|
 Delta Series
Cartridge Machines (ITC)
Introduction
ITC's Delta series cartridge machines were designed to fit in 1/3 of the
width of a rack to conserve valuable space. This compact size also allows
versatility without compromising operator convenience. Front panel
switches are simple and convenient for error-free operation. Any Delta
reproducer is converted easily to a recorder at any time by adding a Delta IV
recording amplifier and a record head.
Delta series cartridge machines are available in a number of cost-effective
and space-efficient configurations with the flexibility of mono or stereo
reproduction and recording. The Delta series is flexible and versatile and can
be made to suit specific requirements and application needs.
Delta I Single Deck Reproducer
 | High-speed cue increases speed of operation 7-1/2 PS operation standard |
| Field convertible to 3.75 IPS or 15 IPS operation |
| Designed for simplicity in operator use |
| Add recording capability by combining with the Delta IV recording
amplifier |
| The industry standard in front-panel layout |
Delta IV Recording Amplifier
| Converts Delta I reproducers and bottom deck of Delta III machines to
recorders |
| All three NAB cue tones standard |
| 1/3 rack width |
| Designed for simplicity in operator use |
Delta IV is a stand-alone single-deck reproducer for size A and AA
cartridges. High-speed re-cue and all NAB cue tones are standard. A Delta IV
recording amplifier may be added to provide complete recording
capabilities.
Delta I Reproducer Features
| Efficient toroidal power transformer |
| Stable micro-adjust headblock assembly with adjustable long life stainless
steel tape guides |
| Long-life switches with easily replaceable lamps |
| Crystal referenced brushless DC servo motor for low flutter and precise
speed control |
| Repeat/play lock-out prevents cart from being played twice in a row. This
feature can be disabled. |
| Flashing "cart played" indicator |
| High-speed re-cue, 22.5 IPS for convenience |
| Scuff- and scratch-resistant polycarbonate front panel |
| Transformerless output configuration with XLR connectors standard for
performance |
| Plug-in PC cards with socketed ICs and gold flash edge connectors |
| Automatic auxiliary start pulse for clock reset, standard on all Delta
reproducers |
| Audio mutes on detection of end-of-message cue tone |
| High-slew rate and low-noise 5500 series audio amplifiers (5532, 5534 AN)
for clean audio |
| Modular motherboard and daughter board construction with plug-in PC cards
1/2-inch thick anodized tool plate aluminum desk resists wear and is warp
resistant |
| Compact size, 1/3-rack width conserves space in today's tighter
installations |
Powerful Air Damped Solenoid
Powerful air-damped solenoid with adjustable linkage allows repeatable and
accurate long-term pressure roller adjustments. Solenoid control is accomplished
by a dedicated power supply. Neither heat nor line voltage fluctuations will
change pressure roller pressure, virtually eliminating skew-induced audio phase
error.
Precision Micro-Adjustable Head Block
This precision micro-adjustable head block module is designed to provide
accurate and repeatable height, zenith, and critical azimuth alignment. Cross-linked azimuth arms inside the block allow fine precision adjustments.
Independent set screws have lock units to assure long term stability. Heads are
specially designed for very flat frequency response and long life.
Interchangeable Printed Circuit Boards
Reproduce amplifiers and cue detectors are all on a single board. The
reproduce amplifier cue detector board may be exchanged between single or triple
decks. The reproduce logic also is interchangeable between single and triple
decks.
Microprocessor Circuits
Microprocessor circuits make Delta machines more reliable, serviceable,
compact and efficient. Microprocessors allow inclusion of many features not
practical in discrete component designs. Troubleshooting is easy because
searching for an individual component is eliminated.
Microprocessor Logic
Microprocessor logic in Delta machines monitors all front-panel switches,
controls motor speed, operates all lamps and makes all operating decisions for
the machine. Microprocessors eliminate virtually all troublesome relays and
discrete components of other designs.
Cue Detection
Cue detection in Delta machines is done by digital microprocessor logic. Digital cue tone detection eliminates adjustment of components subject to drift
or change, making operation more dependable and repeatable.
Delta IV Recording
Amplifier Features
With the addition of a Delta IV recording amplifier, a Delta I reproducer or
the bottom deck of a Delta III reproducer can be converted to a recorder.
| Group
delay compensated, low-distortion recording amplifier |
| Precision, crystal
referenced bias and cue tones for no drift and low distortion |
| Front-panel meters
with simulated "VU" ballistics and A scale. Meters automatically
switch between record (input) and reproduce (output) |
| Record set switch Secondary
and tertiary cue tone record switches |
| Front panel controls for 1 kHz cue tone
add and defeat |
| Independent front-panel input level controls. Knobs may be
removed and holes capped to prevent level tampering |
| Convenient meter selection
switches allow front-panel selection of record, play cue or bias indications |
|
Record amplifier interconnect cables mate with rear panel connectors on Delta I
or Delta III reproducers to provide power, logic and head lead interconnection. |
Delta Series Rear Panel
| Audio inputs are via rear panel XLR connectors. Units
are shipped configured for 20K Ohm bridging, but may be field converted to 600
Ohm or 150 Ohm balanced, terminated. Input transformers are standard, while
jumpers allow the use of true differential, transformerless input amplifiers |
|
Easily removable top cover |
| Full remote control
available through rear panel connector |
| Delta IV recording amplifier
interconnection socket |
| International IEC type AC connector with removable cord
and integral RFI filtering |
| XLR audio connectors. Audio outputs are factory
transformer coupled. May be field converted to balanced active transformerless
by jumper changes. Audio output impedance selectable to operate into 600 or 150
Ohms |
Delta Series Specifications
Power
| 105 - 132 VAC or 210 - 264 VAC
| 50-60 Hz |
|
Power Consumption
| Delta I Reproducer – 50 VA Typical; 65 VA Maximum
| Delta III Reproducer – 120 VA Typical; 135 VA Maximum
*Delta IV Recorder/Reproducer – 5 VA Typical; 10 VA
Maximum |
|
Tape Speed
| 7.5 IPS (19 cm/S) Standard
| 3.75 IPS (9.5 cm/S) Strappable Option
| 15 IPS (38 cm/S) Strappable Option |
| |
Speed Accuracy
| Better Than ± 0.2% Record/Play Flutter
| Play Maximum – 0.12% Din Weighted @ 7.5 IPS
| Record/Play Maximum – 0.15% Din Weighted @ 7.5 IPS |
| |
Audio Output Configuration
| Transformer Coupled Standard
| Balanced Transformerless Operation Available Via Field Conversion |
|
Audio Output Impedances
| 600 Ohm Standard Termination Impedance (275 Ohm Source Impedance)
| 150 Ohm Optional Termination Impedance Via Strap Change (50 Ohm Source Impedance)
| Transformerless Output - 150 Ohm Source Impedance |
| |
Audio Output Level
| + 18 dBm Before Clipping into 600 Ohm Load
| + 22 dBm Transformerless Clip Level
| Variable from 0 Level to +18 dBm (Referenced to 1 kHz at
160 nWb/m)
| Continuously Variable "Useable" Range of -18 dBm
to +18 dBm |
| | |
Distortion
| System – 1.5% or Less Thd. (Tape Dependent) |
Noise
| Signal-to-Noise - No Tape Running; Scotchcart Broadcast
Cartridge in Place Mono 62 dB (or Better); Stereo 60 dB (or Better)
| Signal-to-Noise - Measured with Bias/No Signal; Input
Shorted; Virgin Cartridge Mono 60 dB (or Better); Stereo 58
dB (or Better)
| Squelch Noise – -70 dB or Better
| Noise Measurements Are 20 Hz - 20 kHz Bandlimited,
Unweighted |
| | |
Crosstalk (System)*
| -50 dB Minimum Separation between Any Two Channels |
Frequency Response
| Record Playback – ± 2.0 dB, 50 Hz - 16 kHz |
Equalization
| 1975 NAB – Factory Standard
| 1964 NAB – Field Convertible Via Jumper
| CCIR – Field Convertible
| Adjustments – High Frequency Via Potentiometer |
| | |
Cue Signals (Conform to NAB Specification)
| NAB Primary Cue – 1 kHz
| NAB Secondary Cue – 150 Hz
| NAB Tertiary Cue – 8 kHz |
| |
External Cue
| Cue Record Logging Input-Source Impedance - 10 K Ohms or
Less Volts in 0.5 V ± .25 V rms
| Cue Reproduce Audio Output-Load Impedance - 47 K Ohms or
Greater Volts Out 0.5 V ± .25 V rms |
|
Audio Input Sensitivity
| Line Input – 0 dBm Nominal
| Input Range – -18 dbm to +18 dBm (Strappable for -6 dBm
or + 6 dBm Center Range) |
|
Audio Input Configuration
| Transformer Coupled – 20 K Ohm Bridging Standard;
Strappable for 150/600 Ohms Terminating Impedance
| Transformerless Balanced Available |
|
Metering
| Monitors Input Level to the Recorder; Automatically
Switches to Playback When Not Recording; Manually Switchable
for Record/Play/Bias/Cue
| Taut Band Movement with VU Type "A" Scale |
|
Bias
| 119.3 kHz, Crystal Referenced |
Cartridge Size
| Delta I and Delta III Reproducers - NAB A and AA |
Ambient Operating Temperature Range
| 10° to 50°C (50° to 122°F) |
Mounting
| Tabletop Standard
| Rack-Mount Optional with URM-0001 Rack Mount Kit (Three
Units May Mount Side by Side) |
|
Dimensions
Width
| Delta I Reproducer – 14.1 cm (5-9/16 inches)
| Delta III Reproducer – 14.1 cm (5-9/16 inches)
| Delta IV Recording Amplifier – 14.1 cm (5-9/16 inches) |
| |
Depth
| Delta I Reproducer – 30.5 cm (12.00 inches)
| Delta III Reproducer – 33 cm (13.00 inches)
| Delta IV Recording Amplifier – 30.5 cm (12.00 inches) |
| |
Height
| Delta I Reproducer – 13.3 cm (5-7/32 inches)
| Delta III Reproducer – 26.6 cm (10-15/32 inches)
| Delta IV Recording Amplifier – 13.3 cm (5-7/32 inches)
Add 1 cm (.375 inch) for Feet |
| |
Note: All Machines Require 8.75 cm (3-1/2 inches) Additional
Depth at Rear for Interconnection.
Weight (Typical)
| Delta I Reproducer – 10.0 Kg (22 lbs.)
| Delta III Reproducer – 16.8 Kg (37 lbs.)
| Delta IV Recording Amplifier – 5.9 Kg (13 lbs.) |
| |
Total Shipping Weight Less Than 22.7 Kg (50 lbs.) Maximum
* Specified Using a Scotchcart II Broadcast Cartridge at a
Reference Level of 1 kHz at 250 nWb/m.
Click here to go back to the cart machine page.
| 
