Wheatstone TV-80 User manual

TV-80Audio Console
TECHNICAL MANUAL
600 Industrial Drive, New Bern, North Carolina, USA 28562

WHEATSTONE CORPORATION
600 Industrial Drive
New Bern, North Carolina 28562
tel[phone]/fax[phone]
TV-80LiveTelevisionAudioConsoleTechnicalManual-1stEdition
©1998 Wheatstone Corporation
TV-80 / July 98

AA
AA
ATTENTIONTTENTION
TTENTIONTTENTION
TTENTION
RR
RR
READEAD
EADEAD
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EE
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!!
!
TV-80 / June 2003
Attention!
FF
FF
Federal Communications Commission (FCC)ederal Communications Commission (FCC)
ederal Communications Commission (FCC)ederal Communications Commission (FCC)
ederal Communications Commission (FCC)
Compliance Notice:Compliance Notice:
Compliance Notice:Compliance Notice:
Compliance Notice:
Radio FRadio F
Radio FRadio F
Radio Frequency Noticerequency Notice
requency Noticerequency Notice
requency Notice
NOTE:NOTE:
NOTE:NOTE:
NOTE: This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.
This equipment, generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.
!
This is Class A product. In a domestic environment,This is Class A product. In a domestic environment,
This is Class A product. In a domestic environment,This is Class A product. In a domestic environment,
This is Class A product. In a domestic environment,
this product may cause radio interference, in which case,this product may cause radio interference, in which case,
this product may cause radio interference, in which case,this product may cause radio interference, in which case,
this product may cause radio interference, in which case,
the user may be required to take appropriate measures.the user may be required to take appropriate measures.
the user may be required to take appropriate measures.the user may be required to take appropriate measures.
the user may be required to take appropriate measures.
This equipment must be installed and wired properly in order to assure
compliance with FCC regulations.
Caution!Caution!
Caution!Caution!
Caution! Any modifications not expressly approved in writing byAny modifications not expressly approved in writing by
Any modifications not expressly approved in writing byAny modifications not expressly approved in writing by
Any modifications not expressly approved in writing by
Wheatstone could void the user's authority to operate this equipment.Wheatstone could void the user's authority to operate this equipment.
Wheatstone could void the user's authority to operate this equipment.Wheatstone could void the user's authority to operate this equipment.
Wheatstone could void the user's authority to operate this equipment.

I N S E R T P O I N T S H I PP ING SHEET
AT T E N T I O N !
Signal Path Insert Points
This TV-80 audio console is equipped with insert patch
points on the following modules:
Submasters
AUX master signals
SUBMASTER signals
Stereo Masters
STEREO MASTER output signals
These patch points can be bypassed by internal PCB-
mounted jumpers. As shipped from the factory, PCB-
mounted insert jumpers have already been installed. If
you intend to use outboard signal loops at these
points, you must remove the factory installed jumpers.
See “Submaster Module Insert Bypass” (Chapter 3)
and “Master Insert Bypass” (Chapter 4) in the TV-80
Technical Manual for details.
NOTE: While input modules also have insert points, these may simply be front panel
bypassed by an “insert” switch at the top of each module.

D U A L F A I L S A F E P O W E R S U P P L I E S
WHEATSTONE AUDIO CONSOLESMay 1998
ATTENTION!
If your Wheatstone audio console has been ordered
and shipped with a failsafe power supply system, it
uses TWO separate rackmount power supplies. Though
either is capable of running the console on its own, in
failsafe operation both units run in tandem: if one fails,
the other takes over, assuring uninterrupted console
operation.
Dual failsafe supplies have their output trimmed to
entirely different settings than stand-alone single units,
and are MEANT to be run in tandem. If they are not, and
you attempt to “save” one supply by powering it down and
holding it in reserve until you run into an actual failure
condition, you could shorten the life expectancy of the
working unit.
!
In order for the failsafe system to perform as
designed, always have BOTH rackmount
supplies powered up and connected to the
console.
DualRedundantPowerSupplies

EVENT C OMPUTER and C ONSOLE P OWER SUPPLIES
WHEATSTONE TV-80 CONSOLESNov 1998
ATTENTION!
Wiring Power Supplies into AC Line
To insure proper power sequencing in systems
using an Event Computer, we recommend that the
PSC-125 Event Computer Power Supply be connected
to the same AC power circuit as the TV-80 PSC-1000
ConsolePowerSupply.
Further, if you have failsafe power supply pairs and have
connected each PSC-1000 to its own separate AC power
circuit, as recommended elsewhere in this manual, we
recommend that you connect one PSC-125 to each of
those circuits.
Foradditionalinformation,seethespecialTECHNOTE
at the top of page 9-6 in your TV-80 Technical Manual
“Power Systems” chapter.

E X T R A C T O R T O O L S
Your Wheatstone TV-80 audio console is equipped with two
"module extractor tools" which are mounted underneath the
console armrest, to the far right (just in front of the operator’s
mainframe headphone jack).
Main module faceplates are held into the console mainframe by three
fasteners: a lower rear panel screw (below the module’s I/O connectors,
located at the rear of the console beneath the meterbridge assembly) and
two faceplate mounting screws (top and bottom) located on the control
surface of the console. The faceplate mounting screws, when removed,
leave specially threaded holes that accept the two extractor tools.
To remove a module faceplate from the mainframe:
Remove the rear panel screw, then the front top and bottom mounting
screws. Remove the extractor tools from underneath the armrest, and
screw each tool into a module faceplate mounting hole. Use only four or
five turns (do not over-insert; you may damage the threaded mainframe
hole underneath). Using the extractor tools as handles, pull the module
straight up out of the mainframe.
ModuleRemovalTools

MAIN CONSOLE POWER PWR IN 1A
PWR IN 1B
PWR IN 2A
PWR IN 2B
2 RU
SPS-40's connect to the
Power Interface Module
PWR-1000
RCC / SMART
SELECT BUTTON
POWER
PWR IN 1
PWR IN 2 SPS-180's connect to the optional
RCC-80 (w/32VC5-5 card) or
the Smart Select Button power
connectors
SMART SELECT
CAGE POWER CAGE #1
CAGE #2
5 RU
5 RU
*SPLITTERS
#1
#2
*NOTE: If installing redundant
cage power to a single cage,
the two splitters are not
required.
DEVICE RACKUNITS TOTAL POWER REQUIREMENTS
SPS-40 #1
SPS-40 #2 600W TOTAL
SPS-180 #1
SPS-180 #2 200W TOTAL
SPS-180 #3
SPS-180 #4 200W TOTAL
SPLITTER #1
SPLITTER #2 1 (1 3/4")
1 (1 3/4") N / A
CAGE #1
CAGE #2 5 (8 3/4")
5 (8 3/4") N / A
NOTES: •Power totals assume redundant power supplies are installed.
•Complete system should be run from two 120 VAC/20 AMP circuits.
POWER SUPPLY AND SMART SELECT
INSTALLATION GUIDE
TV-80 / Dec 04
SYSTEM TOTAL = 1000W
2 (3 1/2")
SPS-40 #1
SPS-40 #2
2 (3 1/2")
PSR
2 RU
SPS-180 #1
SPS-180 #2
PSR
SPS-180 #3
SPS-180 #4

CONTENTS
Contents – 1
TV80 / Sep 98
Table of Contents
Chapter 1 — Installation
Console Placement .................................................................... 1-2
Factory Leg Support System .................................................... 1-2
System Ground .......................................................................... 1-2
Power Supplies .......................................................................... 1-4
Failsafe Dual Redundant Supply............................................................................ 1-5
Energizing the Supplies.......................................................................................... 1-5
Audio and Control Wiring.......................................................... 1-6
The Insulation Displacement Connector System ................................................... 1-6
ConnectionProcedures .......................................................................................... 1-7
Insert Points............................................................................................................ 1-7
UnbalancedConnections ....................................................................................... 1-8
Quick Reference Module Pinouts........................................................................... 1-8
Chapter 2 — Mono Mic/Line Inputs
General........................................................................................ 2-4
Main Module ............................................................................... 2-5
Input section ........................................................................................................... 2-5
AUX section ............................................................................................................ 2-5
PAN Control ............................................................................................................ 2-5
Bus Assign .............................................................................................................. 2-5
Equalization section................................................................................................ 2-5
Peak LED................................................................................................................ 2-5
Cue and Solo .......................................................................................................... 2-6
Direct Out................................................................................................................ 2-6
Preselector Panel ....................................................................... 2-6
Input Fader Panel ....................................................................... 2-6
Fader....................................................................................................................... 2-6
Mute Groups ........................................................................................................... 2-6
Mix Minus................................................................................................................ 2-7
Ready LED.............................................................................................................. 2-7
Channel ON ............................................................................................................ 2-8
Metering ...................................................................................... 2-7
Input Module External Control Ports........................................ 2-8
Remote On and Off................................................................................................. 2-8
Cough ..................................................................................................................... 2-8
Talkback to Control Room ...................................................................................... 2-8
On Tally................................................................................................................... 2-9
TV80 / Sep 03

CONTENTS
Contents – 2
TV80 / Sep 98
Machine Start and Stop .......................................................................................... 2-9
EFS On/Off ............................................................................................................. 2-9
Machine Remote ON and OFF............................................................................... 2-9
Ready LED.............................................................................................................. 2-9
Input Module Logic Programming.......................................... 2-10
Mute/Tally ............................................................................................................. 2-10
Timer Restart ........................................................................................................ 2-10
Mix Minus.............................................................................................................. 2-10
LED VU ladder...................................................................................................... 2-11
AUX sends ............................................................................................................ 2-11
Mute Follow Connector ........................................................... 2-11
Input Module Audio Wiring ..................................................... 2-11
I/O Pinout Drawing................................................................................................ 2-12
Printed Circuit Board Load Sheets
(TECHNICAL DRAWINGS booklet)
MI-80 main PCB ................................................................................................ TD-15
MI-80 switchcard PCB (“SISW-80”)................................................................... TD-18
FPI-80 fader panel main PCB............................................................................ TD-41
Schematics
(TECHNICAL DRAWINGS booklet)
MI-80 main PCB .................................................................................................. TD-9
MI-80 switchcard PCB (“SISW-80”)................................................................... TD-16
FPI-80 fader panel main PCB............................................................................ TD-38
Stereo Line Inputs
General...................................................................................... 2-13
Main Module ............................................................................. 2-14
Input section ......................................................................................................... 2-14
AUX section .......................................................................................................... 2-14
BAL Control - Mode Switch .................................................................................. 2-14
Bus Assign ............................................................................................................ 2-14
Equalizationsection.............................................................................................. 2-15
Peak LED.............................................................................................................. 2-15
Cue and Solo ........................................................................................................ 2-15
Direct Out.............................................................................................................. 2-15
Preselector Panel ..................................................................... 2-15
Input Fader Panel ..................................................................... 2-16
Fader..................................................................................................................... 2-16
Mute Groups ......................................................................................................... 2-16
Mix Minus.............................................................................................................. 2-16
Ready LED............................................................................................................ 2-16
Channel ON .......................................................................................................... 2-16

CONTENTS
Contents – 3
TV80 / Sep 98
Metering .................................................................................... 2-17
Input Module Control Port....................................................... 2-18
Machine Start and Stop ........................................................................................ 2-18
Remote On and Off............................................................................................... 2-18
Ready LED............................................................................................................ 2-18
Input Module Logic Programming.......................................... 2-19
Mute/Tally ............................................................................................................. 2-19
Timer Restart ........................................................................................................ 2-19
Mix Minus.............................................................................................................. 2-19
Sum LED VU ladder ............................................................................................. 2-20
AUX sends ............................................................................................................ 2-20
Mute Follow Connector ........................................................... 2-20
Input Module Audio Wiring ..................................................... 2-21
I/O Pinout Drawing................................................................................................ 2-22
Printed Circuit Board Load Sheets
(TECHNICAL DRAWINGS booklet)
SI-84 main PCB ................................................................................................. TD-27
SI-88 main PCB ................................................................................................. TD-36
SISW-80 switchcard PCB.................................................................................. TD-18
FPI-80 fader panel main PCB............................................................................ TD-41
Schematics
(TECHNICAL DRAWINGS booklet)
SI-84 main PCB ................................................................................................. TD-20
SI-88 main PCB ................................................................................................. TD-29
SISW-80 switchcard PCB.................................................................................. TD-16
FPI-80 fader panel main PCB............................................................................ TD-38
Chapter 3 — Submaster Module
General........................................................................................ 3-2
Main Module Controls................................................................ 3-2
Aux Master Section................................................................................................. 3-2
Mix Minus Master Section ...................................................................................... 3-2
Mix Minus Confidence Feed ................................................................................... 3-2
LED VU Ladders..................................................................................................... 3-3
Vu Trims.................................................................................................................. 3-3
Pan Pots ................................................................................................................. 3-3
Master Assign ......................................................................................................... 3-3
Talkback.................................................................................................................. 3-3
Sub Peak LED ........................................................................................................ 3-3
Solo and Cue .......................................................................................................... 3-3
Submaster Insert Point ........................................................................................... 3-3
Fader Panel Controls ................................................................. 3-4
Faders..................................................................................................................... 3-4
Channel ON ............................................................................................................ 3-4

CONTENTS
Contents – 4
TV80 / Sep 98
Metering ...................................................................................... 3-4
Submasters............................................................................................................. 3-4
Submaster Module Internal Programming............................... 3-4
AUX Solo ................................................................................................................ 3-4
AUX Insert Bypass.................................................................................................. 3-4
Submaster Insert Bypass ....................................................................................... 3-5
Submaster Module Audio Wiring.............................................. 3-5
I/O Pinout Drawing.................................................................................................. 3-6
Printed Circuit Board Load Sheets
(TECHNICAL DRAWINGS booklet)
SG-80 main PCB ............................................................................................... TD-53
SGSW-80 switchcard PCB ................................................................................ TD-57
FPO-80 fader panel main PCB.......................................................................... TD-64
Schematics
(TECHNICAL DRAWINGS booklet)
SG-80 main PCB ............................................................................................... TD-47
SGSW-80 switchcard PCB ................................................................................ TD-54
FPO-80 fader panel main PCB.......................................................................... TD-61
Chapter 4 — Stereo Masters
General........................................................................................ 4-2
Main Module Controls................................................................ 4-2
Mono Master Solo Switch....................................................................................... 4-2
Mono Master LEO VU Ladder ................................................................................ 4-2
Line Out Solo Switch .............................................................................................. 4-2
Vu Trims.................................................................................................................. 4-2
Mono Pot................................................................................................................. 4-3
Master Assign ......................................................................................................... 4-3
Outputs ................................................................................................................... 4-3
Stereo Master (“Tone”) Interrupt ............................................................................ 4-3
Peak LED................................................................................................................ 4-3
Solo and Cue .......................................................................................................... 4-3
Insert Point.............................................................................................................. 4-3
Fader Panel Controls ................................................................. 4-4
Fader....................................................................................................................... 4-4
Channel ON ............................................................................................................ 4-4
Sum VU................................................................................................................... 4-4
Metering ...................................................................................... 4-4
Stereo Masters ....................................................................................................... 4-4
Master Module Internal Programming...................................... 4-5
Master Insert Bypass .............................................................................................. 4-5
Sum LED VU........................................................................................................... 4-5
Master Module Input/Output Wiring ......................................... 4-5
I/O Pinout Drawing (Master #1) .............................................................................. 4-6
I/O Pinout Drawing (Master #2) .............................................................................. 4-7
TV80 / June 99

CONTENTS
Contents – 5
TV80 / Sep 98
Printed Circuit Board Load Sheets
(TECHNICAL DRAWINGS booklet)
SG-80 main PCB ............................................................................................... TD-53
SGSW-80 switchcard PCB ................................................................................ TD-57
FPO-80 fader panel main PCB.......................................................................... TD-64
Schematics
(TECHNICAL DRAWINGS booklet)
SG-80 main PCB ............................................................................................... TD-47
SGSW-80 switchcard PCB ................................................................................ TD-54
FPO-80 fader panel main PCB.......................................................................... TD-61
Chapter 5 — Control Room Monitor Module
General........................................................................................ 5-2
Controls ...................................................................................... 5-2
VU Trims ................................................................................................................. 5-2
Solo and Cue Master Level Controls...................................................................... 5-2
Monitor Select......................................................................................................... 5-2
Headphone Section ................................................................................................ 5-3
CR Section.............................................................................................................. 5-3
Mode Switch ........................................................................................................... 5-3
Tally Ports ............................................................................................................... 5-3
Metering ...................................................................................... 5-3
Solo/External .......................................................................................................... 5-3
Solo/Cue Logic Programming................................................... 5-4
HDPN/CR Interrupt Select...................................................................................... 5-4
CR/HDPN Dim Option ............................................................................................ 5-4
CR/HDPN Mute ..................................................................................................... 5-4
Cue Speaker Output mode..................................................................................... 5-5
Headphone Output Options ...................................................... 5-5
HDPN Amp Output Mode ....................................................................................... 5-5
HDPN Line Output Pre/Post Select........................................................................ 5-5
“On-Air” Tally Port ..................................................................... 5-5
Control Room Module Audio Wiring ........................................ 5-6
I/O Pinout Drawing.................................................................................................. 5-7
Printed Circuit Board Load Sheets
(TECHNICAL DRAWINGS Booklet)
CR-80 main PCB ............................................................................................... TD-74
CRSW-80 switchcard PCB ................................................................................ TD-77
Schematics
(TECHNICAL DRAWINGS Booklet)
CR-80 main PCB ............................................................................................... TD-70
CRSW-80 switchcard PCB ................................................................................ TD-75

CONTENTS
Contents – 6
TV80 / Sep 98
Chapter 6 — Studio Monitor Module
General........................................................................................ 6-2
Controls ...................................................................................... 6-2
Studio VU Trims...................................................................................................... 6-2
Talkback Dim Trims ................................................................................................ 6-2
Monitor Select......................................................................................................... 6-3
Headphone Section ................................................................................................ 6-3
Studio Section......................................................................................................... 6-3
Mode Switch ........................................................................................................... 6-3
Tally Ports ............................................................................................................... 6-3
Studio Module Logic Programming ......................................... 6-4
HDPN Talkback Interrupt........................................................................................ 6-4
STUDIO/HDPN Dim ............................................................................................... 6-4
STUDIO/HDPN Mute ............................................................................................. 6-4
HDPN Amp Output Mode ....................................................................................... 6-4
HDPN Line Output Pre/Post Select........................................................................ 6-4
Studio “On-Air” Tally Port......................................................... 6-5
Studio Module Audio Wiring ..................................................... 6-5
I/O Pinout Drawing.................................................................................................. 6-6
Printed Circuit Board Load Sheets
(TECHNICAL DRAWINGS Booklet)
CR-80 main PCB ............................................................................................... TD-74
CRSW-80 switchcard PCB ................................................................................ TD-78
Schematics
(TECHNICAL DRAWINGS Booklet)
CR-80 main PCB ............................................................................................... TD-70
CRSW-80 switchcard PCB ................................................................................ TD-75
Chapter 7 — VU/Oscillator Module
General........................................................................................ 7-2
Module Controls......................................................................... 7-2
External Oscillator Enable ...................................................................................... 7-2
VU Trims ................................................................................................................. 7-2
Talkback.................................................................................................................. 7-2
External Meter Select ............................................................................................. 7-3
Oscillator Section.................................................................................................... 7-3
Timer Control .......................................................................................................... 7-3
VO Module Input/Output Wiring................................................ 7-4
I/O Pinout Drawing.................................................................................................. 7-5
Printed Circuit Board Load Sheets
(TECHNICAL DRAWINGS Booklet)
MO-1000 main PCB........................................................................................... TD-84
MOSW-1000 switchcard PCB ........................................................................... TD-86
TM-6SB Timer PCB ......................................................................................... TD-149

CONTENTS
Contents – 7
TV80 / Sep 98
Schematics
(TECHNICAL DRAWINGS Booklet)
MO-1000 main PCB........................................................................................... TD-80
MOSW-1000 switchcard PCB ........................................................................... TD-85
TM-6 Timer ...................................................................................................... TD-148
Chapter 8 — Options
Smart Select®Cage.................................................................... 8-2
Smart Select Audio Wiring...................................................................................... 8-2
Audio Connector Pinouts (stereo line).................................................................... 8-4
Audio Connector Pinouts (mono mic/line).............................................................. 8-5
Printed Circuit Board Load Sheets (TECHNICAL DRAWINGS booklet)
Stereo line switcher card (SS-SI-8) .......................................................... TD-140
Mono mic/line switcher card (SS-MI-8)..................................................... TD-137
Smart Cage motherboard (SS-MB-1) ....................................................... TD-143
Schematics (TECHNICAL DRAWINGS booklet)
Stereo line switcher card (SS-SI-8) .......................................................... TD-138
Mono mic/line switcher card (SS-MI-8)..................................................... TD-135
Smart Cage motherboard (SS-MB-1) ....................................................... TD-141
Confidence Module .................................................................... 8-6
Mix-Minus Interrupt ................................................................................................. 8-6
Stereo Master Interrupt........................................................................................... 8-6
External Control ...................................................................................................... 8-7
Internal Programming Options................................................................................ 8-7
Confidence Module Wiring Diagram....................................................................... 8-8
Confidence Module Wiring Pinout Drawing............................................................ 8-9
Load Sheet Drawing (TECHNICAL DRAWINGS booklet) ................................ TD-67
Schematic (TECHNICAL DRAWINGS booklet) ................................................ TD-65
Mute Master Panel.................................................................... 8-10
Mute Masters A thru D.......................................................................................... 8-10
Load Sheet Drawing (TECHNICAL DRAWINGS booklet) ................................ TD-90
Schematic (TECHNICAL DRAWINGS booklet) ................................................ TD-89
Tape Remote Panel .................................................................. 8-11
Wiring Pinouts....................................................................................................... 8-11
Timer ......................................................................................... 8-12
Load Sheet Drawing (TECHNICAL DRAWINGS booklet) .............................. TD-149
Schematic (TECHNICAL DRAWINGS booklet) .............................................. TD-148
Chapter 9 — TV-80 Power Systems
General........................................................................................ 9-2
SPS-40 Console Power Supply................................................. 9-2
Power Interface Module............................................................. 9-4
PWI-80 PCB Load Sheet (TECHNICAL DRAWINGS booklet) ......................... TD-88
PWI-80 PCB Schematic (TECHNICAL DRAWINGS booklet)........................... TD-87
TV80 / Dec 04

CONTENTS
Contents – 8
TV80 / Sep 98
SPS-180 Power Supply .............................................................. 9-5
Event Computer and Preselector Panels ............................................................... 9-5
Smart Select Cage.................................................................................................. 9-6
Appendix I
TV-80 Console Internal Wiring Paths .....................................................................A-2
Balanced versus Unbalanced Input/Output Connections ......................................A-3
Level Measurement ................................................................................................A-4
Extender Ribbons ...................................................................................................A-5
Troubleshooting ......................................................................................................A-5
Integrated Circuits...................................................................................................A-6
Other Details...........................................................................................................A-7
Appendix II
Factory Leg Set Assembly......................................................................................A-8
Appendix III
Torpey Clock Display OEM Documentation .........................................................A-11
TV80 / Dec 04

MAINFRAME INSTALLATION
page 1 – 1
TV80 / Aug 98
Installation
Chapter Contents
Console Placement .................................................................... 1-2
Factory Leg Support System .................................................... 1-2
System Ground .......................................................................... 1-2
Power Supplies .......................................................................... 1-4
Failsafe Dual Redundant Supply........................................................................ 1-5
Energizing the Supplies...................................................................................... 1-5
Audio and Control Wiring.......................................................... 1-6
The Insulation Displacement Connector System ............................................... 1-6
ConnectionProcedures ...................................................................................... 1-7
Insert Points........................................................................................................ 1-7
UnbalancedConnections ................................................................................... 1-8
Quick Reference Module Pinouts....................................................................... 1-8
TV80 / Aug 99
TV80 / Sep 03

MAINFRAME INSTALLATION
page 1 – 2
TV80 / Aug 98
Installation
ConsolePlacement
TV-80consolesareHEAVY.Afullyloaded70positionmainframe
can easily weigh 600 lbs. We recommend using at least six people to
move and place the console.
Consoleplacementshouldavoidproximitytoanyelectromagnetic
fields, such as large power transformers, motors, and fluorescent
lighting fixtures. The console may be mounted either on a custom
constructedtablesurface ortheoptionalfactorylegsupportsystem.In
either case, the console's handrest top surface would generally be
located 29-30 inches from the floor.
Do not connect the TV-80 console to its power supply (and do
not connect the power supply to the AC power line) until instructed
to do so.
Factory Leg Support System
The optional factory leg system supports the console at sitdown
height,and providesahidden internalwiring chasethat maybe closed
off with a rear concealment panel. The leg support system is pre-
assembled at the factory, then broken down for shipment. Field
assembly instructions are included in a separate document supplied
withthelegs.TheyarealsoreproducedinAppendixIIofthisTechnical
Manual (see page A-8).
SystemGround
The first step is to ground the console.
Note that as supplied from the factory, console rackmount power
supply common, audio common, and the TV-80 mainframe are con-
nected together at the console, but are NOT connected to electrical
ground and the chassis of the power supply. Safety requirements
dictate that a positive connection from the console mainframe to
electricalgroundbemadeinthecompletedinstallation.Useoneofthe
grounding lugs on the bottom of the mainframe to establish your
system ground. The grounding lug terminal strip may be found at the
rearoftheconsole,alongthebottomedgeofthemainframepandirectly
under the rightmost mainframe slots (to the extreme lower left if you
are looking at the rear of the console).
!

MAINFRAME INSTALLATION
page 1 – 3
TV80 / Aug 98
CONSOLE
2-TRACK
MULTI-TRACK
AC BREAKER
BOX
DEVICE 1
DEVICE 2
DEVICE N
CONSOLE POWER SUPPLY
CONTROL ROOM POWER AMP
STUDIO POWER AMP
OTHER
POWER COMPANY
EARTH GROUND
HEAVY
(#4 or #6)
COPPER
WIRE
HIGH POWER
EQUIPMENT RACK
COPPER ROD
SOIL
3-wire ground or separate wire run from chassis
EFFECTS RACK
MIC PANEL
GND
TYPICAL SYSTEM
GROUNDING SCHEME
etc.
3–5 ft.
Tie the console ground lug
terminal strip to the system
earthground. Tieeverypiece
of equipment in the entire
audio system to the console
ground lug terminal strip.
The system ground serves two important purposes:
(1) It provides a zero signal reference point for the entire audio system;
(2) It assures safety from electrical shock.
Thereexisttwotermsthatoneencountersinadiscussionofground:
(A)EARTHGROUND,whichisusuallyaheavycopperroddrivenintothe
soiladjacenttothebuilding(around6feetdown)oraconnectiontothecopper
water pipes leading into the building. Either is acceptable (unless, of course,
the water pipe is made of plastic).
(B) THE POWER COMPANY EARTH CONDUCTOR that enters the
building at the power line breaker box; this conductor should be (and is often
by code) tied to the above-mentioned earth ground at one point. This point is
the SYSTEM EARTH GROUND.
TIE THE CONSOLE GROUND LUG TERMINAL STRIP TO
THESYSTEMEARTHGROUND. TIEEVERYPIECEOFEQUIP-
MENT IN THE ENTIRE AUDIO SYSTEM TO THE CONSOLE
GROUNDLUGTERMINALSTRIP. Ifthesystemearthgroundpoint
is inaccessible, tie the console ground terminal strip to the power
company earth conductor at the main breaker box (see drawing
"Typical Grounding Scheme" above).

MAINFRAME INSTALLATION
page 1 – 4
TV80 / Aug 98
An “isolated AC ground”
studio outlet (usually or-
ange in color) can also
be used to accomplish
the required grounding.
Each piece of equipment should be connected by its own ground
wire (usually the round third pin on the AC cord). This means that
every AC outlet must have a separate conductor run to the console
ground lug terminal strip; the outlets cannot be daisy-chained as is
normallyencounteredincommercialandresidentialACsystems. Any
equipment not supplied with 3-wire AC cables must have individual
ground wires (16 gauge or larger) connected to their chassis grounds
and then run to the console ground lug terminal strip.
Further Grounding Details
Checkallequipmenttobeabsolutelycertainthateachunitispower
transformer isolated from the AC mains to prevent safety hazards.
Itisassumedthatineachpieceofaudioequipmenttheaudioground
andthechassisaretiedtogetheratsomepoint. Anypieceofequipment
lacking a grounded chassis is likely to be prone to interference
problems.
Locateallunbalancedaudioequipmentinthesamerackifpossible,
to minimize chassis ground potential differences. It may also be
helpful to insulate each piece of unbalanced equipment from its
mounting rails in the rack by means of nylon 10-32 screws and
insulating washers between rails and faceplates.
Oncethesystemisproperlygrounded,proceedwiththeconsole
power supply installation and connection (next section).
Power Supplies
For a complete discussion of TV-80 power supplies, see the
“TV-80 Power Systems” chapter of this manual (page 9-1). For the
purposes of the current chapter, you should properly rackmount the
PSR with SPS-40 units (console) and PSR with SPS-180 units
(preselector panels, event computer and rackmount smart select cage)
power supplies and connect them to their associated equipment as
described in the “Power Systems” chapter. (If failsafe versions have
been ordered, you will be installing two units of each type.)
Note the power supplies should be mounted in an equipment rack within
fifteen feet of the console (but no closer than 3 feet). Avoid locating any high
gain equipment (such as phono preamps, tape recorders, etc.) too near the
rackmount supplies, to avoid magnetic interference into that equipment.
Once the supplies are rackmounted, they should be connected to
their respective equipment using the supplied cables. Note that each
cable’s10-pinfemaleconnectorhastoberotateduntilitslocatingpins
match the male connectors on the equipment it powers. Do not force a
connector on; it attaches easily when properly aligned. Connect the
cablesfirsttotherearofthetheirassociatedequipment,thentotherear
of each rackmount power supply.
TV80 / Dec 04