pin female connector of the shutter interconnect cable to 7-pin male connector on

shutter to be driven.

5. Place VMM-T1 POWER switch to the ON “1” position, the POWER LED will illuminate.

6. 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 DRIVER ACTIVE LED will illuminate when
this switch is in the N.O. position.

7. 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
the shutter is equipped with the Solid State Synchronization option, the green LED labeled
SYNC ACTIVE will illuminate when the shutter is in the open position. In addition, the SYNC
Output BNC will change to the active state when the shutter is open. The absence of the solid
state synchronization option will inhibit the operation of the SYNC output and SYNC ACTIVE
LED. The remainder of the VMM-T1 systems will not be affected.

8. See specifications and operator controls for additional operational information concerning other

features of the VMM-T1

9. Should the shutter and/or controller not respond as described previously, be sure line cord is

installed into the receptacle and connections to the shutter are properly made. Note that the
shutter output is also fused. The fuse is located on the front panel and is a 0.6A, 5 x 20 mm,

VMM-T1 User Manual 13

time-lag. Check this fuse for failure. Please refer to the SHUTTER FUSE REPLACEMENT

CAUTION

Turn off the unit and remove the plug from the AC source before
checking for blown fuses

section of this manual.

10. Be advised, a visual inspection of a fuse is usually NOT an adequate test to determine if a fuse

has failed. Use a DMM (Digital Multi-Meter) or equivalent test device to determine fuse
continuity.

11. Additionally, please note that particular shutter units respond to different minimum pulse widths.

For example, a standard VS25 shutter has a minimum exposure pulse of 6 msec. If the timing is
set for an exposure pulse width less than 6 msec, the shutter may not open fully.

12. If the unit still does not operate properly, turn off and disconnect the unit. Please notify Vincent

Associates immediately. There are no user-serviceable parts outside or inside of the unit.

VMM-T1 User Manual 14

Operator Controls

VMM-T1 Front Panel Operator Controls

Please refer to Figure 2.

1. DELAY TIMER Select:

Four pushwheel switches that determine the DELAY timing range. The total delay interval will
be the product of the DELAY TIMER SELECT and DELAY MULTIPLIER. Each depression
of the (+) key increases each digit by one, the (-) key decreases each digit by one.

2. DELAY LED Indicator:

Green LED indicates when DELAY timer is active.

3. EXPOSURE TIMER Select:

Four pushwheel switches that determine the EXPOSURE timing range. The total exposure
interval will be the product of the EXPOSURE TIMER SELECT and EXPOSURE
MULTIPLIER. Each depression of the (+) key increases each digit by one, the (-) key decreases
each digit by one.

4. EXPOSURE LED Indicator:

Green LED indicates when EXPOSURE timer is active.

5. EXPOSURE MULTIPLIER Switch:

A 5-position rotary switch. Clockwise rotation increases the magnitude of the EXPOSURE
interval by a factor of 10.

6. EXP. PRESET Select:

Two pushwheel switches that determine the number of exposure cycles the unit will count up to
per trigger input. A setting of “00” allows the unit to run continuously until reset. In the “00” or
continuous setting, the time between exposures is determined by the DELAY time interval.

7. SYNC. ACTIVE Indicator:

Green LED indicates the status of the Solid State Synchronization system. LED is illuminated
when the shutter's electronic SYNC sensor is active. This LED functions only if the shutter used
is equipped with the Solid State Synchronization system.

8. DRIVER ACTIVE Indicator:

Red LED indicates when the internal shutter driver circuit input has an active signal present.

9. ACTUATE Switch:

Depressing this momentary pushbutton switch triggers the VMM-T1 EXPOSURE and DELAY
timers from the front panel.

10. RESET Switch:

A momentary pushbutton switch that inhibits all functions of the unit. Depress this switch to
reset both the EXPOSURE and DELAY timers, and return all outputs to their original state.
Shutter state will be returned to the status set by the N.O./N.C. switch.

VMM-T1 User Manual 15

Please note if an OPEN command is sent to the RS-232C input a RESET command will not clear
the RS-232C output and the shutter will not close. A CLOSE command must be sent to allow the
shutter to close. If it is desired to have the shutter close with a RESET command or the RESET
switch the shutter must be opened with a TRIGGER command. In this case the shutter will either
close, upon reset, or return to the state as set by the N.O./N.C. switch.

11. PRE/POST Toggle Switch:

Position of this switch determines if DELAY interval occurs before (PRE) or after (POST) the
EXPOSURE interval.

a. PRE mode: Delays the start of the shutter EXPOSURE interval until the end of the

DELAY interval.

b. POST mode: The DELAY timer is triggered at the conclusion of the EXPOSURE

interval.

c. In PRE or POST the DELAY (AUX) output will go high for the duration of the DELAY

interval when the DELAY timer is active.

12. POWER LED Indicator:

Red LED, when lit indicates the unit is powered.

13. SHUTTER FUSE.

Replace with 5 x 20 mm, 0.6A time-lag (slo-blo) fuse.

Please note: 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.

14. N.O./N.C. Toggle switch:

The N.O./N.C. switch acts to invert the shutter operation. The position of this switch determines
shutter status before a trigger signal is received by the VMM-T1.

a. N.C. (Normally Closed): The shutter will be closed and commanded to open by an input

pulse signal.

b. N.O. (Normally Open): The shutter will be open and activated to close by an input pulse

signal.

c. Any RESET command will return the shutter to the position determined by the N.O./N.C.

switch.

d. Please note if an OPEN command is sent to the RS-232C input, a RESET command will

not clear the RS-232C output and the shutter will not close. A CLOSE command must be
sent to allow the shutter to close. If it is desired close the shutter or return it to the state
set by the N.O./N.C. switch with a RESET command or by the RESET switch, the shutter
must be opened with a trigger command.)

15. DELAY MULTIPLIER switch:

A 5-position rotary switch. Clockwise rotation increases the magnitude of the DELAY interval
by a factor of 10.

VMM-T1 User Manual 16

VINCENT

ASSOCIATES

A

V

Figure 2 – VMM-T1 Front Panel Operator Controls

VMM-T1 User Manual 17

Notes

VMM-T1 User Manual 18

VMM-T1 Rear Panel Operator Controls

Please refer to Figure 3.

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 OUTPUT BNC.

a. Active-low output.

b. The duration of this pulse is equal to the duration of the shutter exposure pulse.

c. This output can be used to daisy-chain VMM-T1 units together.

d. A TTL exposure pulse input to the PULSE INPUT BNC will appear at the PULSE OUTPUT

BNC.

e. Note toggling the N.O./N.C. switch will not change the state of the PULSE OUTPUT.

3. RS-232C DB-9 female connector.

Provides access to the VMM-T1 RS-232C interface allowing the user to control input functions
via a computer RS-232C serial port. See RS-232C DB-9 female under EXTERNAL INPUT
SPECIFICATIONS.

4. TRIGGER INPUT BNC:

a. Opens the shutter on the first pulse trigger edge.

b. Closes the shutter on the next trigger edge.

c. Pulse starts EXPOSURE and DELAY interval sequence.

d. This input operates in conjunction with the GATE INPUT BNC.

e. When the GATE INPUT is active (default selection) the TRIGGER INPUT will be enabled.

f. This input can be set active-high or active-low by FUNCTION switch A. See “FUNCTION

SELECT” under GENERAL CHARACTERISTICS.

5. RESET INPUT BNC:

Inhibits VMM-T1 timing functions and both the DELAY and EXPOSURE timers are RESET.

Please note if an open command is sent to the RS-232C input, a RESET command will not clear
the RS-232C output and the shutter will not close. A CLOSE command must be sent to force the
shutter to close. If it is desired to have the shutter close or return to the state as set by the
N.O./N.C. switch with a RESET command the shutter must be opened 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:

a. An active signal present at this input will enable trigger signals presented to the TRIGGER

INPUT BNC. (An unused GATE INPUT is in the active state.)

VMM-T1 User Manual 19

b. When the applied 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.

c. This input can be used to “pick” a pulse or pulses from a series of trigger pulses presented to

the TRIGGER INPUT.

d. This input must be used in conjunction with the TRIGGER INPUT BNC.

e. This input can be set active-high or active-low by FUNCTION switch D. See “FUNCTION

Select” under GENERAL CHARACTERISTICS.

7. SHUTTER Output 7-pin Connector.

A 7-pin female connector to mate with 7-pin male plug of the Model 710C interconnect cable
included with the unit. Pin-out as follows:

a. Pin A - Shutter Actuator Coil Drive Send

b. Pin B - Shutter Actuator Coil Drive Return

c. Pin C - Sync Emitter Diode Source

d. Pin D - Sync Ground

e. Pin E - Sync. Detector Transistor Output

f. Pin F - +6.75 VDC Sync Power Source

g. Pin H - Shutter Ground

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: 3AG, 0.5A, time lag (slo-blo) for 115 VAC 60Hz (2 required), 3AG, 0.25A,

time lag (slo-blo) for 230 VAC 50Hz (2 required). See “LINE FUSE REPLACEMENT”
instructions.

c. Voltage change switchover block. See “VOLTAGE CHANGE” instructions.

d. 3Amp line filter. (Internal, not user accessible)

9. AUX/GND/+5V Auxiliary Terminal:

a. A 3-pin pluggable terminal block connector.

b. Both +5.0 VDC and Ground are available in addition to an AUX DELAY signal.

c. The VMM-T1 AUX output is now the DELAY timer output signal.

d. An active-high pulse is delivered to this output equal to the length of the DELAY timer

setting. See “DELAY Out (AUX Pin 1)” under EXTERNAL OUTPUT
CHARACTERISTICS.

10. FUNCTION switches:

Five sub-miniature slide switches.

a. Switches A  D are used to select the active states of each of the four input BNC connectors.

VMM-T1 User Manual 20

b. Switch E is used to select the proper pulse energy for the shutter being driven. Switch to the

HIGH (up) position for 35mm and larger aperture types, switch to the LOW (down) position
for all other shutter types.

11. SYNC. OUTPUT BNC.

a. Active-low output

b. Output for shutters equipped with the SOLID STATE SYNCHRONIZATION SYSTEM

option.

c. The shutter’s internal synchronization circuit sets the BNC to an active level when the

synchronization circuit becomes energized.

d. The output goes active when the shutter reaches 80% of full open, and goes to the non-active

state when the shutter reaches 20% closed.

e. The front panel SYNC. ACTIVE LED illuminates when the synchronization sensor is active.

12. PULSE INPUT BNC:

Allows control of the shutter exposure and frequency from a TTL signal source.

a. The pulse duration determines the shutter exposure interval.

b. The frequency of the signal presented to this input determines the frequency of shutter

exposures.

c. This input can be set active-high or active-low by FUNCTION switch B. See “FUNCTION

SELECT” under GENERAL CHARACTERISTICS.

VMM-T1 User Manual 21

Figure 3 – VMM-T1 Rear Panel Operator Controls and I/O

VMM-T1 User Manual 22

Operating Basics

The HIGH energy setting must be used for only 35 mm and larger
aperture shutters. Use the LOW setting for all other UNIBLITZ shutters.
Use of the HIGH position for shutter apertures smaller than 35mm could

cause irreparable damage to the shutter used and will void the shutter’s

warranty.

CAUTION

Please refer to the section describing the “Initial Operation and Testing” for initial preparation to put
the VMM-T1 into operation.

Function Switches

There are 5 sub-miniature slide switches located on the Rear Panel and labeled “FUNCTION”.

1. Switches A – D allow the user to select the active state of the four BNC inputs.

a. When the switch actuators are in the DOWN position the corresponding BNC input will be

TTL active-low. This indicates that a logic “0” (0 volts) will activate the selected input. The

switches must be in the active-low position to activate the inputs from a remote activate
cable such as the 710R (handheld) or the 710R/F (foot activated).

b. In the UP position the selected BNC input will become TTL active-high. This indicates that

logic “1” (+5 volts) will activate the selected input.

2. Switch E selects HIGH/LOW pulse energy.

a. HIGH energy is required to operate 35mm and larger aperture shutters.

b. In the DOWN position the pulse energy is selected LOW.

c. When the switch actuator is in the UP position the pulse energy is selected HIGH.

Gate Input

The GATE INPUT BNC is used in conjunction with the TRIGGER INPUT BNC. This allows the user
to select one or a finite number of trigger pulses to trigger the controller from a continuous stream of
pulses presented at the TRIGGER INPUT. Please see Figure 4. The following description assumes the
GATE INPUT is selected active-high (FUNCTION switch “D” in the UP position) and the TRIGGER
INPUT is selected to the active-low state (FUNCTION switch “A” in the DOWN position).

When a stream of trigger pulses is sent to the TRIGGER INPUT and the GATE INPUT is in the HIGH
state (TTL logic “1”, +5V), the VMM-T1 will operate as described in the “OPERATOR CONTROLS”
section.

Once the GATE INPUT changes to the TTL LOW state (TTL logic “0”, 0V), all trigger signals being
sent to the TRIGGER INPUT are disabled.

VMM-T1 User Manual 23

A single TTL HIGH pulse at the GATE INPUT equal to the trigger period will allow one trigger signal

TRIGGER
SIGNAL STREAM
(ACTIVE LOW)

HIGH GATE
PULSE

TWO PULSES
ALLOWED TO
TRIGGER UNIT

TRIGGER

PERIOD

TRIGGER

PERIOD

TRIGGER
SIGNAL STREAM
(ACTIVE LOW)

GATE SIGNAL
(ACTIVE HIGH)

HIGH GATE
PULSE

GATE SIGNAL
(ACTIVE HIGH)

2 TRIGGER
PULSES

(A)

(B)

LOW GATE PULSE

ACTIVE HIGH PULSE WIDTH

EQUAL TO 2X TRIGGER PERIOD

LOW GATE PULSE

ACTIVE HIGH PULSE WIDTH
EQUAL TO TRIGGER PERIOD

TRIGGER
PULSE

SINGLE PULSE
ALLOWED TO
TRIGGER UNIT

from the trigger stream to be enabled. (See Figure 4A)

If a single TTL HIGH pulse arrives at the GATE INPUT and is equal to twice the trigger period, two
trigger signals from the trigger stream will be enabled. (See Figure 4B) Therefore, the number of
trigger pulses input (or GATE INPUT duration) is equal to the trigger period times the number of
exposures desired.

Please note: The VMM-T1 TRIGGER INPUT triggers the internal timers. The EXP PRESET will
determine the number of cycles which is the combination of EXPOSURE and DELAY time.

Figure 4A & 4B: Gate Input Timing Diagram

VMM-T1 User Manual 24

RS-232C Operation

Function

VMM

DB-9F

IBM

DB-9M

IBM

DB-25M

MAC

Mini-DIN-8F

VCM

RJ45

Rx

Receive Data

2 2 3 5 5

Tx

Transmit Data

3 3 2 3 6

GND

Signal Ground

5 5 7 4 4

The VMM-T1 inputs can be controlled via an RS-232C computer serial signal (COM port). From the
computer’s RS-232C serial port, connect a cable such as the Model 910RS (not supplied), the 910RSDC
(not supplied), a null modem cable, or a user-constructed cable (with connections as enumerated in the
INPUT SPECIFICATIONS) to the unit’s RS-232C interface.

Connect the Tx (transmit) from the host to the Rx (receive) on the VMM-T1 control unit. All other
lines are not used except for the ground connection. If the host contains a 25-Pin D-Sub or an 8-Pin
Mini-DIN, check the computer’s user manual to find the proper corresponding pin-outs. In most cases
the corresponding 25-Pin D-Sub pin-out and MAC 8-Pin Mini-DIN are as follows:

General Pin-Outs for 25-Pin D-Sub and MAC 8-Pin Mini-DIN

All other pins not used. Be sure to connect the Tx pin, Pin 3, from the IBM 9-Pin D-Sub (or Pin 2 from
the 25-Pin D-Sub) male connector to the Rx pin, Pin 2, of the VMM-T1 9-pin D-SUB female connector,
located on the rear panel, for proper operation. Connect all other functions by type as indicated above.
By sending the proper commands the unit will respond by activating the proper functions.

The RS-232C Test Program listed elsewhere in this manual will allow operation of the VMM-T1 from
the computer keyboard.

Activation of the EXPOSURE and DELAY times with a TRIGGER command through the RS-232C
interface can be de-activated as follows:

a. RESET command from the control unit's front panel

b. Through the RESET INPUT BNC on the rear panel

c. Reset command through the RS-232C

When an open command is sent to the VMM-T1 controller, a RESET command will not close the
shutter. The shutter must be closed with a CLOSE command. The VMM-T1 controller trigger

command from the RS-232C is utilized to trigger the built in timers.

VMM-T1 User Manual 25

Up to eight VMM-T1 controllers can be daisy-chained together (connected through the same serial port)

Address Select Switch

using the 910RSDC cable. One cable is required for each controller in the chain.

Figure 5 illustrates connecting two controllers from a single serial port. Once connected, each unit will
require a unique address in the chain. This is accomplished by adjusting the octal switch beneath the 9­pin D-SUB connector on the rear panel to the desired command range. See “ADDRESS SELECT”
under GENERAL CHARACTERISTICS in the SPECIFICATIONS section for a complete listing of the
command range for each octal switch position. The specific command range set will decode commands
sent via the serial port. A set of “ALL” commands is also available to simultaneously control all units
connected to the serial port.

Figure 5: VMM-T1 Daisy-Chain Cable Configuration

VMM-T1 User Manual 26

RS-232C Test Program

The following is a test program written to test the input commands to the RS-232 interface of the VMM­T1 controller. This program and LabView programs (not listed) are available by contacting Vincent

Associates at our web site (www.uniblitz.com), via e-mail ([e-mail]), or calling
[phone]. Other programs may be available, please contact technical support for further
information.

REM PROGRAM TO SEND COMMAND PULSES TO RS232C INTERFACE AND VMM-T1
REM WRITTEN BY STEVE PASQUARELLA, VINCENT ASSOCIATES.
REM LAST REVISION 7/29/99 BY RICHARD ST.LOUIS
REM COMPUTER LANGUAGE USED – Microsoft Quick Basic ver. 4.0

CLS 0
K = -1
WHILE K
OPEN "COM1:9600,N,8,1,CS0,DS0" FOR RANDOM AS #1
J = 64
C$ = "X"

MENU: PRINT
PRINT
PRINT
PRINT "WAITING FOR KEYSTROKE COMMAND "
PRINT "TYPE:"
PRINT " VMM-T1 "
PRINT " --------- "
PRINT " O - OPEN Shutter "
PRINT " C - CLOSE Shutter "
PRINT " T - TRIGGER Control "
PRINT " R - RESET Control "
PRINT " G - OPEN Aux-Out "
PRINT " F - CLOSE Aux-Out "
PRINT
PRINT " S - SET Octal Switch Address "
PRINT " (Current Starting Decimal # ="; J; ")"
PRINT " (Current Octal Address Value = "; C$; ")"
PRINT
PRINT " Q - QUIT Program "
PRINT
PRINT

START: A$ = INKEY$
IF A$ = "O" OR A$ = "o" THEN
PRINT #1, CHR$(J);
PRINT "SHUTTER OPEN COMMAND SENT"

VMM-T1 User Manual 27

GOSUB TIMEOUT
GOTO MENU
ELSEIF A$ = "C" OR A$ = "c" THEN
PRINT #1, CHR$(J + 1);
PRINT "SHUTTER CLOSE COMMAND SENT"
GOSUB TIMEOUT
GOTO MENU
ELSEIF A$ = "T" OR A$ = "t" THEN
PRINT #1, CHR$(J + 2);
PRINT "CONTROL TRIGGER COMMAND SENT"
GOSUB TIMEOUT
GOTO MENU
ELSEIF A$ = "R" OR A$ = "r" THEN
PRINT #1, CHR$(J + 3);
PRINT "CONTROL RESET COMMAND SENT"
GOSUB TIMEOUT
GOTO MENU
ELSEIF A$ = "G" OR A$ = "g" THEN
PRINT #1, CHR$(J + 4);
PRINT "AUX OPEN COMMAND SENT"
GOSUB TIMEOUT
GOTO MENU
ELSEIF A$ = "LF" OR A$ = "f" THEN
PRINT #1, CHR$(J + 5);
PRINT "AUX CLOSE COMMAND SENT"
GOSUB TIMEOUT
GOTO MENU
ELSEIF A$ = "Q" OR A$ = "q" THEN
K = 0
PRINT "PROGRAM TERMINATED"
ELSEIF A$ = "S" OR A$ = "s" THEN
INPUT "ENTER OCTAL ADDRESS 0 - 7 or X: ", B$
GOSUB ADDRESS
GOTO MENU
ELSE GOTO START
END IF
WEND
END

TIMEOUT: FOR I = 1 TO 100: NEXT I
CLS 0
RETURN

ADDRESS: IF B$ = "X" OR B$ = "x" THEN
J = 64
C$ = "X"
ELSEIF B$ = "0" THEN

VMM-T1 User Manual 28

J = 128
C$ = "0"
ELSEIF B$ = "1" THEN
J = 144
C$ = "1"
ELSEIF B$ = "2" THEN
J = 160
C$ = "2"
ELSEIF B$ = "3" THEN
J = 176
C$ = "3"
ELSEIF B$ = "4" THEN
J = 192
C$ = "4"
ELSEIF B$ = "5" THEN
J = 208
C$ = "5"
ELSEIF B$ = "6" THEN
J = 224
C$ = "6"
ELSEIF B$ = "7" THEN
J = 240
C$ = "7"
ELSE J = 64
C$ = "X"
END IF
PRINT "STARTING ASCII DECIMAL # = ", J
GOSUB TIMEOUT
CLS 0
RETURN

VMM-T1 User Manual 29

Shutter Frequency of Operation

The repeat exposure specification as listed in this manual is specified at 35 ms. This is an optimum
value to ensure enough pulse energy to open any UNIBLITZ shutter. However, the VMM-T1 is capable
of operating each Vincent shutter to its maximum frequency with a slight sacrifice in shutter opening
speed. This is due to the drive circuit, which allows the pulse voltage to drop with an increase in
frequency to compensate for the heat that is developed in the shutter coil. See graphs Figure 6 and 7.

Contact the factory for specific information concerning shutter and/or drive modifications that may be
necessary for operating shutters at their maximum frequency.

Please note that fuse blowing problems, specifically shutter fuses, may be due to high frequency
operation without proper fuse selection. Due to the large number of different frequencies and duty
cycles in which the shutter is used please contact the factory for further details regarding specific fuse
selection.

Trigger Cautions and Trouble Shooting Tips

The VMM-T1 system’s capability can be greatly enhanced by external control as described previously,
however, extreme care must be taken to ensure that high voltages (see SPECIFICATIONS) are not
inadvertently switched into external control inputs. Also note that large negative voltages can cause
irreparable damage to the unit's internal circuitry. Exercise extreme caution.

Visual inspection of a fuse is 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.

Particular shutter units respond to different minimum pulse widths. For example, a standard VS25
shutter with Teflon coated shutter blades has a minimum exposure pulse of 6 msec. If the timing or
pulse width is set for an exposure pulse width less than 6 msec the shutter may not open fully. If the
unit still does not operate properly, when using the proper pulse width, please contact Vincent
Associates immediately.

Please note that if a Vincent Model 910RS RS-232C interface cable is not being used, a standard RS­232C cable will not work with these controls. A “NULL MODEM” type interface cable must be used
in this situation.

When operating shutters with apertures larger than 25 mm, please be sure that the FUNCTION slide
switch “E” is set to the upper position. Failure to make this change may result in incomplete shutter
opening and causing immediate shutter close resulting in probable loss of capture.

When operating shutters with a 25 mm aperture or smaller, please be sure that the FUNCTION slide
switch “E” is set to the lower position. Failure to observe this setting is likely to cause damage to the
shutter, thereby voiding the shutter warranty.

The shutter may be shipped with a small circular white plastic protective ring around the male connector
contacts. This ring protects the male connector’s contacts during shipping. It is held on by friction and
must be removed prior to attaching the female end of the Model 710C cable to the shutter. This ring can
be removed by gently pulling up off the top of the connector. No tools are required.

VMM-T1 User Manual 30

Pulse Voltage Graphs

Pulse Voltage vs. Exposure Time at Select Frequencies

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

0 5.0 8.0 10.0 13.0 15.0 18.0 20.0 23.0 25.0 28.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0

Exposure Time (msec.)

Pulse V oltage

5 Hz.
10 Hz.

15 Hz.

20 Hz.

25 Hz.

30 Hz.

35 Hz.

40 Hz.

Pulse Voltage vs. Frequency at Select Exposure Time

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

0 5.0 8.0 10.0 13.3 15.0 17.2 20.0 22.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0

Frequency

Pulse V oltage

1 msec.

5 msec.

10

msec.

15

msec.

20

msec.

25

msce.

30

msec.

35

msec.

40

msce.

Figure 6: Pulse Voltage vs. Exposure Time

Figure 7: Pulse Voltage vs. Frequency

VMM-T1 User Manual 31

Dimensions

The overall dimensions of the VMM-T1 are shown in Figure 8.

Figure 8: Overall VMM-T1 Dimensions

Maintenance

Proper care and maintenance of the unit should be taken as with any electronic instrument.

With the exception of line and shutter fuse replacement, there are no user-serviceable parts outside or
inside of the VMM-T1.

There is no service to be performed by the user other than exterior inspection for visible damage of the
case and line cord and exterior cleaning.

The only user service that can be performed is Fuse Replacement or Line Voltage Change procedures.

Although the stability of the drive voltage is checked and calibrated prior to shipment, it may become
necessary to make some minor adjustments to the operating systems of the VMM-T1 over time.

It is highly recommended that if a problem is suspected that the unit be returned to the factory for
checkout, adjustment and calibration. Failure to do this may damage the unit’s circuitry and/or
functionality.

VMM-T1 User Manual 32

General Care

CAUTION

To prevent getting moisture inside the unit during external cleaning,
use only enough liquid to dampen the cloth or applicator.

Perform routine inspection of the VMM-T1 on a regular basis.

Inspect the outer case for any signs of visible damage

Pay particular attention to the condition of the AC line cord. If there are any signs of damage or
deterioration, replace it immediately with an approved line cord.

Follow the Exterior inspection and Cleaning Procedures elsewhere in this manual.

Inspection and Cleaning

Inspection – Exterior

Inspect the outside of the VMM-T1 for damage, wear, and missing parts. A device that appears to have
been dropped or shows other signs of exterior damage should be checked thoroughly to verify correct
operation and performance. If damage is suspected, please return the unit to the factory for repair –
there are no user-serviceable parts.

Cleaning Procedure – Exterior

1. Remove loose dust on the outside of the VMM-T1 with a lint free cloth.

2. Remove remaining dirt with a lint free cloth dampened in a general purpose detergent-and-water

solution. Do not use abrasive cleaners.

Inspection – Interior

Do not attempt to open the case of the VMM-T1 under any circumstances. There are no user­serviceable parts inside the case.

Cleaning Procedure – Interior

Do not attempt to open the case of the VMM-T1 under any circumstances. There are no user­serviceable parts inside the case.

VMM-T1 User Manual 33

Specifications

Name

Description

Exposure Interval

 0.1 msec (100 µS) to 9999 sec (2.8 hrs) in

five decade ranges

 Variable within each decade with 4-digit

pushwheel switches.

Delay interval

 0.1 msec (100 µS) to 9999 Sec (2.8 hrs) in

five decade ranges

 Variable within each decade with 4-digit

pushwheel switches.

Repeat Exposure

 01 to 99 exposures variable or continuous (00)

selectable with EXP. PRESET 2-digit
pushwheel switches

 35 msec minimum between exposures (100

msec minimum for 35 mm and larger aperture
shutters).

Accuracy

 Exposure and Delay ± 0.5% all ranges

(crystal time base)

 Maximum 20 µS propagation delay from

application of trigger to pulse applied to driver

 Typical 5 - 7 µS delay.

Shutter Drive

 Continuously variable frequency of exposures

from DC to the shutter's maximum rate

 Maximum peak pulse power 400 W
 Pulse voltage 70 VDC
 Pulse current 5.7 A (test conditions: VS35

shutter, standard 5 Volt, 12 ohm coil cycled
with 20 ms exposure at 5 Hz).

System Characteristics

VMM-T1 User Manual 34

External Input Characteristics

Name

Description

TRIGGER INPUT (BNC)
Rear Panel

 Input impedance 50K ohms
 Source current 100 µA
 Active-low or active-high selectable with FUNCTION

slide-switch A

 Minimum pulse width required to ensure triggering:

100 µS

 TTL compatible:

- Minimum high-level +2.0 VDC

- Maximum low-level +0.8 VDC

- Sink current 1.0 µA

RESET INPUT (BNC)
Rear Panel

 Input impedance 50K ohms
 Source current 100 µA
 Active-low or active-high selectable with FUNCTION

slide-switch C

 Minimum pulse width required to ensure reset: 100 µs
 TTL compatible

- Minimum high-level +2.0 VDC

- Maximum low-level +0.8 VDC.

- Sink current 1.0 µA

GATE INPUT (BNC)
Rear Panel

 Input impedance 50K ohms
 Source current 100 µA
 Active-low or active-high selectable with FUNCTION

slide-switch D

 Minimum pulse width determined by period of signal

applied to TRIGGER Input

 Maximum pulse width determined by multiple of

TRIGGER signal period

 TTL compatible

- Minimum high-level +2.0 VDC

- Maximum low-level +0.8 VDC

- Sink current 1.0 µA

VMM-T1 User Manual 35

Name

Description

PULSE INPUT (BNC)

 Input impedance 50K ohms
 Source current 100 µA
 Active-low or active-high selectable with FUNCTION

slide-switch B

 Minimum pulse width determined by applicable shutter
 Maximum pulse width unlimited
 TTL compatible

- Minimum high-level +2.0 VDC

- Maximum low-level +0.8 VDC

- Sink current 1.0 µA

RS-232C Input
(DB-9 Female)

 “Null Modem” type input
 Baud rate 9600
 8 Data bits
 1 Stop bit
 No parity
 No flow control
 Command transmission time: 0.94 msec
 4 commands available
 1 global address location for commands
 8 local address locations for commands (see

"ADDRESS SELECT" specification for switch settings
of local address locations). Also see RS-232 Test
Program.

Global Address Codes

RS232C Commands

Decimal HEX Octal Binary ASCII

Open

64 40 100 01000000 @

Close

65 41 101 01000001 A

Trigger

66 42 102 01000010 B

Reset

67 43 103 01000011 C

VMM-T1 User Manual 36

External Output Characteristics

Name

Description

PULSE OUTPUT (BNC)
Rear Panel

 Active-low only
 Source impedance: 1K ohms
 Maximum source current: 5.0 mA
 Maximum sink current: 100 mA
 Maximum (low-level) output voltage: 0.5 VDC
 Minimum high level: +4.5 VDC
 Duration time determined by width of active

pulse applied to PULSE Input or Exposure
Time setting

SYNC. OUTPUT (BNC)
Rear Panel

 Active-low only
 Source impedance: 1K ohms
 Maximum source current: 6.8 mA
 Maximum sink current: 25.0 mA
 Maximum (low-level) output voltage 0.5 VDC
 Minimum High Level: +4.5 VDC
 This output provided for shutters equipped

with the Electronic Synchronization (SYNC)
option.

Delay Out (AUX Pin 1)
Rear Panel

 Active-high only
 Source impedance: 1K ohms
 Maximum source current: 5.0 mA
 Maximum sink current: 100 mA
 Maximum (high-level) output voltage: +5.0

VDC.

 Duration time determined by Delay Time

setting. (Delay interval can be set before
exposure or after with PRE/POST toggle
switch.)

+5V (AUX Pin 3)
Rear Panel

 +5.0 volt DC regulated output provided for use

in remote switching and/or control circuits.

GND (AUX Pin 2)
Rear Panel

 0 VDC ground reference provided for AUX

output pins (located on rear panel).

General Characteristics

Name

Description

VMM-T1 User Manual 37

POWER Indicator
Front Panel

 Red 3mm LED indicates when unit is powered.


DRIVER ACTIVE Indicator
Front Panel

 Red 3mm LED indicates when the shutter

driver circuit is active.

 LED will illuminate with or without the load of a

shutter's actuator coil.

SYNC. ACTIVE Indicator
Front Panel

 Green 3mm LED indicates when a shutter's

Electronic Synchronization (SYNC) circuit is
active.

 SYNC. OUTPUT will be low when this LED is

on.

 Indicator will only operate if the shutter used is

equipped with the solid-state sync. sensor.

EXPOSURE Indicator
Front Panel

 Green 3mm LED indicates when EXPOSURE

time base is active.

DELAY Indicator
Front Panel

 Green 3mm LED indicates when DELAY time

base is active.



ADDRESS Select

(Octal Rotary Switch)

Allows selection of individual (local) address
locations of commands sent by a PCs serial port.

ADDRESS Switch Positions (x = don't care or
global)

RS232 Commands

X 0 1 2 3 4 5 6 7

Open

64 128 144 160 176 192 208 224 240 (Decimal)

Close

65 129 145 161 177 193 209 225 241 (Decimal)

Trigger

66 130 146 162 178 194 210 226 242 (Decimal)

Reset

67 131 147 163 179 195 211 227 243 (Decimal)

FUNCTION Select

Rear panel

 Slide-switches A, B, C, and D allow selection

of active-low or active-high states for the four
BNC inputs and outputs

 Slide-switch E allows the selection of

additional pulse energy for 35 mm and larger
shutters.

 These 5 switches are banked together.

VMM-T1 User Manual 38

* THIS IS A DISCONTINUED PRODUCT*

Name

Description

Position

Function

Slide Switch Lower Upper

TRIGGER INPUT

A active-low active-high

PULSE INPUT

B active-low active-high

RESET INPUT

C active-low active-high

GATE INPUT

D active-low active-high

PULSE ENERGY

E 25mm & smaller 35mm & larger

Power Requirements

 115 VAC ±5%, 60 Hz or 230 VAC ±5%, 50

Hz., 60 watts

 Selected manually by rotating the fuse holder

of the AC power entry module. See "Voltage
Change" instructions.

Fuse Requirements

 Two 0.5 Amp, “T” slow blow, 3AG for 115 VAC

line

 Two 0.25 Amp, “T” slow blow, 3AG for 230

VAC line

 One 0.6 Amp, “T”, slow blow, 5 x 20 mm for

Shutter actuator coil

 See "LINE FUSE REPLACEMENT"

instructions for AC power fuse change

Operating Temperature

 +5° C to +40° C (+41° F to +104° F)

Storage Temperature

 -20º C to +55ºC (-4° F to +131° F)

Size (HWD)

 2.638" x 5.354" x 8.186" (67.0 x 136.0 x 207.9

mm)

Weight

 3.50 lbs (1.59 kg)

Relative Humidity

 80% at +31º C (+88 º F) ambient decreasing

linearly to 50% at +40 º C (104 ºF)

Pollution

 Degree 2

Overvoltage

 Category II

VMM-T1 User Manual 39

* THIS IS A DISCONTINUED PRODUCT*

Name

Description

Supplied Accessories

 Interconnect Cable Model 710C, 3 meters
 AC Line Cord, IEC Type, North America
 Two 0.25 Amp, 3AG, 230 VAC line fuses
 User Manual
 Checklist

Optional Accessories

(Not Supplied)

 Model 710R Remote handheld trigger cable for

use with active-low BNC

 Model 710R/F Remote footswitch trigger cable

for use with active-low BNC

 Model 910RSDC RS-232C interconnect cable

for daisy-chain applications (One (1) cable
required per unit in the chain)

 Model 910RS RS232C interconnect cable for

serial port

VMM-T1 User Manual 40

* THIS IS A DISCONTINUED PRODUCT*

Index

+5V, 23, 27, 43

115 VAC, 11, 13, 14, 46
115 VAC 60Hz. /230 VAC 50Hz, 23

230 VAC, 11, 13, 14, 46
25 mm, 35
25-Pin D-Sub, 29

35mm, 23, 26

5-position rotary switch, 18

710R, 26
7-pin female connector, 14, 22
7-pin female receptacle, 14
7-pin male connector, 14
7-pin male plug, 22
7-pin SHUTTER connector, 13

8-Pin Mini-DIN, 29
8-position octal rotary switch, 21

910RS, 29, 35
910RSDC, 29, 30

9-pin D-SUB female, 29

AC input module, 9, 11, 12
AC module, 11
Accuracy, 40
active-high, 22, 23, 24
active-low, 22, 23, 24
ACTUATE Switch, 17
address, 30
ADDRESS select, 21, 44
addressable, 9
ALL commands, 30
AUX, 17, 43
AUX DELAY, 23
AUX output, 10, 23, 43
AUX Pin 1, 23
Auxiliary output, 9
Auxiliary Terminal, 23

Baud rate, 42
BNC, 14, 21, 22, 23, 24, 26, 41, 42, 43

Caution, 35

Cleaning Procedure – Exterior, 39
Cleaning Procedure – Interior, 39
Close, 42, 44
close command, 17, 18, 22, 30, 33
COM port, 29
Covers, 5

daisy-chain, 9, 10, 21, 30
DB-9, 21
defects, 10
delay, 10, 40
DELAY, 9, 16, 17, 21, 22, 23, 27, 29
DELAY Indicator, 44
delay interval, 10, 16, 17, 18, 40, 43
DELAY LED, 16
DELAY MULTIPLIER, 16, 18
Delay Out, 23, 43
DELAY TIME SELECT, 10
DELAY timer, 17
DELAY TIMER SELECT, 16
Digital Multi-Meter, 35
Dimensions, 38
DMM, 35
DMM (Digital Multi-Meter), 15

Electric Overload, 5
Electric Shock, 5

electronic sync. sensor, 16
EXP PRESET, 27
EXP. PRESET, 9, 10

EXP. PRESET SELECT, 16
Explosive Atmosphere, 5

EXPOSURE, 10, 21, 22, 27, 29
EXPOSURE and DELAY timers, 17
exposure cycles, 16
EXPOSURE Indicator, 44
exposure interval, 16, 17, 24, 40
EXPOSURE LED, 16
EXPOSURE MULTIPLIER, 16
Exposure Preset, 9
EXPOSURE timer, 16
EXPOSURE TIMER SELECT, 16
EXPOSURE timing range, 16
External Input Characteristics, 41
EXTERNAL OUTPUT CHARACTERISTICS, 23

Features, 9
Front Panel Operator Controls, 16
FUNCTION Select, 44

VMM-T1 User Manual 41

FUNCTION SELECT, 24
FUNCTION slide switch, 35
FUNCTION switch B, 24
FUNCTION switch C, 22
FUNCTION switch D, 22
function switches, 23
Function Switches, 26
fuse, 5, 11, 17, 23, 35, 46
fuse nuisance blowing, 17
fuse selection, 35

gate, 22
GATE INPUT, 9, 21, 22, 26, 41, 46
General Care, 39
GENERAL CHARACTERISTICS, 21, 24
Getting Started, 8, 9
GND, 23, 29, 43
Graphs, 37
ground, 5, 14, 23, 29, 43

high frequency operation, 35
HIGH/LOW, 26

IBM 9-Pin D-Sub, 29
IEC plug, 23
initial inspection, 10
Initial Operation, 14
Injury Precautions, 5
Input Module, 23
input receptacle, 9
Inspection – Exterior, 39
Inspection and Cleaning, 39
Introduction, 10

key, 16
keyboard, 29

label, 11
LED, 11, 14, 16
line fuse, 9, 11, 23
Line Fuse Replacement, 11, 13

MAC 8-Pin Mini-DIN, 29
Maintenance, 38
maximum frequency, 35
minimum exposure, 15, 35
minimum pulse widths, 15, 35
Model 710C, 10, 22, 36

N.C., 18
N.O., 18
N.O./N.C. switch, 14, 17, 18, 21, 22
N.O./N.C. Toggle switch, 17
Normally Closed, 18

Normally Open, 18
Notes, 20
NULL MODEM, 35
null modem cable, 29

octal switch, 30
On/Off Switch, 5
Open, 42

open command, 17, 18, 22, 30
Operating Basics, 8, 26

Operating Temperature, 46

Operator Controls, 8, 16

Optional Accessories, 48
Overvoltage, 47

parity, 42

Pin C, 22
Pin D, 22
Pin E, 22
Pin F, 23
Pin H, 23
Pollution, 47
POST mode, 17
Power Cord, 5
POWER Indicator, 44
Power LED, 11, 14, 17
Power Requirements, 46
Power Source, 6
power switch, 9, 23
PRE mode, 17
PRE or POST exposure delay, 10
PRE/POST Switch, 17
Product Damage Precautions, 6
pulse duration, 24
pulse energy, 23, 26, 35, 46
pulse in, 21, 24, 42, 43
PULSE INPUT, 21, 46
PULSE OUT, 21, 43
PULSE OUTPUT, 21
Pulse Voltage Graphs, 37
pushwheel switches, 10, 16

Rear Panel Operator Controls, 21
re-configure AC input, 11
Relative Humidity, 46
remote, 26
repeat exposure, 35, 40
reset, 10, 16, 17, 18, 21, 22, 41, 42, 44
reset command, 17, 18, 29, 30
RESET INPUT, 29, 46
RESET switch, 17, 18
RS-232C, 10, 17, 18, 21, 29, 35, 42
RS232C Commands, 42
RS-232C Operation, 29

VMM-T1 User Manual 42

RS-232C Test Program, 29, 32
Rx, 29

Safety, 5
Safety Terms and Symbols, 7
serial port, 10, 21, 29, 30, 44
Shutter, 17, 22, 32, 35, 40, 46
SHUTTER ACTIVE, 14
Shutter Actuator Coil Drive Output, 22
Shutter Actuator Coil Drive Return, 22
shutter drive, 10, 17, 44
Shutter Frequency of Operation, 35
shutter fuse, 35
SHUTTER FUSE, 17
shutter fuse replacement, 13, 15
Shutter Ground, 23
shutter interconnect cable, 10
SHUTTER Output, 22
Size, 46
Solid State Synchronization, 14, 16
SOLID STATE SYNCHRONIZATION SYSTEM, 23
Specifications, 40
Start Up, 10

Stop bit, 42
Storage Temperature, 46
Supplied Accessories, 48

Suspected Failures, 6
Switch E, 23, 26
Switches A – D, 26
Switches A-D, 23
SYNC, 14
SYNC ACTIVE, 14
SYNC ACTIVE LED, 14
Sync Ground, 22
Sync Power Output, 23

SYNC., 16, 23, 24, 43, 44
SYNC. ACTIVE Indicator, 16, 44

Sync. Detector Transistor Output, 22
SYNC. OUTPUT, 44
System Characteristics, 40

T132 controller, 9
Teflon, 35
timer output signal, 23
timer range, 10
Trigger, 42
TRIGGER, 22, 29
TRIGGER INPUT, 46
Trigger Caution, 35
trigger command, 17, 18, 22
trigger edge, 21
trigger input, 16
TRIGGER INPUT, 21, 22, 26, 27, 41
TRIGGER INPUT BNC, 22
trigger pulses, 22
trigger signal, 10
Trouble Shooting Tips, 35
TTL, 24
TTL active-high, 26
TTL active-low, 26
TTL HIGH, 27
TTL LOW, 27
Tx, 29
Tx pin, 29

user-serviceable parts, 15

Ventilation, 6
Visual inspection, 35
VMM-T1, 10, 14, 16, 17, 19, 21, 22, 23, 26, 27, 29, 30, 32,

35, 43

Voltage Change, 11, 12
VOLTAGE CHANGE, 23
VS25, 35

Warranty, 3
WARRANTY, 26
Weight, 46
Wet/Damp Conditions, 5
white plastic protective ring, 36

VMM-T1 User Manual 43