FSR HUDDLEVU HV-CTL Installation guide

INSTALLATION AND OPERATING GUIDE
Based on Firmware version 1.09
43039 LIT1455C
Video Products Group
HV-CTL CONTROLLER

2
Huddle-V U
COMPLIANCE AND SAFETY
PROPRIETARY INFORMATION
All information in this manual is proprietary to and the property of FSR Inc. This publication is protected
by the Federal Copyright Law, with all rights reserved. No part of this document may be reproduced, tran-
scribed, or transmitted, in any form or by any means, without prior explicit written permission from FSR Inc.
OPERATOR’S SAFETY SUMMARY
The general safety information in this summary is for operating personnel.
Read Instructions. Read and understand all safety and operating instructions before using this equipment.
Keep the instructions handy.
Removal of the top cover may expose dangerous voltages. To avoid personal injury, disconnect all power
sources before removing the top cover. Do not operate the unit with the cover removed.
Power Source:
This product is intended to operate from the power source detailed in the specication section of this manual.
Do not use any other power source or exceed voltage limits.
Grounding the Product:
This product is grounded through the grounding conductor of the power cord. To avoid electrical shock, plug
the power cord into a properly wired receptacle before connecting to the product input or output terminals.
Use the Proper Power Cord. Use only the power cord and connector specied for your product. Use only a
power cord that is in good condition. Refer cord and connector changes to qualied service personnel.

3Huddle-VU
TABLE OF CONTENTS
COMPLIANCE AND SAFETY�������������������������������������������������������������������������������������������������������������2
PROPRIETARY INFORMATION .............................................................................................................................2
OPERATOR’S SAFETY SUMMARY....................................................................................................................... 2
INTRODUCTION�����������������������������������������������������������������������������������������������������������������������������������5
FEATURES:................................................................................................................................................................ 5
APPLICATIONS: ........................................................................................................................................................5
OPERATION�������������������������������������������������������������������������������������������������������������������������������������������7
HV-CTL HUDDLEVU CONTROLLER ����������������������������������������������������������������������������������������������8
RS-232 PROTOCOL ���������������������������������������������������������������������������������������������������������������������������� 11
HV-CTL BEHAVIOR ............................................................................................................................................... 11
LOCKING/UNLOCKING SWITCH INPUTS ....................................................................................................... 11
POWERING THE MONITOR ON/OFF SERIALLY.............................................................................................. 12
HUDDLE VU SERIAL COMMANDS ................................................................................................................... 13
HV-CTL REQUEST LIST QUICK REFERENCE............................................................................................. 13
REQUEST/RESPONSE FORMAT ..................................................................................................................... 14
COMMAND REQUEST SYNTAX:................................................................................................................... 14
COMMAND REQUEST COMMENT FIELDS................................................................................................. 14
ACKNOWLEDGING RECEIPT OF COMMANDS.......................................................................................... 15
ERROR RESPONSE............................................................................................................................................ 15
CONNECTION REQUEST ................................................................................................................................ 16
HELP REQUEST................................................................................................................................................. 17
LOCK REQUEST................................................................................................................................................ 19
POWER REQUEST.............................................................................................................................................20
RELAY REQUEST.............................................................................................................................................. 21
RESPONSE REQUEST.......................................................................................................................................22
SERIAL BIT RATE REQUEST..........................................................................................................................23
STATUS REQUEST ............................................................................................................................................24
UNLOCK REQUEST.......................................................................................................................................... 25
VERSION REQUEST .........................................................................................................................................26
VERBOSE REQUEST ........................................................................................................................................ 27
RS-232 PINOUTS AND CABLING ����������������������������������������������������������������������������������������������������28
DB-9 CONNECTION ...............................................................................................................................................28
SPECIFICATIONS�������������������������������������������������������������������������������������������������������������������������������30
HV-CTL .................................................................................................................................................................... 30

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WARRANTY AND RETURN INFO��������������������������������������������������������������������������������������������������������������32
WA R R A N T Y P OL IC Y .........................................................................................................................................................32
SERVICE AND RETURN AUTHORIZATION ..................................................................................................................32
CONTACT INFORMATION ................................................................................................................................................32

5Huddle-VU
INTRODUCTION
The HuddleVU system allows for multiple users to share and view their laptops, tablets, and smart phones
screens on a main display. Unlike conventional presentation systems, anyone participating can lead the
presentation at any given time at the push of a button. LED’s indicate which user is currently live and when
the system is busy.
HuddleVU creates the ideal environment for people to view and share ideas. The systems include all the
necessary video switching equipment, control hardware, display power control and color-coded captive HDMI
cables. It is a very simple yet effective system to quickly install and use.
There are a variety of model styles available:
A single table box system employs a single FSR HV-T6 table box that allows 1 to 4 users to
plug in and power their laptops or other input devices and simply push a button to display their
desktop information on the main display. Any user can switch to their own laptops, tablets, and
smartphones at any time simply by pushing their button on the T6 housing.
Individual HV systems accommodate from 3 to 7 users depending on the model. Each user has
their own FSR HV-T3 table box to plug into. Each table box contains a pullout HDMI cable and
an AC outlet. A single push of a button on each T3 is all that is needed to display the laptop or
iPad’s desktop information onto the main display. An HV-CTL Controller and up to two DV-
HSW4K-41 HDMI Switchers are included on all systems. The HV-CTL has a power switch, two
AC outlets to power the DV-HSW4K-41 HDMI Switchers and an additional AC outlet to power
the main display. The HV-CTL is the main termination point for the system components. When
four or less inputs are used the HV-CTL switching can be serially controlled by an external
control system.
FEATURES:
• Single button press user selection
• No software or programming required
• Simple installation
• Create attractive workspaces
• Hardware and cables included
• Conversion kits available for VGA and audio input
• Systems with four or less inputs can be controlled by an external control system
APPLICATIONS:
• Classrooms
• Libraries
• Conference Rooms
• Educational Facilities
• Corporate Teleconference Rooms
• Learning Centers
• Training Rooms

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Huddle-VU

7Huddle-VU
OPERATION
Power up the system via the power switch located on the AC side of the HV-CTL Control Unit. The Green
LEDs on the Table Boxes (referred to as "TB" from this point on) will ash for approximately 3 seconds and
then turn off. The system is now in the IDLE state and is ready to accept switch inputs/presses from the table
boxes. Note that the monitor and HDMI switchers are not yet turned on and no switch inputs are honored
while the LEDs are ashing.
From the IDLE state, press any one of the available switches on any of the TB's to activate the system. The
monitor and HDMI switcher(s) will be immediately powered ON and all TB Green LEDs will ash to
indicate the system is powering up. Upon release of the selected switch, the selected switch’s corresponding
Green LED will ash at a fast rate for a short duration before turning steady green (to indicate that particular
selection was recognized). All other TB LEDs remain Red and the HDMI source from that input is selected
and is routed to the monitor. While the green LEDs of the selected input switch are ashing, no other switch
selections are honored. The unit is now in the ON state and is ready to accept additional switch presses
allowing the users to switch their source's program material to the monitor. (There is no unconnected state for
the HDMI switchers.)
Subsequent switch presses on any of the TB switches for less than 3 seconds will select that TB's source and
display it on the monitor. The Green LED will ash at a fast rate for a short duration to indicate the selection
was recognized, all other TB LEDs will go Red upon release of the switch. While the green LEDs of the
selected input switch are ashing, no other switch selections are honored. The unit remains in the ON state.
To return the system to the IDLE state: Press and hold any switch for a duration of greater than 3 seconds.
The monitor and HDMI switcher(s) will be switched OFF at the 3 second mark, all TB Red LEDs will ash
for a short time (approximately 3 seconds) and then all TB LEDs will be turned OFF indicating a return to the
IDLE state.

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HV-CTL HUDDLEVU CONTROLLER
1. HDMI switcher power outlet
2. HDMI switcher power outlet
3. Monitor power outlet
4. Power switch and circuit breaker
5. Power cord
6. T6 Left control ports
7.  T6 Right control ports
8. T3 control ports #1 with status indicator
9. T3 control ports #2 with status indicator
10. T3 control ports #3 with status indicator
11. T3 control ports #4 with status indicator
12. T3 control ports #5 with status indicator
13. T3 control ports #6 with status indicator
14. T3 control ports #7 with status indicator
15. 12Vdc relay drive output, IR output (for
future use) and status indicator
16. RS-232 data indicators
17. Con iguration DIP switch
18. HDMI Switcher #1
19. HDMI Switcher #2/Firmware Update
Port
6810 12 14
7 9 11 13 15
17
15
16
19
18
21 345

9Huddle-VU
1 2 3 4
B B
1
RGB
2
B B
RGB
4
B B
RGB
6
B B
7
RGB
3 5
T6 CONTROL
CABLES
LEFT
RIGHT
Tx Rx Tx Rx
SERIAL
12
HDMI SWITCHER CONTROL
SERIAL 1 SERIAL 2
1 2 3 4
BLUE RED
GREEN
BLK & BRN
G
N D
I
R
G
N
D
AUX OUT
B G R B
WIRE COLORS:
B
R
L
Y
I
R
R
L
Y
FSR
INDIVIDUAL TABLE BOX CONTROL CABLES
HV-CTL
EXTERNAL OUTPUT TO A RELAY (FSR IT-SACWP SWITCHED POWER OUTLET) FUTURE USE (NOT YET IMPLEMENTED)
TO HDMI VIDEO SWITCHER(S) RS-232 CONTROL INPUT(S) (FSR DV-HSW4K-41, DV-MFSS-71). SEE INDIVIDUAL MANUALS FOR DETAILS AND SECTION “RS-232 PINOUTS AND CABLING” IN THIS MANUAL. NOTE: SERIAL 2 is also used for update and external control.
Up to seven HV-T3 connections
SWITCHED AC POWER TO HDMI SWITCHER(S) (FSR MODEL(S) DV-HSW4K-41, DV-MFSS-71).
TO SYSTEM MAIN MONITOR OR PROJECTOR AC POWER
HDMI
VIDEO OUTPUTS TO SYSTEM
HDMI VIDEO
OUTPUT TO
SYSTEM
7 Pin Table Box Cable Harness Detail
Left Side Harness ("L")
(Viewed from Top)
Right Side Harness ("R")
(Viewed from Top)
Pin Wire Color Function Pin# Wire Color Function
1 Green Switch 1 (N.O.)** 1 Green Switch 3 (N.O.)* 2 Red LED 1-Green + 2 Red LED 3-Green +
3 Black LED 1-Red + 3 Black LED 3-Red +
4 Yellow Switch 2 (N.O.)** 4 Yellow Switch 4 (N.O.)*
5 Blue LED 2-Green + 5 Blue LED 4-Green +
6 Brown LED 2-Red + 6 Brown LED 4-Red +
7 Orange Ground 7 Orange Ground
T3 Table Box Cable Harness Detail
Pin Wire Color Function
1Blue Switch- (N.O.)* 2Green LED- Green + 3Red LED- Red + 4Black & Brown Ground
SWITCH
FUNCTION
1 2 3 4
DN DN
RESERVED
(DN)
RESERVED
(DN)
SET TO CASCADE TWO DV-HSW-4K SWITCHERS
TO FORM A 7x1 SWITCHING ARRANGEMENT
UP DN SET TO USE ONE DV-MFSS-71 SWITCHER
DN UP
SET TO USE TWO DV-HSW-4K SWITCHERS
INDEPENDENTLY AS SEPARATE 4X1 AND 3X1 SWITCHERS (DUAL MONITOR MODE)
UP UP RESERVED
T6 table boxes are equipped with either (2) 7 pin wire harnesses for connection to the corresponding 7 pin connectors on the HV-CTL, or (4) color coded 4 pin connectors for connection to the HV-CTL 4 pin connectors. The 4 pin style T-6 allows full flexibility when assigning T-6 switches to HV-CTL input channels. See tables on next page for pinout.
*
*
*
*
**Switches are Normally Open (N.O.) contact closure to ground. LED drive voltage is 10.5 Vdc, nominal 6 mA, current limited at LED
Captive Screw Terminal Pin Numbering
*Switches are Normally Open (N.O.) contact closure to ground. LED drive voltage is 10.5 Vdc, nominal 6 mA, current limited at LED
Captive Screw Terminal Pin Numbering
1 2 3 4
HDMI SWITCHER POWER
SWITCHED AC POWER - TOTAL CURRENT DRAW, ALL RECEPTACLES: 12A, MAX.
MONITOR POWER HV-CTL
120VAC 50/60 Hz
15 Amp Max.
RESET
OFF
FSR
4321
4321

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Huddle-VU
Black Switch / Black Heat Shrink
Pin Wire Color Function
1Green SW1 (Black)
2Red LED 1- Green +
3Black LED 1- Red +
4Orange Ground
Red Switch / Red Heat Shrink
Pin Wire Color Function
1Yellow SW2 (Red)
2Blue LED 2- Green +
3Brown LED 2- Red +
4Orange Ground
Yellow Switch / Yellow Heat Shrink
Pin Wire Color Function
1Green SW3 (Yellow)
2Red LED 3- Green +
3Black LED 3- Red +
4Orange Ground
Blue Switch / Blue Heat Shrink
Pin Wire Color Function
1Yellow SW4 (Blue)
2Blue LED 4- Green +
3Brown LED 4- Red +
4Orange Ground
PINOUT FOR T6 TABLE BOXES WITH 4 COLOR CODED WIRE
HARNESSES (SEE DRAWING ON PREVIOUS PAGE)
HARNESS COLOR CORRESPONDS TO COLOR OF T6
SELECTOR SWITCHES / HDMI CABLES

11 Huddle-VU
RS-232 PROTOCOL
HV-CTL BEHAVIOR
Power up the system via the power switch located on the AC side of the HV-CTL Control Unit. The Green
LEDS on the Table Boxes (referred to as "TB" from this point on) will ash for approximately 3 seconds and
then turn off. The system is now in the IDLE state and is ready to accept switch inputs/presses from the table
boxes. Note that the monitor and HDMI switchers are not yet turned on and no switch inputs are honored
while the LEDs are ashing.
From the IDLE state, press any one of the available switches on any of the TB's to activate the system. The
monitor and HDMI Switcher(s) will be immediately powered ON and all TB Green LEDs will ash to
indicate the system is powering up. Upon release of the selected switch, the selected switch’s corresponding
Green LED will ash at a fast rate for a short duration before turning steady green (to indicate that particular
selection was recognized). All other TB LEDs remain Red and the HDMI source from that input is selected
and is routed to the monitor. While the green LEDs of the selected input switch are ashing, no other switch
selections are honored. The unit is now in the ON state and is ready to accept additional switch presses
allowing the users to switch their source's program material to the monitor. (There is no unconnected state
for the HDMI switchers.)
Subsequent switch presses on any of the TB switches for less than 3 seconds will select that TB's source and
display it on the monitor. The Green LED will ash at a fast rate for a short duration to indicate the selection
was recognized, all other TB LEDs will go Red upon release of the switch. While the green LEDs of the
selected input switch are ashing, no other switch selections are honored. The unit remains in the ON state.
To return the system to the IDLE state: Press and hold any switch for a duration of greater than 3 seconds.
The monitor and HDMI switcher(s) will be switched OFF at the 3 second mark, all TB Red LEDs will ash
Red for a short time (approximately 3 seconds) and then all TB LEDs will be turned off indicating a return to
the IDLE state.
LOCKING/UNLOCKING SWITCH INPUTS
The user may wish to lock a specied switch input(s) from recognition. This may only be done via the
appropriate LOCK command issued via the serial interface available through User Serial Port 2. (See
command description below.)
Once a switch input is locked, the corresponding LED of locked input will ash RED for a short duration and
then go out signifying the switch input will no longer respond to presses. Any other switch inputs also locked
will also ash their corresponding LED RED in unison.
In the event the switch input that is locked is also the currently selected source input then the LED will
ash RED for a short duration as above but then return to the GREEN status, indicating the source remains
selected.
The user may restore switch input recognition of any locked input by issuing the UNLOCK command for the
specied input. Any switch inputs remaining locked will ash RED for a short duration and the specied
unlocked input’s LED will return to its lit status of RED, if not the currently selected input, or will remain
GREEN, indicating it remains as the currently selected source input.

12
Huddle-VU
The user may also LOCK or UNLOCK ALL inputs simultaneously.
POWERING THE MONITOR ON/OFF SERIALLY
The HV-CTL also allows the user to power the monitor ON/OFF via the serial interface (see command
description below).
The user may power the monitor ON via the serial PWR ON command. The behavior of the LEDs when the
monitor is powered ON or OFF is the same as that when it is powered on via the appropriate switch input
previously described. That is, when powered OFF, the HV-CTL LEDs will all ash RED for a short duration
and then all LEDs will be unlit, thereby indicating the monitor is powered OFF. When powered ON, the
HV-CTL LEDs will all ash GREEN for a short duration and then return to the status indicating the current
source input lit GREEN with all other inputs either RED or unlit (indicating the switch input is locked).

13 Huddle-VU
HUDDLE VU SERIAL COMMANDS
The HV-CTL supports a serial command interface that allows the user to congure the HV-CTL and to query
current status via User Serial Port 2. Some of the commands duplicate the functionality available via the
switch inputs, allowing the user to set the current source input and power the monitor ON or OFF. (See below
for a complete description of the available commands.)
NOTE: Serial port 1 is not active at this time�
HV-CTL REQUEST LIST QUICK REFERENCE
REQUEST DESCRIPTION
CON Connect specied input to HDMI output.
HLP Provides help information for HV-CTL command set.
LOCK Lock a specied input from switch recognition.
PWR Controls the state of the HV-CTL switched AC receptacles and AUX relay output.
R LY Controls the state of the HV-CTL switched AC receptacles and AUX relay output.
RSP Enable/Disable a response from HV-CTL to a command.
SBR Congure serial bit rate of serial port 2.
STA Request status of currently connected input and power.
UNLOCK Unlock a specied input for switch recognition.
VER Request current part # and version number.
VRB Turns on/off verbose command error reporting.

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Huddle-VU
REQUEST/RESPONSE FORMAT
All requests and responses are entirely in ASCII. The requests can be in either upper or lower case.
All requests/responses have a type eld followed by the data required for that specic request/response. All
requests are terminated with a carriage return (0Dh), which is referred to in this document as <cr> or with
a semi-colon character (;). The semi-colon permits the user to enter multiple commands in a single line of
ASCII text. All responses are terminated with a carriage return <cr> and a line feed (0Ah) which will be
referred as <lf>.
Field Separators
Fields are separated by white space, that is, any number of spaces or tabs as long as the entire command is
less than 256 characters. A <cr> terminates the command. Below is an example describing a command.
EX 05 <cr>
So the actual message would look like this:
EX 05<cr>
COMMAND REQUEST SYNTAX:
This document uses the following notation when describing the syntax of a command request:
BOLD – identies the command
lower case – identies data to be entered which is described in the text following the syntax
description
" " - entry dened within double quotes is to be entered exactly as shown
< > - entry dened within these brackets is required
[ ] - entry dened within these brackets is optional
{ } - entry dened within curly brackets must be entered at least once
| - a vertical bar denotes a logical choice of entry
* - an asterisk following either [ ] brackets or curly brackets { } above denotes that data within either
brackets or curly brackets may be entered multiple times.
COMMAND REQUEST COMMENT FIELDS
The ASCII syntax of the request protocol accommodates the ability to optionally insert comments into the
Command Request. .Comments must be enclosed within the # character. The comments are ignored by the
Huddle-VU.
Example:
Below is an example of uncommented connection commands.
CON 1<cr>
LOCK 4<cr>
The above could have comments added as follows:
CON 1 # Laptop 1# <cr>
LOCK 4 #Limited access# <cr>

15 Huddle-VU
ACKNOWLEDGING RECEIPT OF COMMANDS
Each request sent to the HV-CTL have by default two possible responses, an acknowledgement of a correct
request or an error response. The acknowledge response will be:
Ok<cr><lf >.
The HV-CTL may also be congured via command (see below) to suppress all responses. The user should
exercise care when conguring no response as the user will obviously have no feedback as to the success of
the command.
ERROR RESPONSE
In the event an invalid command is sent to the HV-CTL, it will respond with the message "ERR: unknown
command". If an invalid parameter is sent to the HV-CTL, the unit will respond with the message "ERR: "
followed by the valid syntax for the errored entry.
Example:
A connect request with an incorrect input number:
CON 8<cr>
The error response would be:
ERR: CON <"1"|"2"|"3"|"4"|"5"|"6"|"7">|<"?"><cr>
Note that the returned error response may be expanded to a more detailed version by entering verbose mode.
This mode may be turned on by issuing a VRB Y command. The expected syntax for the command will be
returned, as above, and a description of each parameter.
For example, if verbose mode were turned on and the above command issued, the response would be:
ERR: CON <"1"|"2"|"3"|"4"|"5"|"6"|"7">|<"?"><cr>
Connect specied program input
"1"|"2"|"3"|"4"|"5"|"6"|"7" Input to connect
"?" ? for inquiring currently congured source.

16
Huddle-VU
CONNECTION REQUEST
The CON request is used to connect an input to the monitor. Only one input can be connected at any one
time. The specied input causes the HV-CTL to congure the 4x1 HDMI switchers appropriately.
CON <input_to_connect> | <"?"> <cr>
Syntax:
CON <input_to_connect > | <"?"><cr>
Where:
CON Connection request header
input_to_connect = 1,2,3,4,5,6 or 7.
"?" to query the current input setting.
Example:
To connect input 2 to the monitor:
CON 2<cr>
To query the currently connected input:
CON ?<cr>

17 Huddle-VU
HELP REQUEST
The user will be able to request a list of the valid commands with descriptions and formats. The format for
this request is as follows:
HLP [cmd] <cr>
HLP [cmd] <cr>
Syntax: HLP [cmd]<cr>
Where:
HLP Help Request header
cmd optional command identier
If the optional cmd is omitted, the HV-CTL will respond with the following text message:
CON Connect specied input.
HLP Provides help information for HV-CTL command set.
LOCK Lock a specied input from switch recognition.
PWR Controls the state of the HV-CTL switched AC receptacles and AUX relay output
RLY Controls the state of the HV-CTL switched AC receptacles and AUX relay output
RSP Request or decline a response.
SBR Congure serial bit rate of serial port 2.
STA Request status of currently connected input.
UNLOCK Unlock a specied input for switch recognition.
VER Request current part # and version number.
VRB Turns on or off verbose command error reporting.
Entering HLP <cmd><cr>, where cmd is any valid HV-CTL command in the above list, will return specic
help syntax for the command requested. If the user would like more detailed help for a specic command
then it is necessary to turn on verbose mode using the VRB Y command syntax. This will enable returning a
description of the parameters of any specic command. The user may return to non-verbose mode by issuing
the VRB N command.
Specic command help is listed below.
CON <"1"|"2"|"3"|"4"|"5"|"6"|"7"> |<"?"><cr>
Connect specied program input
"1"|"2"|"3"|"4"|"5"|"6"|"7" Input to connect
"?" ? for inquiring currently congured source.
HLP[ cmd]<cr>
Provides help information for the HV-CTL command set.
cmd optional command identier
LOCK <"1"|"2"|"3"|"4"|"5"|"6"|"7">|<"ALL"> |<"?"><cr>
Lock a specied switch input from recognition.
1-7 = Switch input to be ignored.
"ALL" = Lock all switch inputs.
"?" = Request current lock status.

18
Huddle-VU
PWR <"ON"|"OFF"><cr>
Controls the state of the HV-CTL switched AC receptacles and AUX relay output
RLY <"ON"|"OFF"><cr>
Controls the state of the HV-CTL switched AC receptacles and AUX relay output
RSP <"Y"|"N"><cr>
Turns on or off a response from HV-CTL.
"Y"|"N" "Y" enables a response, "N" disables.
SBR <<"S1"|"S2"> <"1"|"2"|"3"|"4"|"5"|"6">> | <"?">
Congure the serial bit rate of serial port 2.
"S2" = Serial Port 2.
"1"=2400, "2"=4800, "3"=9600, "4"=19200, "5"=38400, "6"=57600, "?" = inquiry.
STA<cr>
Status request returns the currently connected input and monitor status:
STA CON = <Number> PWR <"ON"|"OFF">
Number Input (1-7) that is currently connected
"ON"|"OFF" Current monitor status
UNLOCK <"1"|"2"|"3"|"4"|"5"|"6"|"7">|<"ALL">|<"?"><cr>
Unlock a specied switch input.
1-7 = Switch input to be unlock.
"ALL" = Unlock all switch inputs
"?" = Request current unlock status
VER<cr>
Version request returns the following:
VER <Part#> <Revision#><cr>
Part# "HV-CTL"
Revision# XX.xx, XX=Major revision number, xx=Minor revision number
VRB <"Y"|"N"><cr>
Turns on or off verbose error message reporting.
"Y"|"N" "Y" turns verbose on, "N" turns verbose off.

19 Huddle-VU
LOCK REQUEST
The LOCK request is used to prevent the specied switch input(s) from being recognized.
LOCK <input_to_lock> | <"ALL"> | <"?"> <cr>
Syntax:
LOCK <input_to_lock > | <"ALL"> <"?"><cr>
Where:
LOCK request header
input_to_lock = 1,2,3,4,5,6 or 7.
"ALL" = Lock all switch inputs
"?" to query the currently locked switch inputs.
Example:
To LOCK input 2 from being recognized:
LOCK 2<cr>
To LOCK all switch inputs from being recognized:
LOCK ALL<cr>
To query the currently locked switch inputs:
LOCK ?<cr>

20
Huddle-VU
POWER REQUEST
The PWR request allows the user to turn the AC receptacles and AUX Relay output on the HV-CTL on or
off.
PWR <"ON"|"OFF"><cr>
Syntax:
PWR <"ON"|"OFF"><cr>
Where:
PWR request header
"ON" = Turns AC receptacles and AUX relay output on.
"OFF" = Turns AC receptacles and AUX relay output off.
Example:
PWR ON<cr>