Optimod 2200 operating manual addendum

Operating Manual Addendum

OPTIMOD-FM®

2200

Digital Audio Processor

Technical Data, Parts Lists, Schematics, and Parts Locator

Drawings for all Manufacturing Variants through July 2003

P/N 96120.000.01

About This Addendum

This publication is an addendum to the Optimod-FM 2200 Operating Manual. It replaces
Section 6 of that manual.

Over the years, there have been a number of manufacturing variants of the 2200 circuit
boards. This publication contains parts lists, schematics, and parts locator diagrams for
each variant. It therefore serves as a complete reference to all manufacturing variants of
the 2200.

For the most part, the variations have not affected the 2200’s specifications except to im­prove minor aspects of its performance. We implemented the variations mainly to im­prove manufacturing efficiencies or to replace components that their manufacturers have
obsoleted. In some cases, this required creation of small daughterboards to plug in the
circuit board footprints originally occupied by the obsoleted parts.

Orban® and Optimod® are registered trademarks.

All trademarks are property of their respective companies.

This Addendum is part number 96120.000.01

© Copyright 2003 Orban. Published July 2003.

1525 Alvarado Street, San Leandro, CA 94577 USA

Phone: [phone]; Fax: [phone]; E-Mail: [email protected]; Site: www.orban.com

Section 6

Technical Data

Specifications .............................................................................6-2

Performance....................................................................................................... 6-2

Installation ........................................................................................................... 6-2

Circuit Description......................................................................6-5

Overview ............................................................................................................. 6-5

16.384 MHz Oscillator and System Clocking.................................................... 6-5

Control Circuits ................................................................................................... 6-7

User Control Interface and LED Display Circuits ............................................. 6-9

L/R Input Circuits............................................................................................... 6-10

L/R Output Circuits ........................................................................................... 6-13

Composite Output Circuits.............................................................................. 6-17

DSP Circuits ....................................................................................................... 6-18

Power Supply .................................................................................................... 6-20

Parts List .....................................................................................6-23

Obtaining Spare Parts...................................................................................... 6-23

About the Parts List........................................................................................... 6-23

Display Assembly .............................................................................................. 6-24

Main Board........................................................................................................ 6-27

Power Supply .................................................................................................... 6-36

Schematics, Assembly Drawings ............................................6-40

Vendor Codes ..........................................................................6-43

6-2

TECHNICAL DATA ORBAN Model 2200

Specifications

It is impossible to characterize the listening quality of even the simplest limiter or com­pressor based on the usual specifications because such specifications cannot adequately
describe the crucial dynamic processes that occur under program conditions. Therefore,
the only way to evaluate the sound of an audio processor meaningfully is by subjective
listening tests.

Certain specifications are presented here to assure the engineer that they are reasonable,
to help plan the installation, and to help make certain comparisons with other processing
equipment. Some specifications are for features that are only available on the 2200-D.

Performance

Specifications apply for measurements from analog left/right input to stereo composite out-

put and to FM analog left/right output.

Frequency Response (Bypass Mode): Follows standard 50µs or 75µs pre-emphasis curve

±0.15 dB, 2.0 Hz–15 kHz. Analog left/right output and Digital output can be user config-

ured for flat or pre-emphasized output.

Dynamic Range: Output noise floor will depend upon how much gain the processor is set

for (Limit Drive, AGC Drive, Two-Band Drive, and/or Multi-Band Drive), gating level,
equalization, noise reduction, etc. It is primarily governed by the dynamic range of the
A/D Converter, which has a specified overload-to–noise ratio of 110 dB. The dynamic
range of the digital signal processing is 144 dB.

Total System Distortion (de-emphasized, 100% modulation): <0.01% THD, 20 Hz–1 kHz,

rising to <0.05% at 15 kHz. <0.02% SMPTE IM Distortion.

Total System Separation: >60 dB, 20 Hz–15 kHz.

Polarity (Bypass Mode): Absolute polarity maintained. Positive-going signal on input will re-

sult in positive-going signal on output.

Installation

Analog Audio Input

Configuration: Left and right.

Impedance: Electronically balanced 600Ω or 10kΩ load impedance, jumper-selectable.

Dynamic Range: 90 dB.

Common Mode Rejection: 70 dB at 50-60 Hz. 45 dB at 60 Hz-15 kHz.

Sensitivity: –20 dBu to +20 dBu to produce 10 dB gain reduction at 1 kHz, software- and

jumper- adjustable.

Maximum Input Level: +27dBu.

Connector: XLR-type, female, EMI-suppressed. Pin 1 Chassis Ground, Pins 2 (+) and 3

electronically balanced, floating and symmetrical.

A/D Conversion: 20-bit.

Filtering: RFI-filtered, with high-pass filter at 0.15 Hz.

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-3

Analog Audio Output

Configuration: Left and right. Flat or pre-emphasized (at 50µs or 75µs), software-

selectable.

Source Impedance: 30Ω, ±5%, electronically balanced and floating.

Load Impedance: 600Ω or greater, balanced or unbalanced. Termination not required.

Output Level: Adjustable from –20 dBu to +20 dBu into 600Ω or greater load, software-

adjustable.

Output Noise Level: –90.0 dB (Bypass mode, de-emphasized, 20 Hz-15 kHz bandwidth,

referenced to 100% modulation).

Crosstalk: <–70 dB, 20 Hz-15 kHz.

Distortion: <0.05% THD (Bypass mode, de-emphasized, 20 Hz-15 kHz bandwidth).

Connector: XLR-type, male, EMI-suppressed. Pin 1 Chassis Ground, Pins 2 (+) and 3

electronically balanced, floating and symmetrical.

Filtering: RFI-filtered.

Digital Audio Input (2200-D Only)

Configuration: Two-channel per AES/EBU-standard. 20-bit resolution.

Sampling rate: 25-55 kHz, automatically-selected.

Connector: XLR-type, female, EMI-suppressed. Pin 1 Chassis Ground, Pins 2 and 3 trans-

former balanced and floating.

Input Reference Level: Adjustable from 0 dBFS to –20 dBFS, software-controlled.

Digital Audio Output (2200-D Only)

Configuration: Two-channel AES/EBU-standard. 18-bit resolution. Software-controllable

for flat, pre-emphasized to the selected processing pre-emphasis, J.17 pre-emphasized,
or pre-emphasized to the selected processing pre-emphasis plus J.17 pre-emphasis.

Sampling rate: 32 kHz, 44.1 kHz, or 48 kHz, software-selected.

Connector: XLR-type, male, EMI-suppressed. Pin 1 chassis ground, Pins 2 and 3 trans-

former-balanced and floating.

Status Bits: AES/EBU status bits are implemented to control pre-emphasis in the Orban

8218 digital Stereo Encoder.

Output Level Adjustment: Output at 100% modulation, adjustable from 0 to –22.8 dBFS,

software-controlled.

Composite Baseband Outputs

Configuration: Two outputs, each with an independent output level control, output ampli-

fier and connector.

Source Impedance: 0Ω voltage source or 75Ω (jumper-selectable), single ended, floating

over chassis ground.

Load Impedance: 37Ω or greater. Termination not required.

Level (0Ω source impedance, 75Ω or higher load impedance): Adjustable 0.4 Vp-p to 8.8

Vp-p with front panel multi-turn output level controls, one per output.

Pilot Level: Adjustable from 8% to 10%, software-controlled.
Pilot Stability: 19 kHz, ±0.5 Hz (10° to 40° C).

D/A Conversion: 18-bit.

6-4

TECHNICAL DATA ORBAN Model 2200

Signal-to-Noise Ratio: –85 dB (Bypass mode, demodulated, de-emphasized, 20 Hz-80

kHz bandwidth, referenced to 100% modulation, unweighted).

Distortion: <0.05% THD (Bypass mode, demodulated, de-emphasized, 20 Hz-15 kHz

bandwidth, referenced to 100% modulation, unweighted).

Stereo Separation: At 100% modulation = 3.5Vp-p, >60 dB, 30 Hz-15 kHz. >65 dB typical

at 1 kHz; at 100% modulation = 1.0Vp-p, >50 dB, 30 Hz-15 kHz.

Crosstalk (Linear): –80 dB, main channel to sub-channel or sub-channel to main channel)

referenced to 100% modulation).

Crosstalk (Non-Linear): –80 dB, main channel to sub-channel or sub-channel to main

channel) referenced to 100% modulation).

38 kHz Suppression: –70 dB; –75 dB typical (referenced to 100% modulation).

76 kHz and Sideband Suppression: –70 dB; –80 dB typical (referenced to 100% modula-

tion).

Connector: BNC, floating over chassis ground. EMI-suppressed.

Maximum Load Capacitance: 0.047µF (0Ω source impedance).

Maximum Recommended Cable Length (0Ω source impedance): 100ft/30m RG-58A/U.

Filtering: RFI-filtered.

Remote Control Interface

Configuration: Eight opto-isolated inputs, user-programmable to select any eight of: User

Presets, Factory Presets, Bypass, Tone, Exit Test (returns from Bypass or Tone), Ste­reo, Mono from Left, Mono from Right, Mono from Sum, Input Analog, Input Digital.

Control: Momentary or continuous low side contact closure. 10mA minimum sink current;

9VDC, 50mA rating.

Power Supply: Current-Limited 9VDC provided to facilitate use with contact closure.

Connector: DB-25, EMI-suppressed.

Filtering: RFI-Filtered.

Power

Voltage: 90-120VAC, 100-132VAC or 200-264VAC, 50-60 Hz; 40VA.

Connector: IEC; detachable 3-wire power cord supplied. AC is EMI-suppressed.

Ground: Circuit ground is independent of chassis ground; can be isolated or connected

with a rear panel switch.

Safety Standards: UL, CE, CSA

Environmental

Operating Temperature Range: 32°F to 122°F, 0°C to 50°C at nominal operating volt-

ages.

Humidity: 0-95% RH, non-condensing.

Dimensions (W x D x H ): 19” x 14.25” x 1.75”/48.3cm x 36.2cm x 4.5cm. 1 rack unit high.

Weight: 12 lbs/5.4kg.

Shipping Weight: 15 lbs/6.8kg.

Warranty

One Year, Parts and Labor: Subject to the limitations set forth in Orban’s Standard War-

ranty Agreement.

Specifications are subject to change without notice.

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-5

Circuit Description

This section provides a detailed description of circuits used in the 2200/2200-D. It starts
with an overview of the 2200/2200-D system, identifying circuit sections and describing
their purpose. Then each section is treated in detail by first giving an overview of the cir­cuits followed by a component-by-component description. Keywords are highlighted
throughout the circuit descriptions to help you quickly locate the information you need.

Overview

The block diagram on page 6-44 illustrates the following overview of 2200/2200-D cir­cuit sections.

• The 16.384 MHz Oscillator and System Clocking section provides the various

clocks needed by the control, I/O and DSP circuits to carry out their functions.

• The Control Circuits administrate control of the 2200/2200-D system.

• The User Control Interface and LED Display Circuits section includes the con-

nector, RF-filtering, and circuitry for the remote control inputs. It also includes
circuitry for the front panel pushbutton switches, LED control status indicators,
and LED Meters. The LED Meters measure various 2200/2200-D signal levels
and display the results on six front panel 10-segment LED meters.

• The L/R Input Circuits include the connectors and RF-filtering for the left and

right audio inputs and the digital audio input, and the circuitry to interface these
inputs to the digital processing.

• The L/R Output Circuits include the connectors and RF-filtering for the left and

right audio outputs and the digital audio output, and the circuitry to interface the
digital processing to these outputs.

• The Composite Output Circuits include the connectors and RF-filtering for the

two composite outputs, and the circuitry to interface the digitally processed, ste­reo encoded signal to these outputs.

• The DSP Circuits implement the bypass, test tone, audio processing, and stereo

encoding functions using digital signal processing.

• The Power Supply provides power for all 2200/2200-D circuits.

16.384 MHz Oscillator and System Clocking

The 2200/2200-D uses a synchronous clocking scheme to eliminate any asynchronous
clocks operating in the sensitive regions of the L/R input A/D converter. A single

16.384 MHz crystal oscillator provides the timing reference for all system digital

6-6

TECHNICAL DATA ORBAN Model 2200

clock signals. The only clocks that run asynchronous to this clock are the AES/EBU
digital audio input related clocks and the 11.2896 MHz free running crystal clock os­cillator providing the 44.1 kHz AES/EBU output sample rate (this does not fall within
a sensitive region of the A/D). Synchronous counters divide the 16.384 MHz clock to
produce the various clock signals for the system. A PLL circuit synthesizes an 18.432
MHz clock for operating the host microprocessor and a 6.144 MHz clock for provid­ing the 48 kHz AES/EBU output sample rate clock in addition to providing the
AES/EBU input receiver with the ability to measure the input sample rate.

Component-Level Description:

The 16.384 MHz digital output from crystal oscillator Y602 feeds the master
clock (MCLK) inputs of both the input and the output SRC chips IC603 and
IC615. The 16.384 MHz clock also feeds flip-flop IC604, which divides by two to
produce an 8.192 MHz clock. The 8.192 MHz clock feeds digital multiplexer chip
IC610, which routes the 8.192 MHz to AES/EBU digital audio transmitter chip
IC616 when an internally generated 32 kHz output sample rate is selected. The

8.192 MHz clock is also sent to an 8-bit synchronous counter, implemented in
programmable logic array (PLA) IC613.

This counter divides down to obtain the lower frequency system clocks. All out­puts of the PLA have their transitions coincident with the rising edge of the 8.192
MHz clock. The 8.192 MHz clock is inverted by buffers IC605-A, -B to provide
clocks 8.192M HZA* and 8.192M HZB* that have falling edges coincident with
the transitions of the lower frequency clocks. 8.192M HZA* feeds the bit clock of
the inter-DSP communication links following buffers IC710-B, -D. 8.192M
HZB* feeds the A/D input clock (256 x sample rate), the L/R output D/A master
clock, and the input bit clock on both the L/R output D/A and the composite D/A.

The 2.048 MHz clock output from IC613 feeds the PLL circuit made up of PLA
IC618, 74HC4046 phase detector/VCO IC619 and associated components. The
PLA first buffers the 2.048 MHz signal, providing a clean 2.048 MHz output at
pin 12 used as the reference input to the PLL phase detector (IC619 pin 14). Of
the three detectors included in the 74HC4046, the phase frequency detector (PFD)
is used by the 2200/2200-D. The output of the phase detector (pin 13) feeds the
loop filter made up of resistors R607, R608 and capacitor C605 that provide a
single pole low-pass filter forming a second order loop. Pin 9 of IC619 is the in­put control voltage to the VCO. Resistor R614 eliminates subharmonic frequency
modulation of the VCO caused by parasitic capacitance. Resistors R605 and R606
set the PLL’s lock-in frequency range. A divide-by-nine counter is placed be­tween the VCO output and the phase detector comparator input. This places the
VCO output at 18.432 MHz. The PLA IC618 between pins 2 and 15 implements
the divide-by-nine. A 6.144 MHz clock is derived at the counter’s divide-by-three
point and is provided at pin 17 of the PLA. The PLA provides a buffered 18.432
MHz output at pin 14, which feeds Z-180 microprocessor IC100.

IC614-A, -D provide buffered clocks 2.048M HZA and 2.048M HZB for driving
the EXTAL inputs (pin 27) of the DSP chips. Each buffer drives four DSP chips.

The 256 kHz clock output of IC613 (pin 15) is required for the DSP-to-composite
D/A interface. The 128 kHz clock (pin 14) is used for the inter-DSP word clock.

OPTIMOD-FM DIGITAL TECHNICAL DATA

The 128 kHz, 64 kHz, and 32 kHz clocks are all used in the LCD backlight drive
circuit. The 32 kHz clock is also used for the input word clock of both the output
sample-rate converter (SRC) and the L/R output D/A. The 32 kHz clock is used to
generate DSP interrupt request signals (IRQBA, IRQBB) required for process
timing and interchip synchronization. The circuit consisting of flip-flop IC612
and IC614-B, -C is required to ensure that the first falling edges of all IRQB sig­nals are coincident. This synchronization occurs every time the unit is powered up
and when there is a processing algorithm change. It is controlled by the Z-180 via
pin 2 of latch IC611. The 32 kHz clock is also used, along with IC313, in the A/D
clock synchronizing circuit. This circuit makes the IRQB and the L/R clocks, both
operating at 32 kHz, phase synchronous. This ensures that the process-to-output
buffer transfer internal to the DSP does not overlap the output buffer-to-peripheral
transfer. The 8.192M HZB* clock that feeds the A/D input clock (IC312 pin 19)
is internally divided down to produce a 32 kHz word clock at IC312 pin 13 and a

2.048 MHz bit clock at pin 14. These clocks are used to control the A/D-to-DSP
serial interface and the input SRC-to-DSP serial interface.

AC terminations are used on various clocks throughout the board to improve sig­nal integrity for sensitive devices.

6-7

Control Circuits

The control circuits process and execute user-initiated requests to the system. The source
of these requests is the front panel buttons and the remote contact closures. These
changes affect hardware function and/or DSP processing. The control circuits also send
information to the LCD display, LED status, and LED meter circuits. A RAM chip stores
code segments. For quick access, an EEPROM chip stores dynamic system state informa­tion. A ROM chip contains the executable form of 2200/2200-D DSP and Control soft­ware.

1. Microprocessor and Power Monitoring Circuit

A Z-180 microprocessor executes software code required to control the functionality
of the 2200/2200-D. The EXTAL port of the Z-180 receives an 18.432 MHz clock
signal from the clock divider/PLL circuit and is internally divided down to 9.216
MHz to provide the Z-180 system clock frequency. ROM contains control software
for the Z-180. User system setup and other dynamic system state information that
must survive power down is stored in non-volatile EEPROM. Power monitoring cir­cuitry prevents data corruption by placing and holding the Z-180 in reset if AC mains
power is insufficient.

The Z-180 communicates to the DSP through the synchronous serial data host port.
When the DSP requires executable code, the Z-180 reads it from the ROM and sends
it to the DSP. The Z-180 sends parameter control data to the DSP and receives status
data from the DSP. If status from DSP is irregular, the Z-180 will place the
2200/2200-D hardware and DSP in a reset state and execute initialization procedures.

6-8

TECHNICAL DATA ORBAN Model 2200

Component-Level Description:

The Z-180 is IC100. Watchdog timer/voltage monitor IC122 provides the system
reset function. IC122 pin 7 monitors pulses generated every 1 second by the Z-

180. If the Z-180 is not operating correctly to provide the pulses, IC122 will reset
the Z-180. IC122 also monitors the voltage on the +5V source that supplies power
to the 2200/2200-D digital electronics. When the +5V line is above the minimum
operating voltage of +4.75V, R103 will pull RESET* high which allows the Z­180 to exit the reset condition. When the +5V line is below the minimum operat­ing voltage, the open-collector output of IC122 pulls Z-180’s RESET* low which
puts the Z-180 into the reset condition, thereby preventing the Z-180 and the
2200/2200-D electronics from executing incorrectly due to low +5V line voltage.

Z-180 IC100 pins 55, 56, and 57 comprise the host serial data communication
port. The Z-180 uses this port to communicate with the DSP IC700-IC707 via
host port interface pins 26, 35, and 41; and with EEPROM IC107 via pins 2, 5,
and 6. Communication is SPI type with Z-180 as master and DSP as slave.

2. RAM, ROM and EEPROM

A RAM chip provides temporary storage for Z-180 data and program code segments.
A ROM chip provides permanent storage of the executable control software and the
executable DSP software. System state information that must be maintained while the
2200/2200-D is powered down is stored in an EEPROM. The EEPROM does not lose
data when the 2200/2200-D is powered down.

Component-Level Description:

IC104 decodes Z-180 memory addresses to access instructions to execute from
ROM IC105 and to read or write data from 32KB RAM IC106. EEPROM IC107
is selected by latch IC611 pin 6.

3. Data Latches, Tri-State Data Buffers and Address Decoders

Digital logic decodes Z-180 I/O addresses, allowing the Z-180 to access RAM, ROM
and EEPROM. The logic provides Z-180 data bus allocation by using latches and tri­state data buffers to allow other 2200/2200-D hardware to communicate to the Z-180.
To control other hardware, the Z-180’s data bus state is latched at the appropriate
time, and the latched control signals are provided to other hardware. For the Z-180 to
read information from other hardware, the Z-180’s data bus is connected at appropri­ate times to other hardware’s source signals through tri-state data buffers (e.g. IC120).

Component-Level Description:

Decoder IC104 allows the Z-180 to access ROM IC105 and RAM IC106. Decod­ers IC101, IC102, and IC103 allow the Z-180 to access all other 2200/2200-D
hardware. The decoded outputs from IC101, IC102, and IC103 are used to latch
the state of the Z-180 data bus at appropriate times with data latches IC202,
IC205, IC207, IC303, IC305, IC609, IC611, IC708, and IC709, and to allocate

OPTIMOD-FM DIGITAL TECHNICAL DATA

the Z-180 data bus at appropriate times to various peripherals via tri-state data
buffers IC120, IC204, and IC601. IC120 buffers or tri-states status information
from the remote contact closure circuitry onto the Z-180 data bus. IC204 buffers
or tri-states information from the user control interface onto the Z-180 data bus.
IC601 buffers or tri-states status information from AES/EBU Receiver IC600
onto the Z-180 data bus.

6-9

User Control Interface and LED Display Circuits

The user control interface enables the user to control the functionality of the 2200/2200­D unit. A rear panel remote interface connector enables remote control of certain func­tions. Front panel pushbutton switches select between various operational modes and
functions. Data latches detect and store the commands entered with these switches. Front
panel status LEDs indicate the control status of the unit, and meter LEDs indicate signal
levels and processing activity within the unit.

1. Remote Interface

A remote interface connector and circuitry enables remote control of certain operating
modes; the 2200 has eight remote contact closure inputs.

A valid remote signal is a momentary pulse of current flowing through the particular
remote signal pins. Current must flow consistently for 50 msec for the signal to be in­terpreted as valid. Generally, the 2200/2200-D will respond to the most recent control
operation whether it came from the front panel, or remote interface.

Component-Level Description:

J101 is a 25-pin D-connector that connects the remote control input signals. The
connector incorporates a ferrite block to filter out RFI from the signals. The asso­ciated opto-isolators (e.g. IC110) isolate the inputs from the detector circuitry on
the 2200/2200-D. The associated diodes (e.g. CR102) prevent the opto-isolators
from breaking down under a reverse bias. The outputs of the opto-isolators are in­verted and buffered (e.g. by IC118-A) and latched by tri-state data buffer IC120.
When REMOTE* signal provided to IC120 pin 19 is brought low, IC120 places
remote signals on the Z-180 data bus.

2. Switch Matrix and LED Indicators

Ten front panel pushbutton switches are arranged in a matrix, configured as two col­umns and six rows (the FUNCTION and CONTRAST keys have dedicated rows).
These switches are the primary element of the physical user interface to the
2200/2200-D control software. The host microprocessor controls the system setup and
function of the DSP according to the switch/rotary encoder entered commands, the
AES Status bits from the Digital Input signal, and the remote control interface status;
it then updates the LED control status indicators accordingly.

6-10

TECHNICAL DATA ORBAN Model 2200

Component-Level Description:

S200-S208 and S210 are the front panel pushbutton switches. CR200-CR204 and
CR206 are the front panel LED control status indicators. Via decoder IC102, the
host microprocessor Z-180 periodically selects data latch IC202 (on the display
board) to drive one of the two columns in the switch matrix low, then commands
tri-state data buffer IC204 (also on the display board) to read its inputs to deter­mine if any new information is being received from one or more of the switches
in that column. If no switches are closed, pull-up resistors R202, R210-R213 pull
the buffer inputs to +5V. The buffer, in turn, de-bounces the signals and places
the appropriate word on the data bus for the Z-180 to read. The Z-180 transmits
the updated information to data latch IC202 which directly drives the LED Con­trol Status Indicators.

3. LED Meter Circuits

The meter LEDs are arranged in an 8x8 matrix, in rows and columns. Each row of
LEDs in the matrix has a 1/8 duty cycle ON time. The rows are multiplexed at a fast
rate so that the meters appear continuously illuminated. Via the serial port, the DSP
sends meter data values to the Z-180, which alternately sends pairs of mapped 8-bit
words to the data bus. One of the words, latched by a <169>row selector<170> latch,
has a single rotating active bit to select one of the eight rows. The other word, latched
by a <169>column selector<170> latch, has active bits corresponding to those of the
eight LEDs in the selected row that are to be lit. The latched words control high­current Darlington transistor arrays, which drive the LED matrix.

Component-Level Description:

The meter LED matrix consists of six 10-segment LED bargraph assemblies
(CR208-CR213) and three discrete LEDs (CR214-CR216). IC208 contains eight
Darlington transistors, each of which is connected to the cathodes of a row of the
LEDs. Row selector latch IC207, controlled by the Z-180, alternately turns one of
the eight transistors on, such that it will sink current through the LEDs selected by
column selector latch IC205, also controlled by the Z-180. IC205 turns on the ap­propriate transistors inside current driver IC206 to drive the selected row of
LEDs. IC206 gets its current from a storage capacitor fed directly by the power
transformer’s lower voltage secondary winding. Resistors RP200 function as cur­rent limiting resistors.

L/R Input Circuits

This circuitry interfaces the analog and digital audio to the DSP. The analog input stages
scale and buffer the input audio level to match it to the analog-to-digital (A/D) converter.
The A/D converts the analog input audio to digital audio. The digital input receiver ac­cepts AES/EBU-format digital audio signals from the digital input connector, and trans­mits them to the input sample rate converter (SRC). The digital audio from the A/D and
SRC is transmitted to the DSP.

OPTIMOD-FM DIGITAL TECHNICAL DATA

1. Analog Input Stages

The RF-filtered left and right analog input signals are each applied to a resistor load
and a resistor pad. The pad and load are enabled or disabled by jumpers that are posi­tioned by hand. The loaded and padded signal is applied to a floating-balanced ampli­fier that has an adjustable (digitally controlled) gain. FET transistors and analog
switches set the gain. The state of the FETs and switches is set by the outputs of a
latch. The control circuits control the gain according to what the user specifies from
the front panel controls by writing data to the latch. The gain amplifier output feeds a
circuit that scales, balances, and removes DC from the signal. This circuit feeds an RC
low-pass filter, which applies the balanced signal to the analog-to-digital (A/D) con­verter.

Component-Level Description:

The left channel balanced audio input signal is applied to the filter/load/pad net­work made up of L300, L301, L302, L303, R300-R305, C323 and C324. J301 is
a jumper that removes or inserts the optional 600Ω termination load (R300) on
the input signal. J302 and J303 are the jumpers that remove or insert the resistive
divider (R301-R303) that pads the input signal before it is applied to IC300, a dif­ferential amplifier. R306, R307, R310-R313, FETs Q300-Q301, and quad analog
switch IC307 make up the circuit that sets the gain of IC300. The FETs, along
with IC307, are used as switches to change the resistive paths in the circuit. The
state of the FET switches is set by the outputs of digital latches IC304 and IC305.
The latch outputs feed IC306, a quad comparator, which outputs 0V to turn on a
FET and –15V to turn off a FET. The control circuit writes directly to IC307 to
control the state of the switches on IC307. IC300 feeds IC302 and associated
components. This stage balances the signal and attenuates by 3.5 dB to scale the
signal to the proper level for the analog-to-digital (A/D) converter. IC301-B and
associated components comprise a servo amp to prevent DC from passing to the
DSP. R334, R337, C302, and C303 make a simple RC filter necessary to filter
high frequency energy that would otherwise cause aliasing distortion in the A/D
converter. The corresponding right channel circuitry is functionally identical to
that just described.

6-11

2. Stereo Analog-to-Digital (A/D) Converter

The A/D is a stereo, 20-bit sigma-delta converter. The A/D oversamples the audio at

2.048 MHz. It applies noise shaping; then it filters and decimates to a 32 kHz sample
rate. The samples are output in two’s complement, 32-bit word, two-word frame serial
format, with SPI compatible timing, MSbit first, and transmitted to the DSP. The 32
kHz frame clock and 2.048 MHz bit clock from the A/D function as master clocks for
the 2200/2200-D input to the DSP. For more information on 2200/2200-D input
clocking, please refer to 16.384 MHz Oscillator and System Clocking on page 6-5.

6-12

TECHNICAL DATA ORBAN Model 2200

Component-Level Description:

The balanced left and right analog inputs are applied to the A/D (IC312). The
maximum differential signal that the A/D can accept is ±7.36Vpeak. The A/D
samples the left and right inputs simultaneously at 64 times the 2200/2200-D sam­ple rate of 32 kHz. ICLKD, the master clock input of the A/D (pin 19), is fed an

8.192 MHz clock providing the 2.048 MHz input sample rate required. The A/D
sends the digitized stereo audio to the first DSP chip (IC700) via its synchronous
serial port formed by the data SDATA (pin 15), the bit clock SCLK (pin 14) and
the word clock L/R* (pin 13). The SPI communication standard is used for this
audio interface, with A/D as master and DSP IC700 as slave. The SPI format is:
32-bits/word, multiplexed stereo, word clock low represents left data present,
MSB first, data transitions occur on rising edge of the bit clock, first 18 bits are
valid, trailing bits are set low, MSB delayed one bit period from word clock edge.
IC314 provides buffering to reduce the drive requirement of the on-board drivers
on the A/D and to ensure that there are no overshoots or undershoots as a result of
transmission line reflections that may degrade the performance of the A/D.
IC109-D is required to invert the word clock to support the SPI interface.

3. Digital Input Receiver and Sample Rate Converter (SRC)

The digital input receiver accepts digital audio signals using the AES/EBU interface
format (AES3-1992). The receiver and input sample rate converter (SRC) together
will accept and sample-rate convert any of the “standard” 32 kHz, 44.1 kHz, 48 kHz
rates in addition to any digital audio sample rate within the range of 25 kHz and 55
kHz. The audio signal received is decoded by the AES receiver and sent to the SRC.
The SRC converts the input sample rate to the 32 kHz 2200-D system sample rate.
Via a synchronous serial interface, the SRC sends the 32 kHz sample rate audio to the
DSP for processing.

Component-Level Description:

The differential digital input signal is received through a shielded 1:1 pulse trans­former (T600). T600 has very low inter-winding capacitance, providing a high
level of isolation for high frequency common mode interference. IC600 is a dedi­cated AES/EBU digital audio receiver integrated circuit. It contains a phase
locked loop that recovers the clock and the synchronization information present in
the AES/EBU signal. A Schmitt trigger at the input provides 50mV of hysteresis
for added noise immunity. R600 provides an 110Ω input impedance per the
AES/EBU specification.

The Z-180 provides the active high reset signal (AES_RST) to IC600 mode con­trol pins 17, 18, and 23, via latch IC609 pin 6. This is used when the 2200-D is
asked to respond to analog audio input. When in the reset state, the receiver holds
all outputs inactive (except MCK pin 19).

IC600 pins 2 through 6 and pin 27 are an output latch that provides AES/EBU
status information, selected by the STATSEL line. The information on this latch
is provided to the Z-180 data bus via tri-state data buffer IC601. STATSEL signal
from IC611 pin 12 is applied to IC600 pin 16. When STATSEL is high, pins 2

OPTIMOD-FM DIGITAL TECHNICAL DATA

through 6 and pin 27 contain information about the channel status bits. When
STATSEL is low, pins 2 through 6 and pin 27 contain input sample rate and error
information. The Z-180 reads these to determine if a valid AES/EBU signal and
sample rate is present. CHSEL is used to select whether channel A or channel B
status bits are present on IC600’s output latch. When STATSEL is low, left chan­nel status is made available, and when STATSEL is high, right channel status is
made available.

Received AES audio is transmitted from the AES receiver to the input sample rate
converter (SRC IC603), in the synchronous serial SPI format. The AES receiver
is master and the SRC is slave. The AES receiver outputs data on pin 26, the bit
clock on pin 12, and the frame clock on pin 11. The frame clock is inverted by
IC605-F for compatibility with the SRC’s input port. These signals are sent to the
SRC serial input interface pins 3, 4, and 6 respectively.

The MCK clock output at pin 19 of the AES receiver chip has a frequency 256
times the input sample rate of the received signal. This is used to drive the output
AES/EBU transmitter when an output sample rate that is synchronous to the input
sample rate (external sync) is required.

The crystal oscillator (Y602) provides the SRC a master clock of 16.384 MHz on
pin 2. This MCLK frequency allows the input SRC to operate with input sample
rates in the range of 8.192 kHz (MCLK/2000) to 57 kHz (MCLK/286). SRC_RST
is an active low reset signal tied to pin 13 of the SRC. This signal is controlled by
the Z-180 via pin 2 of latch IC609.

6-13

The MSDLY_I, BKPOL_I, and TRGLR_I pins of the SRC chip configure the
chip for SPI format. Pin 1 of the SRC (GPDLYS) is tied high to minimize the
chip’s group delay to approximately 700µs as opposed to approximately 3ms, giv­ing up some tolerance to variations in sample rates. Pin 28 (SETLSLW) is tied
high to cause the SRC to settle slowly to changes in sample rates, resulting in the
best rejection of sample rate jitter.

The sample rate converted output of the input SRC feeds the first DSP chip
(IC700). The SRC output port and the DSP input port are both slaves, with clocks
supplied by the L/R input A/D converter (IC312). The SRC generates DIG_IN
(data) on pin 23, and receives the bit clock and the word clock on pins 26 and 24
respectively. An inverted version of this word clock is used by the DSP chip to
conform with the SPI format it requires.

L/R Output Circuits

This circuitry interfaces the DSP to the analog and digital audio outputs. The digital audio
from the DSP is transmitted to the digital-to-analog converter (D/A) and output sample
rate converter (SRC). The digital-to-analog (D/A) converter converts the digital audio
words generated by the DSP to analog output audio. The MDAC stages scale and buffer
the D/A output signal to drive the analog output stages to the correct level. The analog
output stages drive the analog output XLR connectors with a low impedance, floating
balanced output. The digital output transmitter accepts the digital audio words from the

6-14

TECHNICAL DATA ORBAN Model 2200

output sample rate converter (SRC) and transmits them in AES/EBU-format digital audio
signals on the digital output connector.

1. Stereo Digital-to-Analog (D/A) Converter

The D/A is a single chip, stereo, 20-bit delta-sigma converter.

For information on 2200/2200-D system clocking, please refer to 16.384 MHz Oscil-
lator and System Clocking on page 6-5.

Component-Level Description:

IC400 is the digital-to-analog (D/A) converter for the left and right output signals.
The synchronous serial input interface consists of the bit clock, data and latch en­able pins that are configured for the SPI format via DIF0 and DIF1 pins (for de­tails on SPI, see page 6-12. The processed digital output (ANLG_OUT) is pro­vided by DSP IC706 on its SAI output port SDO0 (pin 47), and is received by the
D/A on pin 18.

An 8.192 MHz bit clock is provided from the system clock circuitry to both the
DSP and the D/A chips. The DSP output data format is SPI (32 bits per word, two
words per frame). DSP chip IC706 receives a 128 kHz frame clock at its WST in­put (pin 50) that sets the word transfer rate to eight words per 32 kHz period. The
D/A receives a 32 kHz clock at its LRCK input (pin 20). LRCK delineates the left
and right samples used by the D/A; therefore the D/A uses the first sample re­ceived for the left output and the fifth sample for the right output. The DSP output
samples are formatted to ensure that the D/A uses a left and right output pair that
represent the simultaneously sampled analog input.

2. Analog Output Stages

The left and right analog signals emerging from the digital-to-analog (D/A) converter
are each RC low-pass filtered and applied to an inverting amplifier having an adjust­able (digitally controlled) gain. The gain is set by an MDAC. The state of the MDAC
is set by the outputs of a latch. The control circuits control the gain according to what
the user specifies from the front panel controls by writing data to the latch. The gain
amplifier feeds a programmable de-emphasis filter stage with its response digitally
controlled by JFET switches. The de-emphasis stage feeds a floating-balanced line
driver, having a 30Ω ±5% output impedance. The line driver outputs are applied to the
RF-filtered left and right analog output connectors.

Component-Level Description:

The left channel signal emerging from the digital-to-analog (D/A) converter is RC
low-pass filtered by R402 and C407 to remove high frequency images. It is then
applied to an adjustable gain amplifier formed by VR400, R404-R406, C409,
IC401, and IC402-A. These components form an inverting amplifier circuit.
IC401 is an 8-bit MDAC, which is a resistor ladder with a programmable resis­tance. The control circuit writes an 8-bit word directly to IC401, which has a latch

OPTIMOD-FM DIGITAL TECHNICAL DATA

on board to store the word. The word sets the resistance value between pin 15 and
pin 1 of IC401. IC402-A forces pin 1 of IC401 to virtual ground. The resistance
between pin 1 and pin 16 of IC401, and resistors R404-R406 and VR400 are in
the feedback loop of IC402-A. C409 stabilizes this stage. VR400 is a factory gain
trim to correct for tolerances in IC401, IC400, and the rest of the analog output
circuits.

IC402-A feeds the stage consisting of IC402-B and associated components, which
are a programmable de-emphasis filter. JFETs Q400 and Q401 are used to switch
C410 and C411, respectively, in or out of the circuit. The state of the JFET
switches is set by the outputs of IC305, a digital latch. The latch outputs feed
IC407, a quad comparator, which outputs 0V to turn on a FET and –15V to turn
off a FET. If neither of the JFETs are on, the circuit is a unity-gain inverting am­plifier. The circuit becomes a first-order low-pass filter if one of the JFETs is
turned on. If Q400 is on, capacitor C410 is in circuit to create a 75µs time con­stant. If Q411 is on, capacitor C401 is in circuit to create a 50µs time constant.

IC402-B feeds the stage consisting of IC403-A, IC403-B, IC408-A, and associ­ated components, which is a floating-balanced line driver. The floating character­istic is achieved by complex cross-coupled positive and negative feedback be­tween two 5532 opamps, and its operation is not readily explainable except by a
detailed mathematical analysis. Opamps may be replaced; resistors are specially
matched and should not be replaced. IC408-A, R444, R445, R447, and C419
comprise a servo amplifier that centers around ground the average DC level at
output connector J400.

6-15

The balanced audio output signal is applied to the RF filter network made up of
L400, L401, L402, and L403, and then to XLR connector J400.

The corresponding right channel circuitry is functionally identical to that just de­scribed.

3. Digital Sample Rate Converter (SRC) and Output Transmitter

An output sample rate converter (SRC) chip is used to convert the 32 kHz 2200-D
system sample rate to any of the standard 32 kHz, 44.1 kHz or 48 kHz rates. A digital
audio interface transmitter chip is used to encode digital audio signals using the
AES/EBU interface format (AES3-1992). A synchronous serial interface is used for
all interchip communication.

Component-Level Description:

The processed digital output (DIG_OUT) provided at the SAI output port SDO0
(pin 47) of DSP IC706 is received by asynchronous sample rate converter (SRC)
IC615 pin 3. An 8.192 MHz bit clock is provided from the system clock circuitry
to both the DSP and the SRC chips. The DSP output data format is SPI (32 bits
per word two words per frame). DSP chip IC706 receives a 128 kHz frame clock
at its WST input (pin 50) that sets the word transfer rate to eight words per 32
kHz period. The SRC receives a 32 kHz clock at its L/R*_I input (pin 6). L/R*_I

6-16

TECHNICAL DATA ORBAN Model 2200

delineates the left and right samples used by the SRC; therefore the SRC uses the
first sample received for the left input and the fifth sample for the right input. The
DSP output samples are formatted to ensure that the SRC uses a left and right out­put pair that represent the simultaneously sampled analog input.

The crystal oscillator (Y602) provides the SRC a master clock of 16.384 MHz on
pin 2. This MCLK frequency allows the output SRC to operate with an output
sample rate in the range between 30 kHz and 57 kHz (operation between 8 kHz
and 30 kHz will result in a one sample delay between the left and right channels).
SRC_RST is an active low reset signal tied to pin 13 of the SRC. This signal is
controlled by the Z-180 via pin 2 of latch IC609.

The MSDLY_I, BKPOL_I, and TRGLR_I pins of the SRC chip configure the
chip for SPI format. Pin 1 of the SRC (GPDLYS) is tied high to minimize the
chip’s group delay to approximately 700µs as opposed to approximately 3ms,
giving up some tolerance to variations in sample rates. Pin 28 (SETLSLW) is tied
high to cause the SRC to settle slowly to changes in sample rates, resulting in the
best rejection of sample rate jitter.

The output side of the sample rate converter is tied directly to IC616, an
AES/EBU digital audio transmitter integrated circuit. This interface uses the SPI
format with the AES transmitter as master. The transmitter chip encodes the audio
data it receives to the AES/EBU interface standard, and transmits it.

The SRC output sample rate and the sample rate that the AES/EBU transmitter
transmits with is based on the MCK clock provided to pin 5 of IC616. This clock
is received via digital multiplexer chip IC610 which is used to select one of four
available clocks. Three free-running clocks provide the standard sample rates of
32 kHz, 44.1 kHz and 48 kHz when an internal sync is requested. These clocks
run at a frequency that is 128 times the sample rate they represent. They have a
frequency stability of ±100PPM. The fourth clock is the EXTMCK clock that is
recovered from the AES/EBU receiver chip. This clock has a frequency of 256
times the input sample rate of the received signal. This is used to drive the output
AES/EBU transmitter when an output sample rate is required that is synchronous
to the input sample rate (external sync).

The inter-chip serial data format, the input MCK multiplication factor, and the
output channel status data are controlled by the Z-180 via internal control regis­ters and data memory accessed through the parallel port made up of the 5-bit ad­dress bus (pins 9-13), the 8-bit data bus (pins 1-4, 21-24) and the CS* and
RD/WR* control pins (pins 14 and 16) of IC616.

The on-chip RS422 line driver provided by IC616 is a low skew, low impedance,
differential output capable of driving a 110Ω transmission line with a 4Vp-p sig­nal. Shielded 1:1 pulse transformer T601 transmits the differential digital output
signal to XLR connector J601. T601 has very low inter-winding capacitance, pro­viding a high level of isolation from high frequency common mode interference.

OPTIMOD-FM DIGITAL TECHNICAL DATA

Composite Output Circuits

This circuitry provides several functions. It interfaces the digital stereo multiplex output
from the stereo encoder DSP to a digital-to-analog (D/A) converter, which converts it to
an analog signal. The low-pass reconstruction filter removes high frequency images from
the D/A converter output and feeds the output buffers. Two output stages with separate
level controls buffer the stereo multiplex signal and feed the composite output connectors.

1. Digital-to-Analog (D/A) Converter

The composite D/A is a single chip, 18-bit resistor ladder type. It has a single channel
serial input that receives the digital stereo encoded output samples from the DSP. It is
a surface-mount part that is mounted on a small daughterboard, replacing the DIP
package previously used in the 2200.

Component-Level Description:

IC500 is the digital-to-analog converter for the stereo-encoded composite signal.
The synchronous serial input interface consists of the bit clock, data and latch en­able pins. DSP IC707 provides serial data (COMP_O) to pin 7 of the composite
D/A.

6-17

An 8.192 MHz bit clock is provided from the system clock circuitry to both the
DSP and the D/A chips. The DSP output data format is 32-bits per word two
words per frame, MSB first (first 24-bits are significant). DSP IC707 receives a
128 kHz frame clock at its WST input (pin 50) that sets the word transfer rate to
256 kHz. The D/A receives a 256 kHz clock at its latch enable (LE) input (pin 6).
The D/A uses the last 18-bits received prior to the falling edge of LE (last 18-bits
are significant). Flip-flop IC604-A is used to invert and shift the 256 kHz system
clock to produce an LE signal that has a falling edge aligned with the 18
cant data bit.

Pin 9 is the analog voltage output of IC500. The voltage changes to the current
sample value on the falling edge of the 256 kHz clock. A full scale output is ap­proximately ±3.0Vpeak, which corresponds to 141% modulation. C517 prevents
slew-induced distortion.

th

signifi-

2. Analog Reconstruction Filter

The reconstruction filter removes the ultrasonic energy “images” present at the D/A
output. It is a passive seventh-order elliptic filter with a cutoff frequency of approxi­mately 70 kHz and >90 dB stopband attenuation above 203 kHz.

Component-Level Description:

The reconstruction filter is a passive seventh-order LC ladder filter, realized by
resistors R501, R502 and R504, capacitors C508-C512, C516, and C518, and in-

6-18

TECHNICAL DATA ORBAN Model 2200

ductors L500-L502. The frequency response of this filter cannot be measured by
applying a swept sine wave at the 2200/2200-D analog inputs. This is because the
filter has bandwidth much larger than the analog-to-digital converter. (The ana­log-to-digital converter band-limits the input to 16 kHz.) Stereo separation is a
very sensitive function of the frequency and phase response of this filter in the
frequency range of 20-53,000 Hz.

The filter is buffered by non-inverting amplifier IC502-A and applied to the out­put stages. IC501-A is a DC servo to prevent DC from appearing at the composite
outputs.

3. Composite Baseband Output Stages

The buffered filter output is applied to two power buffers each capable of driving two
75Ω loads in parallel.

Component-Level Description:

The stereo modulator output is fed into two separate output buffers. The first con­sists of IC503-A and IC504. IC504 is a special high slew rate power buffer, which
is located within the overall amplifier feedback loop. It isolates IC503-A from the
destabilizing effects of capacitive loads and permits 75Ω loads to be driven with­out degradation. This line driver will drive up to ±1.5Vpeak into 0.047uF in paral­lel with 37.5Ω before significant nonlinear errors (increases in spurious compo­nents as observed on a baseband spectrum analyzer) or linear errors (noticeable
deterioration of baseline flatness at 15 kHz in the separation test mode) are appar­ent. Output level is adjusted by varying the feedback resistor VR500. The second
output buffer made by IC505-A and IC506 is functionally identical to the one just
described.

DSP Circuits

The DSP circuits consist of eight general-purpose DSP chips that execute DSP software
code to implement digital signal processing algorithms. The algorithms filter, compress,
limit, and stereo encode the audio signal. The eight DSP chips, operating at 25 million
instructions per second (MIPS) for a total of 200MIPS, provide the necessary signal
processing. Sampling rates from 32 kHz to 128 kHz are used. Two of the on-board serial
audio interface (SAI) peripherals on each DSP chip are used to transfer data chip-to-chip
at a 16.384Mbit/s rate maintaining a 24-bit word length. The DSP chips are cascaded,
processing the audio serially. The first chip receives the analog input via the A/D chip and
the digital input via the SRC chip. Input source selection is performed seamlessly, inter­nal to the DSP chip.

During system initialization (which normally occurs when power is first applied to the
2200/2200-D), and when processing algorithms are changed, the Z-180 downloads the
DSP executable code stored in the ROM, via the serial host interface (SHI) port of each
DSP chip. Once a DSP chip begins executing its program, execution is continuous. The
Z-180 provides the DSP program with parameter data, and extracts the front panel meter­ing data from the DSP chips via this same SHI port.

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-19

The left and right analog and digital outputs are sent to the L/R output D/A and the output
SRC chip via the SAI port of DSP chip IC706. The last DSP chip (IC707) outputs the
composite audio signal on its SAI port where it is directed to the composite D/A.

Component-Level Description:

IC700 thru IC707 are the DSP chips. Do not attempt to remove these chips from
the PCB; only the Orban service department should remove these chips. A chip
can be ruined by static discharge or by damage to its delicate pins.

The EXTAL pin of each DSP chip receives a 2.048 MHz clock. All DSP chips
use their internal PLL to multiply this by 24 to operate the chip’s internal oscilla­tor (Fosc) at 49.152 MHz. Each DSP chip is reset by the Z-180 via latch IC709.
DSP mode configuration is controlled by the state of the MODA, MODB and
MODC (pins 37, 38, 39) on each chip as the chip is brought out of reset. All DSP
chips are configured to bootstrap via the SHI port. The MODB pin, which also
serves as the IRQB input after leaving the reset state, is forced low prior to bring­ing the DSP chips out of reset.

Pins 26, 35, 41 and 42 comprise the DSP host port. Host port communication con­forms to the SPI format with the Z-180 set-up as the master and the DSPs as
slaves. The Z-180 generates the HOSTCK clock signal and provides it to SCK
(pin 26) of each DSP. The Z-180 provides the data on the HOSTTX line tied to
pin 41 of each DSP. The data output (pins 35) of each DSP have tri-state outputs
that are wire-ORed to provide the data on the HOSTRX line sent to the Z-180.
The Z-180 controls the slave select (SS*) (pin 42) of each DSP via latch IC708.
The SS* pin is used to enable each of the slaved DSP SPI ports for transfer.

DSP IC700 pins 56 and 57 receive serial stereo audio from the digital and analog
inputs. These are the two input ports of the synchronous serial audio interface
(SAI) receiver internal to the DSP. The communication protocol is SPI with DSP
as a slave, and L/R input A/D converter IC312 as master. Left and right data
words, each of 32-bit length, constitute a frame. Eighteen significant bits are re­ceived from the analog input A/D and twenty significant bits are received from
the digital input SRC. The two serial stereo audio streams are received simultane­ously. Both inputs share the same frame clock, L*/R (32 kHz) provided to DSP
IC700 pin 55 and the same bit clock, SCK (2.048 MHz) provided to DSP IC700
pin 51.

Communication between DSP chips IC700 (first) thru IC707 (last) is one-way, in
series from the first to the last. Two of the on-board SAI peripherals on each DSP
are used to transfer eight words each per frame chip-to-chip. The SPI communica­tion protocol (two 32-bit words per cycle of the word clock) is used with the
DSPs as slaves, and the 2200/2200-D system clocking as master. Data is sent
from the two transmit data port pins 46 and 47 of one chip to the next chip’s re­ceive data port pins 56 and 57. A 128 kHz word clock is provided to the transmit
pin 50 and the receive pin 55. An 8.192 MHz bit clock is provided to the transmit
pin 49 and the receive pin 51. The SAI links between DSPs are synchronized to
each other (to align the SAI time slots) by making the first occurrence of all
IRQBs coincident, (controlled by Z180 and external hardware) and having all

6-20

TECHNICAL DATA ORBAN Model 2200

DSPs initialize their SAI ports on the first reception of IRQB.

The “analog” and digital outputs are transferred respectively to the L/R output
D/A and the output SRC from the second to the last DSP chip (IC706). These sig­nals are identical except for any De-Emphasis, J.17 Pre-Emphasis, J.17 Emphasis
makeup gain, or output attenuation (DO 100% level) applied to the digital output.
The “analog” output is also passed on to the last DSP chip (IC707) for stereo en­coding. (“Analog”refers to DSP signal that ultimately gets converted to analog.)

The composite FM stereo signal is output from the last DSP chip (IC707) via its
SAI transmitter, formed by DSP IC707 pins 47, 49, and 50. A communication
protocol compatible with the composite D/A (IC500) is used with the DSP and
D/A as slave and the 2200/2200-D system clocking as master. The serial compos­ite audio bit stream output on pin 47 feeds D/A IC500 pin 7. DSP IC707 pin 50
receives a 128 kHz frame clock and pin 49 receives an 8.192 MHz bit clock. Two
consecutive composite audio data words, each of 32-bit length, constitute a frame.

Power Supply

The power supply converts an AC line voltage input to various power sources used by the
2200/2200-D. Five linear regulators provide ±15VDC and ±5VDC for the analog circuits
and +5VDC for the digital circuits. An unregulated voltage powers the LED meters and
the LED backlight on the LCD display.

Component-Level Description:

L1 is a power line filter that filters out RFI. F1 is a ½-amp “Slo-Blo” fuse. T1 is a
dual-primary dual-secondary power transformer used to step down the input volt­age for the ±15VDC analog and +5VDC digital supply regulators. Each primary
winding has a metal-oxide varistor (V1, V2) connected in parallel to suppress
high-voltage spikes across the AC line. Rear panel switch S1 configures the pri­mary windings either in parallel (for 115V ±15% line voltages) or series (for
230V ±15% line voltages).

T1 has two pairs of secondary windings for stepping down the AC line voltage.
The lower voltage pair is configured in parallel, and feeds storage capacitors C15
and C19 through full-wave bridged rectifier diodes CR13, CR14, CR15, CR17,
and CR18. C15 filters the rectified voltage for input to low-dropout linear voltage
regulator IC5, which provides the +5VDC source used to power all of the digital
circuits in the 2200/2200-D. C19 filters the rectified voltage to power the LED
backlight on the LCD display, and the LED meters. Components Q1, Q2, R3-R7,
and CR20 form a pulsed current source to illuminate the 25x2 LED array (the
backlight on the LCD display). The signal LEDPULSE, a 32 kHz pulse at c duty
cycle, feeds the base of high-current Darlington transistor Q1. The feedback cir­cuit consisting of Q2, CR20 and R3-R7 controls the magnitude of the signal
LEDPULSE so as to limit Q1’s current pulses to about 1.5A (1/8 duty cycle).
These current pulses illuminate the 25 x 2 LED array via keyed header J201,
which attaches the LED array between the collector of Q1 and supply cap C19.
The signal LEDPULSE is gated on for approximately one hour after the 2200 has
last been powered up or a front panel button has last been pressed; otherwise, it is

OPTIMOD-FM DIGITAL TECHNICAL DATA

gated off. This drastically increases the lifetime of the LCD display and saves
about two Watts of power. The LED meter circuits are described in User Control
Interface and LED Display Circuits on page 6-9.

The higher voltage pair of transformer secondary windings is configured in series
to form a single center-tapped winding. This winding is connected to rectifier di­odes CR1-CR4 in a full-wave center tap configuration. C1 and C2 filter the recti­fied voltage for input to the voltage regulators IC1 and IC2. These regulators pro­vide the +15VDC and –15VDC sources used to power most of the analog circuits
in the 2200/2200-D. They also serve as the respective inputs to the voltage regula­tors IC3 and IC4. These regulators provide the +5VDC and –5VDC analog sup­plies for the converter chips, which draw only a modest amount of current.

Test points and supply bypass capacitors are placed throughout the PC board. S2
is the ground lift switch used to connect or lift 2200/2200-D circuit ground from
chassis ground.

Abbreviations

6-21

Some of the abbreviations used in this manual may not be familiar to all readers:

A/D (or A to D) analog-to-digital converter
AES Audio Engineering Society
AGC automatic gain control
A-I analog input
A-O analog output
BAL balanced (refers to an audio connection with two active conductors and one shield sur-

BBC British Broadcasting Corporation
BNC a type of RF connector
CALIB calibrate
CIT composite isolation transformer
CMOS complementary metal-oxide semiconductor
COM serial data communications port
D/A (or D to A) digital-to-analog converter
dBm decibel power measurement. 0 dBm = 1mW applied to a specified load. In audio, the load

dBu decibel voltage measurement. 0 dBu = 0.775V RMS. For this application, the dBm-into-

DI digital input
DJ disk jockey, an announcer who plays records in a club or on the air
DO digital output
DOS Microsoft disk operating system for IBM PC
DSP digital signal processor (or processing). May also refer to a special type of microprocessor

EBU European Broadcasting Union
EBS Emergency Broadcasting System (U.S.A.)
EMI electromagnetic interference
ESC escape
FCC Federal Communications Commission (USA regulatory agency)

rounding them).

is usually 600Ω. In this case only, 0 dBm = 0.775V rms.

600Ω scale on voltmeters can be read as if it were calibrated in dBu.

optimized for efficiently executing arithmetic.

6-22

TECHNICAL DATA ORBAN Model 2200

FDNR
FET field effect transistor
FFT fast Fourier transform
FIFO first-in, first-out
G/R gain reduction
HF high-frequency
HP high-pass
IC integrated circuit
IM intermodulation (or “intermodulation distortion”)
I/O input/output
ITU International Telecommunications Union (formerly CCIR). ITU-R is the arm of the ITU dedi-

JFET junction field effect transistor
LC inductor/capacitor
LCD liquid crystal display
LED light-emitting diode
LF low-frequency
LP low-pass
LVL level
MHF midrange/high-frequency
MLF midrange/low-frequency
MOD modulation
N&D noise and distortion
N/C no connection
OSHOOT overshoot
PC IBM-compatible personal computer
PCM pulse code modulation
PPM peak program meter
RAM random-access memory
RC resistor/capacitor
RDS/RBDS Radio (Broadcasting) Data Service—a narrowband digital subcarrier centered at 57 kHz in

REF reference
RF radio frequency
RFI radio-frequency interference
RMS root-mean-square
ROM read-only memory
SC subcarrier
SCA

S/P-DIF Sony/Philips digital interface
TRS tip-ring-sleeve (2-circuit phone jack)
THD total harmonic distortion
TX transmitter
µs Microseconds. For FM pre-emphasis, the +3 dB frequency is 1/(2 π τ), where τ is the pre-

VCA voltage-controlled amplifier
VU volume unit (meter)
XLR a common style of 3-conductor audio connector
XTAL crystal

frequency-dependent negative resistor⎯an element used in RC-active filters

cated to radio.

the FM baseband that usually provides program or network-related data to the consumer in
the form of text that is displayed on the radio. Occupied bandwidth is ±2500 Hz.

subsidiary communications authorization ⎯ a non program-related subcarrier in the FM
baseband above 23 kHz (monophonic) or 57 kHz (stereophonic)

emphasis time constant, measured in seconds.

OPTIMOD-FM DIGITAL TECHNICAL DATA

Parts List

Obtaining Spare Parts

Special or subtle characteristics of certain components are exploited to produce an ele­gant design at a reasonable cost. It is therefore unwise to make substitutions for listed
parts. Consult the factory if the listing of a part includes the note “selected” or “realign­ment required.”

Orban normally maintains an inventory of tested, exact replacement parts that can be
supplied quickly at nominal cost. Standardized spare parts kits are also available. When
ordering parts from the factory, please have available the following information about the
parts you want:

Orban part number
Reference designator (e.g., C3, R78, IC14)
Brief description of part
Model, serial, and “M” (if any) number of unit ⎯ see rear-panel label

6-23

To facilitate future maintenance, parts for this unit have been chosen from the catalogs of
well-known manufacturers whenever possible. Most of these manufacturers have exten­sive worldwide distribution and may be contacted through their local offices. Addresses
for each manufacturer's USA headquarters are given on page 6-43.

About the Parts List

Parts are listed by ASSEMBLY, then by ECO (engineering change order) NUMBER (in
chorological order, earliest to latest), then by TYPE, then by REFERENCE
DESIGNATOR. The ECO can be found on the schematics for each version of the assem­bly. In this way, you can associate a given parts list to a given schematic.

Full parts lists are only shown for the oldest version of the board. After that, parts lists
only show parts that have changed from one version to the next. [deleted] in a list indi­cates that a part existing in the next oldest version has been removed.

Widely used common parts are described generally below (examine the part to determine
its exact value). See the following assembly drawings for locations of components.

• Signal diodes, if not listed by reference designator in the following parts list, are:

Orban part number 22101-000; JEDEC part number 1N4148; also available
from many other vendors. This is a silicon small-signal diode with ultra-fast
recovery and high conductance. It can be replaced with 1N914 (BAY-61 in
Europe).

(BV: 75V min. @ Ir = 5µA; Ir: 25nA max. @ Vr = 20V; Vf: 1.0V max. @ If =
100mA; trr: 4ns max.)

6-24

TECHNICAL DATA ORBAN Model 2200

• See Miscellaneous list for Zener Diodes (reference designator VRxx).

• Resistors should only be replaced with the same style and with the exact value

marked on the resistor body. If the value marking is not legible, consult the schematic
or the factory. Performance and stability will be compromised if you do not use exact
replacements. Unless listed by reference designator in the following parts list, you
can verify resistors by their physical appearance:

• Metal film resistors have conformally coated bodies, and are identified by five color

bands or a printed value. They are rated at c watt @ 70°C, ±1%, with a temperature
coefficient of 100 PPM/°C. Orban part numbers 20038-xxx through 20045-xxx, USA
Military Specification MIL-R-10509 Style RN55D. Manufactured by R-Ohm (CRB­1/4FX), TRW/IRC, Beyschlag, Dale, Corning, and Matsushita.

• Carbon film resistors have conformally-coated bodies, and are identified by four

color bands. They are rated at ¼ watt @ 70°C, ± 5%. Orban part numbers 20001-xxx,
Manufactured by R-Ohm (R-25), Piher, Beyschlag, Dale, Phillips, Spectrol, and Mat­sushita.

• Carbon composition resistors have molded phenolic bodies, and are identified by

four color bands. The 0.090 x 0.250 inch (2.3 x 6.4 mm) size is rated at ¼ watt, and
the 0.140 x 0.375 inch (3.6 x 9.5 mm) size is rated at ½ watt, both ± 5%. Part num­bers 2001x-xxx, USA Military Specification MIL-R-11 Style RC-07 (<$E1/4> watt)
or RC-20 (<$E1/2> watt). Manufactured by Allen-Bradley, TRW/IRC, and Matsu­shita.

• Cermet trimmer resistors have d-inch (9 mm) square bodies, and are identified by

printing on their sides. They are rated at ½ watt @ 70°C, = ±10%, with a temperature
coefficient of 100 PPM/°C. Orban part numbers 20510-xxx and 20511-xxx. Manu­factured by Beckman (72P, 68W- series), Spectrol, and Matsushita.

Display Assembly

2200 PCA Display 31875.000.01 Rev 01, ECO 2216A

Schematic Rev 01 ECO 2216A Displ r01 ECO 2216A

Orban Part # Description Quantity Reference Designators

15057.010.01 SPACER, .100" HIGH 24

15061.005.01 LED MNT,1 POS'N,.240"HIGH 6 CR203, CR204, CR206, CR214,
CR215, CR216

20121.274.01 RESISTOR, METAL FILM 1/8W

1%

20125.100.01 RESISTOR,TF,1/8W,1%,100K 6 R202, R208, R210-R213

20226.184.01 RESISTOR, NETWORK, DIL

PACKAGE,2%,180 OHM

21131.410.01 CAPACITOR, SUFACE-MOUNT

1206,0.1UF,50V,20%

24740.000.01 IC ULN2803LW SMD OCTAL 1 IC208

24741.000.01 IC UDN2982 SMD OCTAL 1 IC206

24851.000.01 IC,SOL20,SMT 1 IC204

24857.000.01 IC 74HC374 DLATCH SOL20 3 IC202, IC205, IC207

8 R200, R201, R203, R204,

R205, R206, R207, R209

1 RP200
2 C200, C201

OPTIMOD-FM DIGITAL TECHNICAL DATA

Schematic Rev 01 ECO 2216A Displ r01 ECO 2216A

25106.001.01 LED,YELLOW,T-1,HIGH
EFFICIENCY LAMP

25106.002.01 LED,GREEN,T-1,HIGH
EFFICIENCY LAMP

25106.003.01 LED,RED,T-1,HIGH EFF LAMP 1 CR216

25167.000.01 LED,ARRAY,1 RED,1 YEL,8
GREEN

25168.000.01 LED,ARRAY,10 position,9 YEL,1
RED

31876.000.01 CIRCUIT BOARD, DISPLAY 2200 1

42028.040.01 ASSEMBLY CABLE RIBBON
16PIN 4"

61182.000.01 SCHEMATIC, DISPLAY 2200 0

5 CR200, CR201, CR202, CR214,

CR215

3 CR203, CR204, CR206

3 CR211, CR212, CR213
3 CR208, CR209, CR210

1 P203

2200 PCA Display 31875.000.01 Rev 02, ECO 2234

Schematic Rev 01 ECO 2216A Displ r02 ECO 2234

Orban Part # Description Quantity Reference Designato rs

15057.010.01 SPACER, .100" HIGH 18

27214.004.01 CABLE FLAT 4 COND 1 P202

31876.000.02 CIRCUIT BOARD, DISPLAY 2200 1

42009.040.01 ASSEMBLY CABLE RIBBON
16PIN 4"

42028.040.01 ASSEMBLY CABLE RIBBON
16PIN 4"

1 P203
1 P203 [delete]

6-25

2200 PCA Display 31875.000.01 Rev 03, ECO 2310

Schematic Rev 01 ECO 2216A Displ r03 ECO 2310

Orban Part # Description Quantity Reference Designato rs

31876.000.03 CIRCUIT BOARD, DISPLAY 2200 1

61182.000.01 SCHEMATIC, DISPLAY 2200 0

2200 PCA Display 31875.000.01 Rev 04, ECO 2255

Schematic Rev 01 ECO 2216A Displ r04 ECO 2255

Orban Part # Description Quantity Reference Designato rs

20121.274.01 RESISTOR, METAL FILM 1/8W
1%

20122.274.01 RESISTOR,274OHM 1%1/8W 8 R200, R201, R203, R204,

8 R200, R201, R203, R204,

R205, R206, R207, R209, [de­lete]

R205, R206, R207, R209

6-26

TECHNICAL DATA ORBAN Model 2200

2200 PCA Display 31875.000.01 Rev 05, ECO 2364

Schematic Rev 01 ECO 2216A Displ r05 ECO 2364
[no difference]

2200 PCA Display 31875.000.01 Rev 06, ECO 2418

Schematic Rev 01 ECO 2216A Displ r06 ECO 2418

Orban Part # Description Quantity Reference Designato rs

20122.274.01 RESISTOR,TF,1/8W,1%,274 ohm 8 R200, R201, R203-R207, R209

27218.004.01 CABLE,FLAT,8 LONG,4
CONDUCTOR

42009.040.01 SUBASSEMBLY-CABLE-FLAT­16PIN-4

61182.000.01 SCHEMATIC, DISPLAY 2200 0

72876.000.02 CIRCUIT BOARD-DSPLY- 2200 0

1 P202
1 P203

2200 PCA Display 31875.000.01 Rev 07, ECO 2463

Schematic Rev 02 ECO 2463 Displ r07 ECO 2463

Orban Part # Description Quantity Reference Designato rs

20226.000.01 RESISTOR, NETWORK, DIL
PACKAGE,2%,100 OHM

24740.000.01 IC ULN2803LW SMD OCTAL 1 IC208 [deleted]

24741.000.01 IC UDN2982 SMD OCTAL 1 IC206 [deleted]

24851.000.01 IC,SOL20,SMT 1 IC204

24857.000.01 IC 74HC374 DLATCH SOL20 1 IC202

24908.000.01 IC,OCTAL,D TYP,FLIP/FLOP 1 IC200

24932.000.01 IC, 74FCT534 2 IC205 IC206

31876.000.06 CIRCUIT BOARD, DISPLAY 2200 1

61182.000.02 SCHEMATIC, DISPLAY 2200 0

1 RP200

2200 PCA Display 31875.000.01 Rev 08, ECO 2575

Schematic Rev 03 ECO 2575 Displ r08 ECO 2575

Orban Part # Description Quantity Reference Designato rs

24932.000.01 IC, 74FCT534 2 IC205, IC206 [deleted]

24936.000.01 IC,OCTAL D,FLIP/FLOP,3 ST 2 IC205, IC206

31876.000.06 CIRCUIT BOARD DISPLAY
BOARD 2200

61182.000.03 SCHEMATIC, DISPLAY 2200 0

1

2200 PCA Display 31875.000.01 Rev 09, ECO 2766

Schematic Rev 03 ECO 2575 Displ r09 ECO 2766

Orban Part # Description Quantity Reference Designato rs

15057.010.01 SPACER, .100" HIGH 24

OPTIMOD-FM DIGITAL TECHNICAL DATA

Schematic Rev 03 ECO 2575 Displ r09 ECO 2766

31876.000.07 CIRCUIT BOARD DISPLAY
BOARD 2200

1

Main Board

2200 PCA Main 31810.001 Rev 01, ECO 2216A, 2254, 2284

Schematic Rev
01

Orban Part # Description Quantity Reference Designators

15051.000.01 PAD,COMPONENT MOUNTING,.365 2 IC504, IC506

20020.025.01 RESISTOR,1/4W,0 ohm,(JUMPER) 4 R100, R349, R602, R603

20039.100.01 RESISTOR, METAL FILM,1/8W,1%,10

20039.221.01 RESISTOR, METAL

20039.392.01 RESISTOR, METAL

20039.511.01 RESISTOR, METAL

20039.750.01 RESISTOR, METAL

20040.110.01 RESISTOR, METAL FILM,1/8W,1%,110

20040.118.01 RESISTOR, METAL FILM,1/8W,1%,118

20040.249.01 RESISTOR, METAL FILM,1/8W,1%,249

20040.432.01 RESISTOR, METAL FILM,1/8W,1%,432

20040.511.01 RESISTOR, METAL FILM,1/8W,1%,511

20040.604.01 RESISTOR, METAL FILM,1/8W,1%,604

20040.845.01 RESISTOR, METAL FILM,1/8W,1%,845

20041.100.01 RESISTOR, METAL

20041.105.01 RESISTOR, METAL

20041.182.01 RESISTOR, METAL

20041.200.01 RESISTOR, METAL

20041.215.01 RESISTOR, METAL

20041.232.01 RESISTOR, METAL

20041.249.01 RESISTOR, METAL

20041.294.01 RESISTOR, METAL

ECO 2216A Main r01 ECO 2216A, 2254, 2284

1 R611

ohm

2 R125, R515

FILM,1/8W,1%,22.1 ohm

4 R334, R337, R343, R346

FILM,1/8W,1%,39.2 ohm

4 R348, R402, R403, R500

FILM,1/8W,1%,51.1 ohm

2 R509, R512

FILM,1/8W,1%,75.0 ohm

9 R129, R513, R514, R604,

ohm

16 R108-R123

ohm

2 R306, R322

ohm

1 R353

ohm

2 R307, R323

ohm

4 R300, R316, R516, R517

ohm

2 R303, R319

ohm

6 R406, R425, R503, R508,

FILM,1/8W,1%,1.00 kohm

2 R310, R326

FILM,1/8W,1%,1.05 kohm

2 R311, R327

FILM,1/8W,1%,1.82 kohm

1 R216

FILM,1/8W,1%,2.00 kohm

1 R608

FILM,1/8W,1%,2.15 kohm

1 R505

FILM,1/8W,1%,2.32 kohm

2 R338, R347

FILM,1/8W,1%,2.49 kohm

2 R414, R433

FILM,1/8W,1%,2.94 kohm

R600, R609, R610, R612,
R613

R511, R601

6-27

6-28

TECHNICAL DATA ORBAN Model 2200

Schematic Rev
01

20041.301.01 RESISTOR, METAL

20041.316.01 RESISTOR, METAL

20041.392.01 RESISTOR, METAL

20041.402.01 RESISTOR, METAL

20041.432.01 RESISTOR, METAL

20041.499.01 RESISTOR, METAL FILM 1/8W 1%

20041.634.01 RESISTOR, METAL

20041.665.01 RESISTOR, METAL

20042.100.01 RESISTOR, METAL

20042.133.01 RESISTOR, METAL

20042.150.01 RESISTOR, METAL

20042.200.01 RESISTOR, METAL

20042.475.01 RESISTOR, METAL

20042.499.01 RESISTOR, METAL

20042.698.01 RESISTOR, METAL

20042.750.01 RESISTOR, METAL

20043.100.01 RESISTOR, METAL FILM,1/8W,1%,100

20043.432.01 RESISTOR, METAL FILM,1/8W,1%,432

20044.100.01 RESISTOR, METAL FILM,1/8W,1%,1

20044.365.01 RESISTOR, METAL

20045.100.01 RESISTOR, METAL FILM,1/8W,1%,10

20056.154.01 RESISTOR, METAL

20058.301.01 RESISTOR, METAL

20058.357.01 RESISTOR, METAL

20058.453.01 RESISTOR, METAL

20058.464.01 RESISTOR, METAL

20058.475.01 RESISTOR, METAL

ECO 2216A Main r01 ECO 2216A, 2254, 2284

FILM,1/8W,1%,3.01 kohm
FILM,1/8W,1%,3.16 kohm
FILM,1/8W,1%,3.92 kohm
FILM,1/8W,1%,4.02 kohm
FILM,1/8W,1%,4.32 kohm

4.99 Kohm

FILM,1/8W,1%,6.34 kohm
FILM,1/8W,1%,6.65 kohm
FILM,1/8W,1%,10.0 kohm

FILM,1/8W,1%,13.3 kohm
FILM,1/8W,1%,15.0 kohm
FILM,1/8W,1%,20.0 kohm
FILM,1/8W,1%,47.5 kohm
FILM,1/8W,1%,49.9 kohm
FILM,1/8W,1%,69.8 kohm
FILM,1/8W,1%,75.0 kohm
kohm
kohm
MEG
FILM,1/8W,1%,3.65 MEG
MEG
FILM,1/8W,0.1%,15.4 ohm
FILM,1/8W,0.1%,3.01 koh
FILM,1/8W,0.1%,3.57 kohm
FILM,1/8W,0.1%,4.53 kohm
FILM,1/8W,0.1%,4.64 kohm
FILM,1/8W,0.1%,4.75 kohm

2 R350, R606
1 R607
2 R312, R328
2 R448, R453
2 R446, R451
10 R301, R302, R317, R318,

R335, R336, R344, R345,
R405, R424

2 R313, R329
2 R331, R340
15 R101, R102, R104, R105,

R107, R128, R214, R215,
R314, R315, R351, R404,
R423, R434, R443

1 R605
1 R352
5 R103, R330, R339, R507,

R510

8 R308, R309, R324, R325,

R409, R410, R427, R429

4 R407, R408, R426, R428
2 R332, R341
1 R614
37 R126, R304, R305, R320,

R321, R700-R731

1 R504
4 R333, R342, R444, R449
4 R445, R447, R450, R452
1 R506
4 R413, R420, R432, R440
2 R418, R438
1 R501
4 R416, R417, R436, R437
4 R415, R419, R435, R439
1 R502

OPTIMOD-FM DIGITAL TECHNICAL DATA

Schematic Rev
01

20059.102.01 RESISTOR, METAL

20059.133.01 RESISTOR, METAL

20080.301.01 RESISTOR, METAL FILM,1/2W,1%,301

20221.101.01 RESISTOR,NETWORK,

20511.310.01 TRIMPOTS,10K,20%,TOP ADJ 2 VR400, VR401

20512.325.01 TRIMPOTS, CERMET 15T 25K 2 VR500, VR501

20513.000.01 ADAPTER, TRIMPOT 2

21017.015.01 CAPACITOR,RAD LEADS,15PF,500V 1 C509

21017.022.01 MICA 1/2PF CD15 22PF 2 C521, C522

21017.033.01 CAPACITOR,RAD LEADS,33PF,500V 1 C518

21018.051.01 CAPACITOR,RADIAL

21018.122.01 CAPACITOR,RADIAL

21018.139.01 CAPACITOR,RADIAL

21022.162.01 CAPACITOR,RADIAL

21022.182.01 CAPACITOR,RADIAL

21022.210.01 CAPACITOR,RADIAL

21022.215.01 CAPACITOR,RADIAL

21127.010.01 CAPACITOR,AXIAL

21127.033.01 CAPACITOR,AXIAL

21127.068.01 CAPACITOR,AXIAL

21127.115.01 CAPACITOR,AXIAL

21127.168.01 CAPACITOR,AXIAL

21127.210.01 CAPACITOR,AXIAL

21131.410.01 CAPACITOR, SUFACE-MOUNT

21209.522.01 CAPACITOR,RAD,LDS,2.2UF,63V,20% 1 C102

21263.610.01 CAPACITOR,RADIAL

21263.710.01 CAPACITOR,RADIAL 1 C607

ECO 2216A Main r01 ECO 2216A, 2254, 2284

4 R412, R422, R431, R442

FILM,1/8W,0.1%,10.2 koh

4 R411, R421, R430, R441

FILM,1/8W,0.1%,13.3 kohm

1 R127

ohm

2 R106, R124

SIP,2%,100K,10PIN

3 C513, C514, C516

LEADS,51PF,500V,1%

1 C512

LEADS,220PF,500V,1%

1 C508

LEADS,390PF,500V,1%

1 C511

LEADS,620PF,500V,1%

1 C510

LEADS,820PF,500V,1%

2 C411, C417

LEADS,1000PF,500V

2 C410, C416

LEADS,1500PF,500V

2 C412, C418

LEADS,10PF,100V,5%

9 C103, C409, C415, C515,

LEADS,33PF,100V,5%

1 C517

LEADS,68PF,100V,5%

1 C604

LEADS,150PF,100V,5%

2 C523, C525

LEADS,680PF,100V,5%

4 C323, C324, C325, C326

LEADS,1NF,100V,5%

105 C11-C53, C56-C62, C66-

1206,0.1UF,50V,20%

5 C82-C84, C91, C92

LEADS,10uF,25V,10%

C519, C600, C608, C612,
C613

C71, C73-C78, C85-C90,
C100, C101, C200, C306,
C307, C311, C313, C314,
C316-C319, C321, C322,
C401, C402, C404, C405,
C413, C500, C503, C504,
C506, C524, C601, C603,
C606, C609, C611, C801,
C803, C805, C807, C809,
C811, C812, C815

6-29

6-30

TECHNICAL DATA ORBAN Model 2200

Schematic Rev
01

21303.710.01 CAPACITOR,RADIAL

21305.610.01 CAPACITOR,RADIAL

21307.510.01 CAPACITOR,RADIAL

21445.247.01 CAPACITOR,M/POLY,.0047UF,50V,5% 4 C302-C305

21445.310.01 CAPACITOR,M/POLY,.01UF,50V,5% 10 C407, C408, C800, C802,

21445.347.01 CAP M/PLYES 50V 5% .04UF 1 C602

21445.410.01 CAPACITOR,M/POLY,0.1UF,50V,5% 6 C201, C300, C301, C419,

21445.422.01 CAPACITOR,M/POLY,.22UF,50V,5% 2 C309, C310

21445.510.01 CAPACITOR,M/POLY,1.0UF,50V,5% 1 C605

22102.001.01 DIODE 1N5711TR 8 CR300-CR307

22201.400.01 DIODE REC IN4004 PRV400V 8 CR102-CR109

23402.101.01 TRANSISTOR,JFET/N 4 Q300-Q303

23406.101.01 TRANSISTOR 4 Q400-Q403

24008.202.01 IC,LINEAR,SNGL OP-AMP 3 IC502, IC503, IC505

24207.202.01 IC,LINEAR,DUAL OP AMP 4 IC302, IC311, IC403, IC406

24209.202.01 IC,LINEAR,DUAL OP AMP 6 IC301, IC310, IC402, IC405,

24643.000.01 IC,CS5389 DIP/28 600 WIDE 1 IC312

24644.000.01 IC,D/AUDIO TX CS8401A 1 IC616

24707.102.01 IC,LT1010 OBS USE 24026 2 IC504, IC506

24710.302.01 IC,SPECIAL FUNCTION,4 COMPARTR 2 IC306, IC407

24714.302.01 IC,MULTIPLYING DAC,8 BIT 2 IC401, IC404

24727.402.01 IC,SLF CONTND AUD,PREAMP 2 IC300, IC308

24728.302.01 IC,QUAD,SPST SWITCH,DIP/16 2 IC307, IC309

24733.000.01 IC,ST ASYNC S.R.C AD1890JP 2 IC603, IC615

24742.000.01 IC, AD1861N DIP/16 1 IC500

24817.000.01 IC,SRAM,32K X 8 1 IC106

24821.000.01 IC,CS4328KP 1 IC400

24822.000.01 IC,PLCC/68,SMD 1 IC100

24829.000.01 IC,TMS27C010A 10JL DIP/32 1 IC105

24847.000.01 IC,D/AUDIO INT REC CS8412CS 1 IC600

24850.000.01 IC,SO/14,SMT 5 IC201, IC314, IC606, IC614,

24851.000.01 IC,SOL20,SMT 2 IC120, IC601

24853.000.01 IC,74HC00 SIOC/14 SMD 1 IC602

24857.000.01 IC,74HC374 DLATCH SOL20 6 IC303, IC305, IC609, IC611,

24858.000.01 IC,SO/14,SMT 3 IC313, IC604, IC612

24872.000.01 IC,DIP/8 1 IC122

24896.000.01 IC,74HC153 SOIC/16 SMD 1 IC610

24897.000.01 IC,QFP/80,SMT 8 IC700-IC707

24898.000.01 IC,NM25C04M8 1 IC107

24899.000.01 IC,SO/16,SMT 4 IC101-IC104

24900.000.01 IC,HEX INVERTER,SMT 4 IC109, IC118, IC119, IC605

24901.000.01 IC,S016 HC/HCT4046A 1 IC619

24902.000.01 IC,74HC373 SMT SOL20 1 IC304

25003.000.01 IC,OPTOISOLATOR 8 IC110-IC117

26081.000.01 SWITCH,ROTARY,HORIZONTAL 1 S209

ECO 2216A Main r01 ECO 2216A, 2254, 2284
LEADS,100uF,25V,10%

1 C308

LEADS,100UF,10V,10%

1 C406

LEADS,10UF,20V,10%

10 C312, C315, C320, C400,

LEADS,1.0UF,35V,10%

C403, C414, C501, C502,
C505, C507

C804, C806, C808, C810,
C813, C814

C420, C520

IC408, IC501

IC710

IC708, IC709

OPTIMOD-FM DIGITAL TECHNICAL DATA

Schematic Rev
01

27017.025.01 CONNECTOR,RIGHT ANGLE,PC

27053.003.01 CONNECTOR,MALE,INSERT,RIGHT

27054.003.01 CONNECTOR,FEM,INSERT,RIGHT

27106.000.01 CONNECTOR,BNC,RIGHT ANGLE,PC

27147.008.01 IC,SOCKET,DIP,8 PINS,DUAL 6 IC300, IC308, IC403, IC406,

27147.020.01 IC,SOCKET,DIP,20 PIN,DUAL 2 IC613, IC618

27147.024.01 IC SOCKET 24PIN DIP 1 IC616

27147.032.01 IC,SOCKET,DIP,32 PIN,DUAL 1 IC105

27161.016.01 IC SOCKET DIP/16 3 J203, J900, J901

27165.128.01 IC, SOCKET DIP/28 2 IC312, IC400

27401.000.01 CONNECTOR,JUMPER,RECPT,BLACK 9 JA, JB, J301, J302, J303,

27406.014.01 CONNECTOR,SOCKET,STRIP,14 PIN 1 J200

27421.004.01 CONNECTOR,HEADER,DBL RW,4P,2

27421.006.01 CONNECTOR,HEADER,DBL RW,6P,2

27426.003.01 CONNECTOR,HEADER,3 PIN,SINGLE

27630.001.01 JUMPER,PC MOUNT,TEST POINT 32 TP1-TP6, TP300-TP305,

28071.000.01 OSC-XTAL-11.2896MHz-50PPM 1 Y601

28073.001.01 OSC-XTAL-8.192MHz-50PPM 1 Y602

29015.000.01 TRANSFORMER PULSE 1:1 AES/EBU 2 T600-601

29501.004.01 INDUCTOR-.007mH-OHMITE Z-50 8 L100, L400, L401, L404,

29503.000.01 INDUCTOR-1.2mH-MILLER 73F 4 L301, L303, L305, L307

29505.002.01 BEAD, FERRITE .56" ID 9

29508.210.01 FLTR-EMI SUPPRESSION-50V- 12 L300, L302, L304, L306,

29705.008.01 INDUCTOR-9.725MH-1%-SELECTED 1 L500

29705.009.01 INDUCTOR-10.41MH-1%-SELECTED 1 L502

29705.012.01 INDUCTOR-12.91MH-1%-SELEC 1 L501

31811.000.01 CIRCUIT BOARD MAIN 2200 1

44031.100.01 ASSEMBLY-PAL-PRGD-N_DIV.JED-2 1 IC618

44032.100.01 ASSEMBLY-PAL-PRGD-8B_CNTR.JED 1 IC613

61171.000.01 SCHEMATIC, MAIN 2200D 0

ECO 2216A Main r01 ECO 2216A, 2254, 2284
MNT,2 BIT

1 J101

MOUNT,25 P

3 J400, J401, J601

ANGLE

3 J300, J304, J600

ANGLE

2 J500, J501

MOUNT

IC503, IC505

J305, J306, J307, J308

6 JA, JB, J302, J303, J306,

X 2

1 J100

X 3

3 J301, J305, J308

RW

J307

TP400-TP403, TP500,
TP501, TP600-607, TP609­611, TP700, TP701, TP901

L405, L802-L804

L402, L403, L406, L407,
L600-603

6-31

2200 PCA Main 31810.001 Rev 01, ECO 2227

Schematic Rev 02 ECO 2227 Main r01 ECO 2227

Orban Part # Description Quantity Reference Designators

20040.604.01 RESISTOR, METAL

FILM,1/8W,1%,604 ohm

2 R300, R316

6-32

TECHNICAL DATA ORBAN Model 2200

Schematic Rev 02 ECO 2227 Main r01 ECO 2227

20221.101.01 RESISTOR,NET,SIP,2%,100K,10PIN 3 R106, R124, R615

21131.410.01 CAPACITOR, SUFACE-MOUNT
1206,0.1UF,50V,20%

21445.310.01 CAPACITOR,M/POLY,.01UF,50V,5% 10 C407, C408, C800, C802,

27147.124.01 IC SOCKET 24PIN DIP 1 IC616

28074.001.01 OSC-XTAL-16.384MHz-50PPM 1 Y602

31811.000.02 CIRCUIT BOARD MAIN 2200 1

105 C11-C53, C56-C62, C66-

C71, C73-C78, C85-C90,
C100, C101, C200, C306,
C307, C311, C313, C314,
C316-C319, C321, C322,
C401, C402, C404, C405,
C413, C500, C503, C504,
C506, C524, C601, C603,
C606, C609, C611, C801,
C803, C805, C807, C809,
C811, C813, C815

C804, C806, C808, C810,
C812, C814

2200 PCA Main 31810.001 Rev 01, ECO 2253

Schematic Rev 03 ECO 2253 Main r01 ECO 2253

Orban Part # Description Quantity Reference Designato rs

20040.604.01 RESISTOR, METAL

FILM,1/8W,1%,604 ohm

20512.325.01 TRIMPOTS,CERMET 15T 25K 2 VR500, VR501

21019.027.01 CAPACITOR, 1/2PF CD15 2 C521, C522

27147.124.01 IC,SOCKET,DIP,24 PIN,DUAL 1 IC616

31811.000.03 CIRCUIT BOARD MAIN 2200 1

44058.110.01 ASSEMBLY-EPROM-

PROGRAMED-V1.1

61171.000.03 SCHEMATIC, MAIN 2200D 0

4 R300, R316, R516, R517

1 IC105

2200 PCA Main 31810.001 Rev 02, ECO 2416, 2416A, 2408

Schematic Rev 04 ECO 2416, 2416A, 2491 Main r02 ECO 2416, 2416A, 2408

Orban Part # Description Quantity Reference Designato rs

16015.000.01 HEAT SINK 1

20039.221.01 RESISTOR, METAL

FILM,1/8W,1%,22.1 ohm

20040.200.01 RESISTOR, METAL

FILM,1/8W,1%,200 ohm

20041.100.01 RESISTOR, METAL

FILM,1/8W,1%,1.00 kohm

20041.402.01 RESISTOR, METAL

FILM,1/8W,1%,4.02 kohm

20512.325.01 TRIMPOTS, CERMET 20T 5K 2 VR500, VR501

21019.027.01 CAPACITOR, 27pF MICA CD15 2 C521, C522

24643.000.01 IC, CS85389 1 IC312

27161.016.01 IC,SOCKET,DIP,16 PIN 3 J203, J900, J901

2 R125
2 R508, R511
6 R406, R425, R503, R508,

R511, R601,

2 R448, R453,

OPTIMOD-FM DIGITAL TECHNICAL DATA

29505.002.01 BEAD, FERRITE, .56" ID 9

61171.000.04 SCHEMATIC, MAIN 2200D 0

2200 PCA Main 31810.001, Rev 03, ECO 2449, 2459, 2475

Schematic Rev 04 ECO 2416, 2416A, 2491 Main r03 ECO 2449, 2459, 2475

Orban Part # Description Quantity Reference Designato rs

27147.008.01 IC,SOCKET,DIP,8 PINS,DUAL 8 IC300, IC308, IC402, IC403,
IC405, IC406, IC503, IC505

2200 PCA Main 31810.001, Rev 04, ECO 2471

Schematic Rev 04 ECO 2416, 2416A, 2491 Main r04 ECO 2471

Orban Part # Description Quantity Reference Designato rs

31811.000.04 CIRCUIT BOARD MAIN 2200 1

2200 PCA Main 31810.001, Rev 05, ECO 2491

Schematic Rev 04 ECO 2416, 2416A, 2491 Main r05 ECO 2491

Orban Part # Description Quantity Reference Designato rs

24933.000.01 IC, CS5390KP 20 BIT 1 IC312

6-33

2200 PCA Main 31810.001, Rev 06, ECO 2492

Schematic Rev 04 ECO 2416, 2416A, 2491 Main r06 ECO 2492

Orban Part # Description Quantity Reference Designato rs

31811.000.05 CIRCUIT BOARD MAIN 2200 1

2200 PCA Main 31810.001, Rev 07, ECO 2531

Schematic Rev 04 ECO 2416, 2416A, 2491 Main r07 ECO 2531
[no difference]

2200 PCA Main 31810.001 Rev 08, ECO 2552

Schematic Rev 05 ECO 2552 Main r08 ECO 2552

Orban Part # Description Quantity Reference Designators

20020.025.01 RESISTOR,1/4W,0 ohm,(JUMPER) 6 R100, R131, R349, R515,

R602, R603

20039.221.01 RESISTOR, METAL

FILM,1/8W,1%,22.1 ohm

20041.100.01 RESISTOR, METAL

FILM,1/8W,1%,1.00 kohm

1 R125
4 R406, R425, R503, R601

6-34

TECHNICAL DATA ORBAN Model 2200

Schematic Rev 05 ECO 2552 Main r08 ECO 2552

20041.402.01 RESISTOR, METAL
FILM,1/8W,1%,4.02 kohm

20042.100.01 RESISTOR, METAL
FILM,1/8W,1%,10.0 kohm

20042.200.01 RESISTOR, METAL
FILM,1/8W,1%,20.0 kohm

20512.250.01 TRIMPOTS, CERMET 20T 5K 2 VR500, VR501

21018.012.01 CAPACITOR,MIC 500V ,1% 120PF 2 C521, C522

21131.410.01 CAPACITOR, SUFACE-MOUNT
1206,0.1UF,50V,20%

21445.310.01 CAPACITOR,M/POLY,.01UF,50V,5% 10 C407, C408, C800, C802,

61171.000.05 SCHEMATIC, MAIN 2200D 0

4 R448, R453, R507, R510
16 R101, R102, R104, R105,

R107, R128, R130, R214,
R215, R314, R315, R351,
R404, R423, R434, R443

3 R103, R330, R339

105 C11-C53, C56-C62, C66-

C71, C73-C78, C85-C90,
C100, C101, C200, C306,
C307, C311, C313, C314,
C316-C319, C321, C322,
C401, C402, C404, C405,
C413, C500, C503, C504,
C506, C524, C601, C603,
C606, C609, C611, C801,
C803, C805, C807, C809,
C811, C812, C815

C804, C806, C808, C810,
C813, C814

2200 PCA Main 31810.001 Rev 09, ECO 2727

Schematic Rev 05 ECO 2552 Main r09 ECO 2727

Orban Part # Description Quantity Reference Designato rs

27171.028.01 IC, SOCKET 28P PLCC SMT 2 IC603, IC615

2200 PCA Main 31810.001 Rev 10, ECO 2772

Schematic Rev 05 ECO 2552 Main r10 ECO 2772

Orban Part # Description Quantity Reference Designato rs

27165.128.01 IC, SOCKET DIP/28 2 IC312, IC400 [deleted]

2200 PCA Main 31810.001 Rev 11, ECO 2786

Schematic Rev 06 ECO 2786 Main r11 ECO 2786

Orban Part # Description Quan tity Reference Designators

20020.025.01 RESISTOR,1/4W,0

ohm,(JUMPER)

20080.300.01 RESISTOR, METAL

FILM,1/2W,1%,300 ohm

20512.250.01 TRIMPOTS,5K,20%,SIDE ADJ 2 VR500, VR501

21018.012.01 CAPACITOR,RADIAL

LEADS,120PF,500V,1%

21127.010.01 CAPACITOR,AXIAL 4 C412, C418, C421, C422

6 R100, R131, R349, R401, R515,

R602, R603

1 R127

2 C521, C522

OPTIMOD-FM DIGITAL TECHNICAL DATA

Schematic Rev 06 ECO 2786 Main r11 ECO 2786

LEADS,10PF,100V,5%

21445.347.01 CAPACITOR,METALIZED
POLYESTER,.047UF,50V,5%

27630.001.01 JUMPER,PC MOUNT,TEST
POINT

31811.000.06 CIRCUIT BOARD MAIN 2200 1

61171.000.06 SCHEMATIC, MAIN 2200D 0

1 C602
32 TP1-TP6, TP300-TP305,

TP400-TP403, TP500, TP501,
TP600-607, TP609-611, TP700,
TP701, TP901

2200 PCA Main 31810.001 Rev 12, ECO 2869

Schematic Rev 07 ECO 2869 Main r12 ECO 2869

Orban Part # Description Quantity Reference Designato rs

20041.182.01 RESISTOR, METAL

FILM,1/8W,1%,1.82 kohm

20041.665.01 RESISTOR, METAL

FILM,1/8W,1%,6.65 kohm

32140.000 CIRCUIT BOARD ASSEMBLY

A/D ADAPT 5390-5394

61171.000.07 SCHEMATIC, MAIN 2200D 0

4 R311, R327, R331, R340
2 R332, R341
1 IC312

6-35

2200 PCA Main 31810.001 Rev 13, ECO 2878

Schematic Rev 08 ECO 2878 Main r13 ECO 2878

Orban Part # Description Quantity Reference Designato rs

24026.000.01 IC, BUF634T TO220 2 IC504, IC506

61171.000.08 SCHEMATIC, MAIN 2200D 0

2200 PCA Main 31810.001 Rev 14, ECO 2934

Schematic Rev 09 ECO 2934 Main r14 ECO 2934

Orban Part # Description Quantity Reference Designato rs

20040.174.01 RESISTOR, METAL FILM 1/8W

174ohm

24030.000.01 IC, OPAMP RPL2017 DIP8 2 IC300 IC308

44058.110.01 ASSEMBLY-EPROM-

PROGRAMED-V1.1

61171.000.09 SCHEMATIC, MAIN 2200D 0

2 R303 R319

1 IC105

2200 PCA Main 31810.001 Rev 15, ECO 2995

Schematic Rev 10 ECO 2995 Main r15 ECO 2995

Orban Part # Description Quantity Reference Designators

20039.100.01 RESISTOR, METAL

FILM,1/8W,1%,10 ohm

1 R611 [deleted]

6-36

TECHNICAL DATA ORBAN Model 2200

Schematic Rev 10 ECO 2995 Main r15 ECO 2995

20041.215.01 RESISTOR, METAL
FILM,1/8W,1%,2.15 kohm

20041.301.01 RESISTOR, METAL
FILM,1/8W,1%,3.01 kohm

20041.316.01 RESISTOR, METAL
FILM,1/8W,1%,3.16 kohm

20042.133.01 RESISTOR, METAL
FILM,1/8W,1%,13.3 kohm

20042.750.01 RESISTOR, METAL
FILM,1/8W,1%,75.0 kohm

21127.115.01 CAPACITOR,AXIAL
LEADS,150PF,100V,5%

21263.710.01 CAPACITOR,RADIAL
LEADS,100uF,25V,10%

21131.410.01 CAPACITOR, SUFACE-MOUNT
1206,0.1UF,50V,20%

21445.510.01 CAPACITOR,M/POLY,1.0UF,50V,5% 1 C605

24901.000.01 IC,S016 HC/HCT4046A 1 IC619 [deleted]

27147.020.01 IC,SOCKET,DIP,20 PIN,DUAL 1 IC613

32220.000 PC ASY, 4046 CLOCK ADAPTER 1

61171.000.10 SCHEMATIC, MAIN 2200D 0

62220.000.01 SCHEMATIC, 4046 CLOCK
ADAPTER

1 R608 [deleted]
1 R350
1 R607 [deleted]
1 R605 [deleted]
1 R614 [deleted]
1 C604 [deleted]
1 C607 [deleted]
104 C11-C53, C56-C62, C66-

C71, C73-C78, C85-C90,
C100, C101, C200, C306,
C307, C311, C313, C314,
C316-C319, C321, C322,
C401, C402, C404, C405,
C413, C500, C503, C504,
C506, C524, C601, C603,
C609, C611, C801, C803,
C805, C807, C809, C811,
C812, C815

0

2200 PCA Main 31810.001 Rev 16, ECO 3041

Schematic Rev 10 ECO 2995 Main r16 ECO 3041

Orban Part # Description Quantity Reference Designators

24821.000.01 IC CS4328KP 1 IC400 [deleted]

32225.000 CIRCUIT BOARD ASSEMBLY

ADAPTER, CS4328

1

Power Supply

2200 Power Supply 31865.000 Rev 01

Schematic Rev 01 ECO 2216 Power r01 31865.000

Item Description Quantity Reference Designators

10012.405.01 SCREW,MS,SEM,PH,4-40 X 5/16 2

10012.406.01 SCREW,MS,SEM,P/P,4-40 X 3/8 2

12001.408.01 NUT,HEX,STL,C2,4-40 X 1/4 2

15023.001.01 INSULATOR,SILICONE TO-3 1 IC5

OPTIMOD-FM DIGITAL TECHNICAL DATA

Schematic Rev 01 ECO 2216 Power r01 31865.000

15025.000.01 TRANSISTOR,MTG,KIT TO 220 2 IC1, IC2

16013.000.01 HEATSINK,CLIP-ON TO 220 3 IC3, IC4, Q1

20021.920.01 RESISTOR,CF,1/2W,5%,2.0 ohm 4 R3-R6

20039.221.01 MF 1/8W 1% 22.1 OHM 1 R2

20042.100.01 RESISTOR, METAL
FILM,1/8W,1%,10.0 kohm

21129.410.01 CAPACITOR,AXIAL
LEADS,0.1uF,50V,20%

21206.747.01 CAPACITOR,RADIAL
LEADS,470UF,25V,20%

21255.000.01 CAPACITOR,SNP
IN,6800uF,16V,20%

21256.000.01 CAPACITOR,RADIAL
LEAD,1000uF,35V,20%

21263.710.01 CAPACITOR,RADIAL
LEADS,100uF,25V,10%

22004.056.01 ZENER-DIODE-1W-5%-5.6V-1N 3 CR10, CR12, CR16

22015.000.01 DIODE,SCHOTTKY
RECTIFIER,SBL

22101.000.01 DIODE,SIGNAL 1 CR20

22201.400.01 DIODE REC IN4004 PRV400V 13 CR1-CR9, CR11, CR17,

22500.271.01 ZENER,TRANSISTOR,VARISTOR 2 V1, V2

1 R7
11 C3, C4, C, 7-C10, C12, C13,

C16, C17, C20

1 C18
1 C15
3 C1, C2, C19
4 C5, C6, C11, C14

3 CR13, CR14, CR15

CR18, CR19

6-37

23202.101.01 TRANSISTOR 1 Q2

23606.201.01 TRANSISTOR,PWR,NPN 1 Q1

24303.901.01 IC,LINEAR,DC REGULATOR,15V
NEG

24304.901.01 IC,REG 1 IC1

24307.901.01 IC,LINEAR,DC REGULATOR,5V
POS

24308.901.01 IC,LINEAR,DC REGULATOR,5V
NEG

24321.000.01 VOLTAGE REGULATOR 1 IC5

26143.000.01 SWITCH,SLIDE,VOLT,115/230 1 S1

26146.000.01 SWITCH,SLIDE,SPDT,VERTICAL
MOUNT

27406.004.01 CONNECTOR,SOCKET,STRIP,4
PIN

27421.004.01 CONNECTOR,HEADER,DBL
RW,4P,2 X 2

27421.010.01 CONNECTOR,HEADER,DBL
RW,23",2 X 5

27621.006.01 LUG SOLDER #6 1

27630.001.01 JUMPER,PC MOUNT,TEST
POINT

27711.206.01 TERM,CRIMP,RING,INS,6R 1

28004.150.01 FUSE,3AG,SLOBLO,1/2 AMP 1 F1

28012.000.01 FILTER, LINE 3A PC MOUNT 1 L1

28112.001.01 FUSEHOLDER DOM PC MOUNT 1 F1

31866.000.01 CIRCUIT BOARD POWER
SUPPLY 2200

42028.040.01 ASSEMBLY FLAT CABLE 16 PIN
4"

50281.000.01 HEATSINK-2200 1

55033.000.02 TRANSFORMER PWR 2200 1 T1

1 IC2

1 IC3
1 IC4

1 S2
1 J202
1 J201
1 J1

8 TP1-TP8

1
2 P900, P901

6-38

TECHNICAL DATA ORBAN Model 2200

Schematic Rev 01 ECO 2216 Power r01 31865.000

61181.000.01 SCHEMATIC, POWER SUPPLY
2200/6200/

0

2200 Power Supply 31865.000 Rev 02

Schematic Rev 02 ECO 2235 Power r02 31865.000

Item Description Quantity Reference Designators

27621.006.01 LUG SOLDER #6 1 [deleted]

31866.000.02 CIRCUIT BOARD POWER

SUPPLY 2200

42009.040.01 SUBASSEMBLY-CABLE-FLAT-

16PIN-4

42028.040.01 ASSEMBLY FLAT CABLE 16

PIN 4"

61181.000.02 SCHEMATIC, POWER

SUPPLY 2200/6200/

1
2
2 P900, P901 [deleted]
0

2200 Power Supply 31865.000/32045.000 Rev 01

Schematic Rev 01 ECO 2636 Power r01 31865.000/32045.000

Item Description Quantity Reference Designators

10012.405.01 SCREW,MS,SEM,PH,4-40 X

5/16

10012.406.01 SCREW,MS,SEM,P/P,4-40 X

3/8

12001.408.01 NUT,HEX,STL,C2,4-40 X 1/4 2 H5, H6

15023.001.01 INSULATOR,SILICONE TO-3 1 H7

15025.000.01 TRANSISTOR,MTG,KIT TO

220

16013.000.01 HEATSINK,CLIP-ON TO 220 3 H10, H11, H12

20020.025.01 RESISTOR,1/4 ZERO OHM 1 R2

20039.221.01 MF 1/8W 1% 22.1 OHM 1 R2 [deleted]

20140.120.01 RESISTOR,MO 1W 5%

120OHM

21129.410.01 CAPACITOR,AXIAL

LEADS,0.1uF,50V,20%

22003.068.01 ZENER 1W 10% 6.8V 1N4736 2 CR21, CR22

27060.000.01 CONNECTOR, MOLEX

VERTICAL HEAD

27493.000.01 CONNECTOR,VERT HDR 2X3

6POS

27630.001.01 JUMPER,PC MOUNT,TEST

POINT

27711.206.01 TERM,CRIMP,RING,INS,6R 1 H13

28112.001.01 FUSEHOLDER DOM PC

MOUNT

31866.000.02 CIRCUIT BOARD POWER

SUPPLY 2200

32046.000.01 CIRCUIT BOARD POWER

SUPPLY 2200

42009.040.01 SUBASSEMBLY-CABLE-FLAT-

16PIN-4"

2 H1, H2
2 H3, H4

2 H8, H9

8 R8-R15
11 C3, C4, C7-C10, C12, C13,

C16, C17, C20
1 J4
1 J6
8 TP1-TP8 [deleted]

1 F1A F1B
1 [deleted]
1 H15
1 P901

OPTIMOD-FM DIGITAL TECHNICAL DATA

Schematic Rev 01 ECO 2636 Power r01 31865.000/32045.000

42009.085.01 SUBASSEMBLY-CABLE-FLAT­16PIN-8.5"

50281.000.01 HEATSINK-2200 1 H14

55033.000.02 TRANSFORMER PWR 2200 1 T1 [deleted]

61181.000.02 SCHEMATIC, POWER
SUPPLY 2200/6200/

62045.000.01 SCHEMATIC, POWER
SUPPLY 2200/6200/

1 P900

0 [deleted]
0

2200 Power Supply 31865.000/32045.000 Rev 02

Schematic Rev 02 ECO 2691 Power r02 31865.000/32045.000

Item Description Quantity Reference Designators

27630.001.01 JUMPER, PC MOUNT TEST

POINT

32046.000.02 CIRCUIT BOARD POWER

SUPPLY 2200

62045.000.02 SCHEMATIC, POWER

SUPPLY 2200/6200/

2 TP3, TP8
1 H15
0

6-39

2200 Power Supply 31865.000/32045.000 Rev 05

Schematic Rev 03 ECO 2748 Power r05 31865.000/32045.000

Item Description Quantity Reference Designators

22003.068.01 ZENER 1W 10% 6.8V 1N4736 2 CR21, CR22 [deleted]

22083.033.01 DIODE, VOLTAGE

SUPPRESSOR, 33 VOLT

27630.001.01 JUMPER, PC MOUNT TEST

POINT

28012.000.01 FILTER, LINE 3A PC MOUNT 1 L1 [deleted]

28112.003.01 KNOB FUSE DOM GRY

FOR281

28112.005.01 BODY FUSEHOLDER PC

MOUNT

29262.000.01 LINE FLTR PC MOUNT 1A 1

32046.000.04 CIRCUIT BOARD POWER

SUPPLY 2200

62045.000.03 SCHEMATIC, POWER

SUPPLY 2200/6200/

2
1 TP8

1 F1B
1 F1A

1 H15
0

2200 Power Supply 31865.000/32045.000 Rev 07

Schematic Rev 04 ECO 3047 Power r07 31865.000/32045.000

Item Description Quantity Reference Designators

20040.332.01 RESISTOR, METAL

FILM,1/8W,1%,332 ohm

23605.501.01 TRANSISTOR,PWR,PNP 1 Q3

24321.000.01 VOLTAGE REGULATOR 1 IC5 [deleted]

24332.000.01 IC VREGLDO LP2950-5.0 1 IC6

1 R16

6-40

TECHNICAL DATA ORBAN Model 2200

Schematic Rev 04 ECO 3047 Power r07 31865.000/32045.000

32046.000.05 CIRCUIT BOARD POWER
SUPPLY 2200

62045.000.04 SCHEMATIC, POWER
SUPPLY 2200/6200/

1
0

Schematics, Assembly Drawings

The following drawings are included in this manual. Complete drawings are included for
the first version of the product. For later versions, drawings are included only if a given
drawing has changed compared to the previously shown version of that drawing.

Page Function Description Drawing

6-44
6-45
6-46
6-47
6-48
6-49
6-50
6-51
6-52
6-53
6-54
6-55
6-56
6-57
6-58
6-59
6-60
6-61
6-62
6-63
6-64
6-65
6-66
6-67
6-68
6-69
6-70
6-71
6-72
6-73
6-74

Display Board ver 1 Parts Locator
Display Board ver 2 Parts Locator
Display Board ver 3 Parts Locator
Display Board ver 4 Parts Locator
Display Board ver 1 Schematic Diagram
Display Board ver 2 Schematic Diagram
Display Board ver 3 Schematic Diagram
Main Board ver 1 Entire assembly Parts Locator
Main Board ver 1 Circuit board Parts Locator
Main Board ver 2 Circuit board Parts Locator
Main Board ver 3 Circuit board Parts Locator
Main Board ver 4 Circuit board Parts Locator
Main Board ver 1 CPU/Remote Schematic Diagram
Main Board ver 1 Display Schematic Diagram
Main Board ver 1 Analog input Schematic Diagram
Main Board ver 1 Analog output Schematic Diagram
Main Board ver 1 Composite output Schematic Diagram
Main Board ver 1 Digital I/O Schematic Diagram
Main Board ver 1 DSP 1 Schematic Diagram
Main Board ver 1 DSP 2 Schematic Diagram
Main Board ver 1 Power distribution Schematic Diagram
Main Board ver 2 Digital I/O Schematic Diagram
Main Board ver 3 Composite output Schematic Diagram
Main Board ver 4 CPU/Remote Schematic Diagram
Main Board ver 4 Analog input Schematic Diagram
Main Board ver 4 Composite output Schematic Diagram
Main Board ver 5 DSP 2 Schematic Diagram
Main Board ver 6 Analog output Schematic Diagram
Main Board ver 7 Analog input Schematic Diagram
Main Board ver 8 Composite output Schematic Diagram
Main Board ver 9 Analog input Schematic Diagram

OPTIMOD-FM DIGITAL TECHNICAL DATA

Page Function Description Drawing

6-41

6-75
6-76
6-77
6-78
6-79
6-80
6-81
6-82
6-83
6-84
6-85

Main Board ver 10 Digital I/O Schematic Diagram
Clock Adapter Board [there is only one version] Parts Locator
Clock Adapter Board [there is only one version] Schematic Diagram
Power Supply ver 1 Parts Locator
Power Supply ver 2 Parts Locator
Power Supply ver 3 Parts Locator
Power Supply ver 4 Parts Locator
Power Supply ver 1 Schematic Diagram
Power Supply ver 2 Schematic Diagram
Power Supply ver 3 Schematic Diagram
Power Supply ver 4 Schematic Diagram

6-42

TECHNICAL DATA ORBAN Model 2200

NOTES:

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-43

Vendor Codes

AB Rockwell Allen-Bradley

625 Liberty Ave
Pittsburgh, PA 15222-3123

AD Analog Devices, Inc.

2105 S Bascom Ave
Suite 325
Campbell, CA
95008

BEK Beckman Industrial Corporation

4141 Palm Street
Fullerton, CA 92635-1025

BRN Bourns, Inc

2533 N 1500 W
Ogden UT 84404

BUS Bussmann Division

Cooper Industries
PO Box 14460
St. Louis, MO 63178

CD Corning

CEN Mepcopal/Centralab

See Mepcopal

CSC Crystal Semiconductor Corp.

50 Airport Parkway
San Jose, CA 95110

CW CW Industries

130 James Way
Southampton, PA 18966

DAL Dale

1122 23rd St
Columbus, NE 68601-3647

DEL Delta Products Corp

3225 Laurel View Ct.
Fremont, CA 94538

DEN Densitron Corporation
P.O. BOX 11189
Torrance, CA 90510-1189

EXR Exar Corporation

2222 Qume Dr.
PO Box 49007
San Jose, CA 95161-9007

FR Fair-Rite

FSC Fairchild Camera & Instr. Corp.

See National Semiconductor

GI General Instruments

Optoelectronics Division
See Quality Technologies

GS General Silicones Co. USA Inc.

650 W Duarte Rd, Ste 401
Arcadia, CA 91007

HP Hewlett-Packard Co.

321 E Evelyn Ave
Mountain View, CA 94039

KEM KEMET Electronics Corporation

Post Office Box 5928
Greenville, South Carolina 29606

LFE Littlefuse

A Subsidiary of Tracor, Inc.
800 E. Northwest Hwy
Des Plaines, IL 60016

LT Linear Technology Corp

1630 McCarthy Blvd.
Milpitas, CA 95035

LUM Lumex Opto/Components Inc.

292 E. Hellen Road
Palatine, IL 60067

MAT Matsushita Electric Corp

of America
One Panasonic Way
Secaucus, NJ 07094

MIL J.W. Miller Division

Bell Industries
306 E. Alondra
Gardena, CA 90247

MOT Motorola Semiconductor

5005 E McDowell Rd
Phoenix, AZ 85008

MUR Murate Erie North America

2200 Lake Park Drive
Smyrna, GA 30080

NAT National Semiconductor Corp.

2900 Semiconductor Drive
PO Box 61659
Santa Clara, CA 95051

NEU Neutrik USA Inc.

195 Lehigh Ave
Lakewood, NJ 08701-4527

NIC Nichicon

927 East State Parkway
Schaumburg, IL 60713

NOB Noble USA Inc.

5450 Meadowbrook Industri
Rolling Meadows, IL
60008-3800

OHM Ohmite Manufacturing Company

PO Box 49150
Chicago, IL 60678

ORB Orban, Inc.

1525 Alvarado Street
San Leandro, CA 94577

PHI Phillips Components – Signetics

See Signetics

PAN Panasonic Industrial Company

Two Panasonic Way
7E-2T
Secaucus, NJ 07094

QT Quality Technologies, Inc.

610 North Mary Ave.
Sunnyvale, CA 94086

ROH Rohm Electronics

3034 Owens Dr.
Antioch, TENN 37013

SIE Siemens Components Inc.

Heimann Systems Div.
186 Wood Avenue South
Iselin, NJ 08830

SIG Signetics - Philips Components

North American Phillips Corp.
811 E. Arques
Sunnyvale, CA 94088

SPR Sprague Magnetics, Inc

15720 Stagg Street
Van Nuys, CA 91406

SPE Spectrol

SW Switchcraft

A Raytheon Company

5555 N. Elation Avenue
Chicago, IL 60630

TAI Taiga America, Inc.

700 Frontier Way
Bensenville, IL 60106

TAT Taitron

TI Texas Instruments, Inc.

PO Box 655012
Dallas, TX 75265

TOS Toshiba America, Inc.

9740 Irvine Blvd.
Irvine, CA 92718

TRW TRW Electronics Components

Connector Division
1501 Morse Avenue
Elk Grove Village, IL 60007

XI Xicor

WIM Wima Division

2269 Saw Mill Rd
Building 4C
PO Box 217
Elmsford, NY 10533

ZI ZILOG Inc.

210 Hacienda Ave.
Campbell, CA 95008

6-44

TECHNICAL DATA Orban Model 2200

Display Board version 1
Drawing 31875.000.01
Reference schematic 61182.000.01

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-45

Display Board version 2
Drawing 31875.000.01
Reference schematic 61182.000.01

6-46

TECHNICAL DATA Orban Model 2200

Display Board version 3
Drawing 31875.000.08
Reference schematic 61182.000.03

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-47

Display Board version 4
Drawing 31875.000.09
reference schematic 61182.000.03

6-48

TECHNICAL DATA Orban Model 2200

Display Board version 1
schematic 61182-000-01

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-49

Display Board version 2
schematic 61182-000-02

6-50

TECHNICAL DATA Orban Model 2200

Display Board version 3
schematic 61182-000-03

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-51

Main Board version 1 (1 of 2)
reference schematic 61171-000-8

6-52

TECHNICAL DATA Orban Model 2200

Main Board version 1 (detail: 2 of 2)
reference schematic 61171-000-8

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-53

Main Board version 2
reference schematic 61171-000-

6-54

TECHNICAL DATA Orban Model 2200

Main Board version 3
reference schematic 61171-000-

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-55

Main Board version 4
reference schematic 61171-000-

6-56

TECHNICAL DATA Orban Model 2200

Main Board: CPU/Remote version 1
schematic 61171.000.01
(sheet 1 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-57

Main Board: Display version 1
schematic 61171.000.01
(sheet 2 of 9)

6-58

TECHNICAL DATA Orban Model 2200

Main Board: Analog Input version 1
schematic 61171.000.01
(sheet 3 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-59

Main Board: Analog Output version 1
schematic 61171.000.01
(sheet 4 of 9)

6-60

TECHNICAL DATA Orban Model 2200

Main Board: Composite Output version 1
schematic 61171.000.01
(sheet 5 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-61

Main Board: Digital I/O version 1
schematic 61171.000.01
(sheet 6 of 9)

6-62

TECHNICAL DATA Orban Model 2200

Main Board: DSP 1 version 1
schematic 61171.000.01
(sheet 7 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-63

Main Board: DSP 2 version 1
schematic 61171.000.01
(sheet 8 of 9)

6-64

TECHNICAL DATA Orban Model 2200

Main Board: Power Distribution version 1
schematic 61171.000.01
(sheet 9 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-65

Main Board: Digital I/O version 2
schematic 61171.000.0x (see tabulation)
(sheet 6 of 9)

6-66

TECHNICAL DATA Orban Model 2200

Main Board: Composite Ouput version 3
schematic 61171.000.0x (see tabulation)
(sheet 5 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-67

Main Board: CPU/Remote version 4
schematic 61171.000.0x (see tabulation)
(sheet 1 of 9)

6-68

TECHNICAL DATA Orban Model 2200

Main Board: Analog Input version 4
schematic 61171.000.0x (see tabulation)
(sheet 3 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-69

Main Board: Composite Output version 4
schematic 61171.000.0x (see tabulation)
(sheet 5 of 9)

6-70

TECHNICAL DATA Orban Model 2200

Main Board: DSP 2 version 5
schematic 61171.000.0x (see tabulation)
(sheet 8 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-71

Main Board: Analog Output version 6
schematic 61171.000.0x (see tabulation)
(sheet 4 of 9)

6-72

TECHNICAL DATA Orban Model 2200

Main Board: Analog Input version 7
schematic 61171.000.0x (see tabulation)
(sheet 3 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-73

Main Board: Composite Output version 8
schematic 61171.000.0x (see tabulation)
(sheet 5 of 9)

6-74

TECHNICAL DATA Orban Model 2200

Main Board: Analog Input version 9
schematic 61171.000.0x (see tabulation)
(sheet 3 of 9)

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-75

Main Board: Digital I/O version 10
schematic 61171.000.0x (see tabulation)
(sheet 6 of 9)

6-76

TECHNICAL DATA Orban Model 2200

Clock Generator version 1
Drawing 32220.000.01
Reference schematic 62220.000.01

OPTIMOD-FM DIGITAL TECHNICAL DATA

JP-A

1 2

9 10

JUMPERS

+5

6-77

+5

C1
CAP_.01UF

D

1

+5

ICLK

GND

3

D

1
2

N/C

2

CLK

VDD

OE

X2

S1

4S06

U1

5

7
8

ICS501

X3

5

3

3 4

N/C
N/C

+5

U3

4

AHCT86

C3

CAP_.01UF

D

C2
CAP_.01UF

D

1

ICLK

GND

3

D

4
1

3
2

2

N/C

CLK

VDD

OE

X2

1 PRE
1 CLR

1 CLK
1D

4S06

U2

S1

ICS501

14

7

5
7

8

X3/X2

VCC

1Q
1Q

GND

11 12

N/C

N/C

U4A

5
6

AHCT74

JP-C

D

N/C

C4

CAP_.01UF

JP-B

5 6

7 8

14 13

10

2PRE

13

2CLR

11

2CLK

12

2D

+5

2Q
2Q

U4B

9
8

AHCT74

+5

P618
1
2
3
4
5
6
7
8
9

10 11

20PIN-ADAPTER

D D

INPUT CLOC K 2.048M 6.144M

PLL OUT 1 6.144M 4.096M
PLL OUT 2 18.432M 18.432M

20
19
18
17
16
15
14
13
12

2200
9200

12

13

6200

12

14

13

14

D

D

2.048M X3 = 6.144M

6.144M X3 = 18.432M

Clock Generator version 1
Schematic 62220.000.01

6-78

TECHNICAL DATA Orban Model 2200

Power Supply version 1
Drawing 31865.000.01
Reference schematic 61181.000.01

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-79

Power Supply version 2
Drawing 31865-[see tab]-02
Reference schematic 61181.000.02

6-80

TECHNICAL DATA Orban Model 2200

Power Supply version 3
Drawing 32045.000.02
Reference schematic 60245.000.03

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-81

Power Supply version 4
Drawing 32045.000.05
Reference schematic 60245.000.04

6-82

TECHNICAL DATA Orban Model 2200

Power Supply version 1
Schematic 61181.000.01

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-83

Power Supply version 2
Schematic 61181.000.02

6-84

R2

0W

AGND

L1

Line Filter Assembly

213

1

115v/230v

4

DPDT
S1

IC1

Mounting

Kit

15025.000.01

Ref: PCB

31866.000.05

TECHNICAL DATA Orban Model 2200

+15V

Gnd Lift

1

2

SPDT

S2

0.1F, 50v

C20

1 2

20%

3

N/C

Chassis_Gnd

Chassis Ground Pigtail, 3" long

(Lug w/Green AWG 18)

H13

4

Chassis_Gnd

Cap

F1b

F1a

F1

Fuse

Fuse Holder

1/2 A, Slow Blow Blow

2

3

1 2

5

V1

6

4-40x.3125

IC2

Mounting

Kit

15025.000.01

Power Transformer

Toroid Assy

(off board)

WHITE

BLUE

BROWN

BLACK

4 2 3 1 1 4 2 5 3 6

J4

423

1

1 2

V2

M is c . H ard w are A c c e s s o rie s

Heatsink

50281.000.01

4-40x.375

4-40x.375

IC5

TO3 Insulator

4/40 4/40

RED/WHITE

J6

ORANGE/WHITE

RED

YELLOW/WHITE

ORANGE

12345

YELLOW

AGND

4-40x.3125

6.8v Zener1N4736

21

CR21

21

R8

12

10%

100F, 25v

100F, 25v 10%

1/2 w.

20%0.1F, 50v

2 1

2 1

R9

R10

R11

R12

R13

R15

1N4736

R5

CR7

CR8

120 Ω

120 Ω

120 Ω

120 Ω

1N4004

1N4004

1 2

120 Ω

120 Ω

120 Ω

120 Ω

CR22

5%

2.0 W

5%

5%

5%

5%

6.8v Zener

C18

TIP120

1/2 w.

16013.000.01

21

21

21

5%

21

5%

21

5%

21

5%R14

21

10%

12

470F, 25v

CR9

21

1N4004

+5v Reg

MC78M05CT

1

2

IC3

12

20%

C9

0.1F, 50v

AGND

CR11

2 1

1N4004

-5v Reg

MC79M05CT

2

1

IC4

20%

12

C12

0.1F, 50v

AGND

CR16

2 1

1N4734A

5.6v Zener

3

3

12

C10

12

C13

20%0.1F, 50v

16013.000.01

20%0.1F, 50v

Heatsink

Heatsink

H11

H12

16013.000.01

Heatsink

Q1

3 2

R6

H10

1

LED_Pulse

R7

5%2.0 W

1%10.0K

1/2 w.

TP10

1-2C

PlusRAW

0.1F, 50v

CR4

CR3

2 1

2 1

1N4004

1N4004

12

20%

1000F, 35v

CR1

CR2

2 1

1N4004

1N4004

2 1

12

20%

1000F, 35v

MinusRAW

1-2C

6

TP11

0.1F, 50v

CR13

1

2

3

SBL1630CT

CR14

1

3

CR15

3

+9v

2

1

SBL1630CT

2

12

C15

SBL1630CT

DGND

CR18

2 1

1N4004

CR17

2 1

1N4004

TP8

+9vB

21

C19

20%

1000F, 35v

DGND

CR5

21

1N4004

+15v Reg

MC78M15CT

1

IC1

2

12

C3

20%

AGND

C1

Plus15V

3

12

20%

C4

0.1F, 50v

12

C5

3

12

C8

CR19

1N4004

+5v Reg

LT1086/CK-5

1

2

20%0.1F, 50v

LCD Backlight

J201

1 2

3 4

5%

1/2 w.

2.0 W

12

C6

Minus15V

20%

0.1F, 50v

21

3

IC5

C17

N/CN/C

5%

R4

2.0 W

CR6

C2

2 1

1N4004

-15v Reg

MC79M15CT

2

1

21

IC2

C7

20%

AGND

TP7

20%

21

C16

6800F, 16v

R3

2N4400

Q2

2

Plus15V

TP1

+5VA

Plus5VA

TP2

12

C11

10%

CR10

2 1

100F, 25v

12

C14

100F, 25v

Minus5VA

Minus15V

Power

DGND

1N4734A

5.6v Zener

1-6D

TP3

AGND

10%

CR12

2 1

1N4734A

5.6v Zener

1-6C

TP5

—5VA

TP4

-15V

+5VD

TP6

+15V

TP9

DGND

+15V

-15V

+5VD

DGND

+5VA

—5VA

+5VA

Chassis_Gnd

AGND

PlusRAW

MinusRAW

Plus15V

Minus15V

Power

DGND

Plus5VA

Minus5VA

P900

1 2
3 4
5 6
7 8

9 10

11 12
13 14
15 16

8.5" Flat Cable

—5VA

N/C (Key)

-15V

1
2
3
4
5
6
7
8
9

10

J1

Testing Access

+5VD

Power

1

2

3

4

J202

DGND

Display Supply

+5VD

Digital SupplyAnalog Supply

P901

Power

1 2
3 4
5 6
7 8

9 10
11 12
13 14
15 16

4" Flat Cable

DGND

LED_Pulse

+9vB

1 3

CR20

2 1

1N4148

Power Supply version 3

DGND

schematic 62045.000.03

OPTIMOD-FM DIGITAL TECHNICAL DATA

6-85

AGND

Line Filter Assembly

213

115v/230v

DPDT
S1

15025.000.01

SPDT

S2

R2

1 2

0W

0.1F, 50v

Chassis Ground Pigtail, 3" long

(Lug w/Green AWG 18)

L1

4

F1

Fuse

1/2 A, Slow Blow Blow

1

2

4

5

IC1

Mounting

Kit

Ref: PCB

31866.000.05

1

C20

20%

Chassis_Gnd

H13

3

6

Mounting

15025.000.01

2

F1b

F1a

Kit

Gnd Lift

Fuse Holder

V1

IC2

3

N/C

Chassis_Gnd

Cap

1 2

1 2

V2

4-40x.3125

M is c . H ard w are A c c e s s o rie s

Heatsink

50281.000.01

4-40x.375

4/40 4/40

Power Transformer

Toroid Assy

(off board)

WHITE

BLUE

BROWN

BLACK

4 2 3 1 1 4 2 5 3 6

J4

423

1

YELLOW/WHITE

ORANGE/WHITE

ORANGE

RED/WHITE

RED

J6

12345

4-40x.375

IC5

TO3 Insulator

YELLOW

4-40x.3125

+15V

Plus15V

6.8v Zener1N4736

21

CR21

R8

R9

CR7

CR8

R12

R13

R15

1N4736

120 Ω

120 Ω

120 Ω

120 Ω

1N4004

1N4004

1 2

120 Ω

120 Ω

120 Ω

120 Ω

CR22

21

5%

21

5%

21

5%

21

5%

5%

21

5%

21

5%

21

5%R14

21

6.8v Zener

16013.000.01

CR9

21

1N4004

+5v Reg

MC78M05CT

1

2

IC3

12

20%

C9

0.1F, 50v

Heatsink

3

C10

H11

20%0.1F, 50v

12

Plus5VA

12

C11

10%

100F, 25v

AGND

16013.000.01

CR11

2 1

1N4004

-5v Reg

MC79M05CT

2

3

1

IC4

20%

12

C12

0.1F, 50v

AGND

Heatsink

H12

20%0.1F, 50v

12

C13

12

C14

10%

100F, 25v

Minus5VA

0.1F, 50v

C2

0.1F, 50v

CR5

21

1N4004

+15v Reg

MC78M15CT

1

3

IC1

2

12

12

C3

20%

AGND

C1

CR6

2 1

1N4004

-15v Reg

MC79M15CT

2

1

21

IC2

C7

20%

AGND

20%

C4

0.1F, 50v

12

12

C6

3

12

C8

0.1F, 50v

Plus15V

C5

Minus15V

20%

R10

R11

10%

2 1

100F, 25v

2 1

100F, 25v 10%

TP10

1-2C

PlusRAW

CR4

CR3

2 1

2 1

1N4004

1N4004

12

20%

1000F, 35v

CR1

CR2

2 1

1N4004

1N4004

2 1

12

20%

1000F, 35v

MinusRAW

1-2C

6

AGND

TP11

Minus15V

DGND

CR18

2 1

1N4004

CR17

2 1

1N4004

CR13

1

3

SBL1630CT

CR14

1

3

SBL1630CT

2

R16

332 W

1%

MJ2955

2 C

21

CR15

3

+9v

2

1

SBL1630CT

2

TP7

20%

12

C15

6800F, 16v

LCD Backlight

TP8

J201

1 2

3 4

+9vB

21

C19

20%

1000F, 35v

DGND

5%

R3

R4

1/2 w.

2.0 W

CR19

Q3

1

21

1N4004

IC6

+5v Reg.

LP2950-5.0

1

3

2

12

C16

20%

0.1F, 50v

12

20%

C17

0.1F, 50v

12

C18

10%

CR16

2 1

470F, 25v

1N4734A

Power

5.6v Zener

DGND

16013.000.01

N/CN/C

Q1

TIP120

1/2 w.

5%

R5

1/2 w.

2.0 W

5%

2.0 W

Heatsink

H10

1

3 2

5%2.0 W

R6

1/2 w.

LED_Pulse

2N4400

Q2

R7

2

1%10.0K

1 3

CR20

2 1

DGND

CR10

CR12

2 1

2 1

1N4148

+5VA

1N4734A

5.6v Zener

AGND

1N4734A

5.6v Zener

—5VA

-15V

+5VD

DGND

TP1

TP2

1-6D

TP3

1-6C

PlusRAW

MinusRAW

+15V

Plus15V

Minus15V

-15V

TP5

TP4

TP6

TP9

+5VD

Power

DGND

DGND

+5VA

Plus5VA

Minus5VA

—5VA

Chassis_Gnd

+5VA

+15V

P900

1 2
3 4
5 6
7 8

9 10

11 12
13 14
15 16

8.5" Flat Cable

AGND

—5VA

N/C (Key)

-15V

1
2
3
4
5
6
7
8
9

10

J1

Testing Access

1

2

3

4

J202

Display Supply

+5VD

Digital SupplyAnalog Supply

P901

Power

1 2
3 4
5 6
7 8

9 10
11 12
13 14
15 16

4" Flat Cable

DGND

+5VD

Power

DGND

LED_Pulse

+9vB

Power Supply version 4
schematic 62045.000.04