Vega C-2000 User Manual
Model C-2000
Radio Control Console
C-2000HS C-2000
Technical Manual
March 26, 2003 P.N. 0980380
Revision B
Remote Control Console i
Table of Contents
1 INTRODUCTION...................................................................................................................................................................1
2 HARDWARE OVERVIEW ...................................................................................................................................................1
2.1 C-2000 CONSOLE..............................................................................................................................................................1
2.1.1 Main PCB...............................................................................................................................................................1
2.1.2 Keypad PCB...........................................................................................................................................................1
2.1.3 Line Interface.........................................................................................................................................................1
3 CONTROLS AND INDICATORS.......................................................................................................................................2
3.1 FRONT PANEL ..................................................................................................................................................................2
3.1.1 Common Controls and Indicators.....................................................................................................................2
3.2 REAR PANEL CONNECTIONS .........................................................................................................................................3
3.2.1 Rear Panel Ports...................................................................................................................................................3
4 LINE SETUP AND DESCRIPTION.....................................................................................................................................4
4.1 INTRODUCTION/DEFAULTS......................................................................................................................................4
4.2 FEATURE DESCRIPTION..............................................................................................................................................4
4.2.1 Crossmute ............................................................................................................................................................... 4
4.2.2 U2 OPTO Isolator.................................................................................................................................................4
4.2.3 J22...........................................................................................................................................................................4
4.2.4 Supervisor Function.............................................................................................................................................5
4.2.5 Relay Contact Closure For Local Control......................................................................................................5
4.2.6 Two-Wire/Four-Wire Mode.................................................................................................................................5
4.2.7 RX Side Settings....................................................................................................................................................5
4.2.8 TX Side Settings....................................................................................................................................................6
4.2.9 Transmit Monitor..................................................................................................................................................6
4.3 LEVEL ADJUSTMENTS....................................................................................................................................................6
4.3.1 Transmit Side Adjustments..................................................................................................................................6
4.3.2 Transmit Monitor Setup.......................................................................................................................................7
4.3.3 RX Level Adjustment.............................................................................................................................................7
5 SETUP MODE.........................................................................................................................................................................7
5.1 ENTERING SETUP MODE...............................................................................................................................................7
5.2 EXITING SETUP MODE...................................................................................................................................................8
5.3 MANEUVERING THROUGH SETUP MODE...................................................................................................................8
5.3.1 Setup Mode Control Keys...................................................................................................................................8
5.3.2 Setup Mode Philosophy.......................................................................................................................................8
5.4 SETUP STATES AND SETUP STATE OPTIONS...........................................................................................................8
5.4.1 Setup State 0 PIN Number Entry......................................................................................................................10
5.4.2 Setup State 1 PIN Number Change.................................................................................................................10
5.4.3 Setup State 2 Guard/Hold Tone Frequency...................................................................................................10
5.4.4 Setup State 3 Guard Tone Level.......................................................................................................................10
5.4.5 Setup State 4 Guard Tone Duration................................................................................................................10
5.4.6 Setup State 5 Hold Tone Level.........................................................................................................................11
5.4.7 Setup State 6 Hold Tone PTT Hang Time.......................................................................................................11
5.4.8 Setup State 7 Function Tone Level..................................................................................................................11
5.4.9 Setup State 8 Function Tone Duration...........................................................................................................11
5.4.10 Setup State 9 Single/Dual Function Tone Mode..........................................................................................11
5.4.11 Setup State 10 Function Tone Frequency......................................................................................................11
5.4.12 Setup State 11 Monitor Frequency Select.....................................................................................................13
5.4.13 Setup State 12 DTMF Keypad Enable/Disable/Enable(without PTT).....................................................13
5.4.14 Setup State 13 DTMF Tone Level....................................................................................................................13
5.4.15 Setup State 14 DTMF Hang Time ....................................................................................................................13
5.4.16 Setup State 15 MIC AGC Enable/Disable......................................................................................................13
5.4.17 Setup State 16 RX AGC Enable/Disable........................................................................................................13
5.4.18 Setup State 17 Main Speaker with Handset Enable/Disable.....................................................................13
5.4.19 Setup State 18 SF Mode Enable/Disable ***...............................................................................................13
5.4.20 Setup State 19 Aux Speaker Enable/Disable................................................................................................14
ii Vega’s C-2000
5.4.21 Setup State 20 Function Tone Enable/Disable.............................................................................................14
5.4.22 Setup State 21 Crossmute Output Enable/Disable.......................................................................................14
5.4.23 Setup State 22 Min Speaker Level Enable/Disable.....................................................................................14
5.4.24 Setup State 23 Handset Mic Level...................................................................................................................14
5.4.25 Setup State 24 Deskmic Level...........................................................................................................................14
5.4.26 Setup State 25 Aux Input Port Level...............................................................................................................14
5.4.27 Setup State 26 Panel microphone Input Level..............................................................................................14
5.4.28 Setup State 27 RX Line Jack Level..................................................................................................................15
5.4.29 Setup State 28 TX Line Jack Level..................................................................................................................15
5.4.30 Setup State 29 Clone Mode..............................................................................................................................15
5.4.31 Setup State 30 Full Duplex Mode Enable/Disable......................................................................................16
5.4.32 Setup State 31 Handset Enable/Disable........................................................................................................16
5.4.33 Setup State 32 Auto-Monitor Enable/Disable..............................................................................................16
5.4.34 Setup State 33 Tone/Local Mode.....................................................................................................................16
5.4.35 Setup State 34 Squelch Level...........................................................................................................................16
5.4.36 Setup State 35 Squelch Enable/Disable.........................................................................................................16
5.4.37 Setup State 36 Squelch Hang Time .................................................................................................................16
5.4.38 Setup State 37 TX Monitor Enable/Disable..................................................................................................16
5.4.39 Setup State 38 Tone Detector Threshold........................................................................................................17
5.4.40 Setup State 39 Headset Enable/Disable.........................................................................................................17
5.4.41 Setup State 40 TX Delay Period.......................................................................................................................17
5.4.42 Setup State 41 Desk Microphone Enable/Disable.......................................................................................17
5.4.43 Setup State 42 Ring Type Select ***..............................................................................................................17
5.4.44 Setup State 43 EMSTEL Enable/Disable ***...............................................................................................18
5.4.45 Setup State 44 DTMF Sequence Entry............................................................................................................18
5.4.46 Setup State 45 Ring Duration ***..................................................................................................................18
5.4.47 Setup State 46 DTMF Sequence Enable/Disable.........................................................................................18
5.4.48 Setup State 47 Function Tone Launch Delay................................................................................................18
5.4.49 Setup State 48 Parallel Update Enable/Disable..........................................................................................19
5.4.50 Setup State 49 Alert Tone Enable/Disable....................................................................................................19
5.4.51 Setup State 50 Alignment Tone ON/OFF.......................................................................................................19
6 THEORY OF OPERATION................................................................................................................................................20
6.1 AUDIO INPUT PATHS....................................................................................................................................................20
6.2 AUDIO OUTPUT PATHS ...............................................................................................................................................20
6.3 LINE RECEIVE PATH .....................................................................................................................................................20
6.4 SYSTEM CLOCK G ENERATION....................................................................................................................................21
6.5 NON-V OLATILE MEMORY (EEPROM).......................................................................................................................21
6.6 USER I/O..........................................................................................................................................................................21
6.7 CLONE MODE SERIAL PORT .......................................................................................................................................21
6.8 POWER REGULATION AND RESET CONTROL...........................................................................................................21
7 WARRANTY, SERVICE, REPAIR, AND COMMENTS................................................................................................22
8 SPECIFICATIONS...............................................................................................................................................................23
9 TECHNICAL DOCUMENTATION....................................................................................................................................24
9.1 PCB ASSEMBLY, C-2000 MAIN BOARD P.N. 879399.................................................................................................24
9.1.1 PCB # 750539 Rev. A.........................................................................................................................................24
9.1.2 PCB # 750539 Rev. B.........................................................................................................................................24
9.2 SCHEMATIC, C-2000 MAIN BOARD, P.N. 770651......................................................................................................24
9.2.1 SCH # 770651 Rev A..........................................................................................................................................24
9.2.2 SCH # 770651 Rev B..........................................................................................................................................24
9.3 PCB ASSEMBLY, C-2000 KEYPAD BOARD, P.N. 879400...........................................................................................24
9.4 SCHEMATIC, C-2000 KEYPAD BOARD, P.N. 770652.................................................................................................24
9.5 C-2000 TOP ASSEMBLY, P.N. 0110188........................................................................................................................24
Remote Control Console iii
Table of Tables
Table 1 Setup States. ........................................................................................................................................................9
Table 2 Guard/Hold Tone..............................................................................................................................................10
Table 3 Guard Tone Level.............................................................................................................................................10
Table 4 Guard Tone Dur................................................................................................................................................10
Table 5 Hold Tone Level................................................................................................................................................11
Table 6 PTT Hang Time ................................................................................................................................................11
Table 7 Function Tone Level.........................................................................................................................................11
Table 8 Function Tone Dur...........................................................................................................................................11
Table 9 S/D Function Mode...........................................................................................................................................11
Table 10 Available Function and Monitor frequencies............................................................................................12
Table 11 DTMF Tone Level...........................................................................................................................................13
Table 12 Function Tone Dur.........................................................................................................................................13
Table 13 Handset MIC Level.........................................................................................................................................14
Table 14 Deskmic Level................................................................................................................................................14
Table 15 Aux Input Level...............................................................................................................................................14
Table 16 Panel MIC Level.............................................................................................................................................14
Table 17 RX Line Level.................................................................................................................................................15
Table 18 TX Line Level.................................................................................................................................................15
Table 19 Squelch Level..................................................................................................................................................16
Table 20 Tone Detector .................................................................................................................................................17
Table 21 TX Delay Period.............................................................................................................................................17
Table 22 Ring Tones......................................................................................................................................................17
Table 23 DTMF Sequence.............................................................................................................................................18
Table 24 F -tone Launch.................................................................................................................................................18
Table 25 Table of Notes for C-2000 personality.......................................................................................................19
Table 26 Table of Notes for C-2000 Function Tone Frequencies..........................................................................19
Table of Figures
Figure 1 Front Panel Diagram.......................................................................................................................................2
Figure 2 Rear Panel Diagram........................................................................................................................................3
Figure 3 Rear Panel Pinout............................................................................................................................................3
Figure 4 Line Connector Pin Out.................................................................................................................................4
Figure 5 Crossmute Function example........................................................................................................................4
Figure 6 Supervisor Function Example........................................................................................................................5
Figure 7 Master/Slave Console Configuration...........................................................................................................6
Figure 8 Serial Cable Diagram. ..................................................................................................................................15
iv Vega’s C-2000
C-2000 DEFAULT SHIPPING CONFIGURATION:
The C-2000HS is shipped from the factory in the following state:
1) 4 Wire Mode
2) Full Duplex
3) TX Monitor Enabled
4) F3 – F16 Disabled
5) 600 Ohm TX output impedance
6) 600 Ohm RX input impedance
The C-2000 is shipped from the factory in the following state:
1) 4 Wire Mode
2) Full Duplex
3) TX Monitor Enabled
4) F3 – F16 Disabled
5) 600 Ohm TX output impedance
6) 600 Ohm RX input impedance
7) Handset Disabled
8) Desk Microphone Enabled.
DISPLAY CHARACTER DESCRIPTION
CC Clone Complete: Cloning has successfully completed.
CL Clone Mode: Clone Mode has been entered.
C? CrossMute: Another parallel console is active and pull Crossmute low.
CP Correct PIN: The PIN number was correctly entered.
EE Error: An Error has occurred, seen in Clone Mode if cloning fails.
EP Enter Pin: A PIN number needs to be entered to access Setup Mode.
Fd Function Duration: Function Duration programming Mode has been entered.
FF Function Frequency: Function Frequency programming Mode has been entered.
IP Incorrect PIN: An incorrect PIN number was entered.
OC Option Changed: The option selected and been changed.
PC PIN Changed: The PIN was successfully changed.
SS Settings Saved: The current settings have been permanently saved.
SU Supervisor: The supervisor pin has been activated by a parallel console.
Remote Control Console 1
1 Introduction
The model C-2000 is a full featured single -channel, multi-format, and self-contained desktop radio control console.
Its sleek and modern look will compliment any surroundings.
The C-2000 is a Digital Signal Processor (DSP) based design, allowing easy field programmability using the DTMF
keypad on the front of the console. Unlike other manufacturers’ equipment, no additional software is required to
program the C-2000 console. Modifications and enhancements can generally be made via a software change only. If
the user determi nes they require a special feature enhancement, please contact the Vega Sales Department for cost
and feasibility.
Initial Line level adjustments are made via potentiometers allowing for ease of installation. Should additional
adjustments be required, they can be made in the programming mode. AGC on the receive and microphone audio
paths help stabilize line level adjustments.
The C-2000’s modular design offers control of one base station, along with selection of 99 frequencies. The line
interface offers crossmute capability and squelch control feature eliminating the unwanted noise that is generally
associated when monitoring a line.
The C-2000 will accommodate a desk microphone along with a handset (or headset) as indicated on the side of the C2000 console. In addition to the external microphone options, a built in panel microphone is available by pressing the
PTT on the front of the panel. When a PTT occurs from any of the three microphones, the others will mute so as not
to pick-up unnecessary ambient noise during transmission. When the handset is enabled and taken off hook the
receive audio is transferred to the earpiece.
The console is normally used in conjunction with a matching Vega 223 Series (or equivalent) tone-remote panel
located at the base station. The console is compatible with Motorola, MA/ComNet Ericsson/GE, and other toneremote control systems employing the industry-standard sequential tone-control format.
The console is connected to the mating panels by means of shielded voice-grade or better leased or private lines
(including microwave circuits). Metallic or DC continuity is not required.
2 Hardware Overview
The C-2000 is a single -line, multi-mode console designed specifically for small to medium level system requirements.
All functions are housed in a single small modern looking console.
2.1 C-2000 Console
The C-2000 consists of the following two sub-assemblies enclosed in the single case: Main Processing Board and
Keypad/Display Board.
2.1.1 Main PCB
The Main PCB is mounted to the bottom of the enclosure using 4 #6 screws. It contains the DSP that handles all
audio processing and user interface features. One stereo Digital to Analog Converter (DAC) is utilized to generate
audio for transmission, handset sidetone, and receive audio. One stereo Analog to Digital Converter (ADC) on the
main board digitizes audio from the line, microphone and the auxiliary interface. All audio detection, generation, and
filtering are performed within the DSP. Five potentiometers are available for I/O signal level adjustment, in addition to
the software level control.
2.1.2 Keypad PCB
The Keypad board is interfaced to the main board via a 34-pin ribbon cable. The Keypad board contains the LED’s,
the entire key map matrix, the dual seven-segment display and the panel mi crophone. The driver circuitry for each
component is located on the Main PCB.
2.1.3 Line Interface
The Line Interface is an 8 pin RJ-45 connector, using either the standard tone control format compatible with
Motorola and M/A ComNet Ericsson/GE or Local Control relay closure. The line interface may be hardware
2 Vega’s C-2000
IC
4 5 6 B 7 8 9 C
*
configured for either two-wire or four-wire operation and may be factory modified to accommodate non-industry
standard tone control formats if desired. This is usually a software only change.
3 Controls and Indicators
1 2 3 A
#
VOLUME
0
MON
D
TRANSMIT
Figure 1 Front Panel Diagram
3.1 Front Panel
Figure 1 shows a view of the Front panel. The Front panel contains the user I/O. It features volume and Function
Tone selection, intercom and monitor functions, DTMF keypad, panel PTT and microphone, as well as the dual
seven-segment display.
3.1.1 Common Controls and Indicators
Volume Control: Adjusts the receive audio speaker and handset level of the audio present on the receive inputs of
the line interface. A minimum volume level can be set in the setup mode so that the console operator can not turn the
volume to zero. When adjusting the level up or down, the display shows the selected level on a relative scale with 0
being off and 25 being full volume.
Panel PTT Pushbutton: When pressed, audio from the panel microphone, or desk microphone if enabled, will be sent
on the TX line interface.
DTMF Keypad: The DTMF keypad is used for transmitting DTMF. The DTMF keypad is also used in the setup
mode. It can also be disabled in user mode.
Dual Seven-Segment Display: Displays selected frequency and will update with parallel frequency selection if active.
Function Buttons Up-Down: The Up and Down arrows, just below the display, are used to select the desired function
tone. Pressing the arrows changes the value in the desired direction. Once the desire function tone is selected, the
unit will pause, blink and then send the function tone shown on the display. The pause and blink rate are
programmable in setup mode. Only enabled function tones are displayed and transmitted. No hold tone is associated
with the changing of the function tone. A function tone shall remain selected until the operator changes the setting.
Transmit LED: This LED lights when any PTT source is depressed keying up the console. It will also blink if a Hold
tone is detected on the TX audio line. This would indicate to the operator that another console is currently
transmitting on the channel.
Monitor: When the Monitor button is pressed a Monitor tone burst is sent out. The Monitor tone burst consists of
a guard tone and function tone of 2050Hz(default value). The MON LED lights for the duration of the tone burst.
Remote Control Console 3
1 2 3 4 5 6 7 8
1 2 3 4 5 6
1 2 3
Intercom (IC): When the Intercom button is pressed and held down the C-2000 shall transmit audio without
activating the tone generator or local relay. Intercom is considered a PTT operation with the tone generator and local
control relay disabled. The selected microphone is based on setup and/or hook switch status.
3.2 Rear Panel Connections
Figure 2 shows drawing of the rear panel of the C-2000. Each of the ports shown is discussed in detail in the
following section.
3.2.1 Rear Panel Ports
Power Jack: The left most jack on the C-2000 is the Power Jack. The power supply that is included with the unit
plugs in to this location. It is a standard 2.5mm center positive plug and requires at least 12V to operate correctly.
Figure 2 Rear Panel Diagram
Line Port: The C-2000 is equipped with a single line jack. It is the second connector from the left. The connector is a
standard eight pin RJ -45. The pinout of the connector appears in Figure 3. The numbering of the pins are shown in
Figure 3 for reference. In addition to the standard RX and TX pin pairs, the unit also can be supervised and supports
cross mute functions. Pins 7 and 8 of the Line connector can be used as a form C closure relay for local control. Pins
7 and 8 form the closure during any PTT operation. An internal resistor makes an external connection to ground unnecessary, and can be removed to remove ground from the closure path.
Auxiliary Audio Input: The external 6 pin terminal block provides an Audio Input (1), PTT (2), and GND (6) line.
Pulling PTT to ground activates the Audio Input line for transmitting audio from an external source. This input is a
high impedance capacitance coupled input.
Auxiliary Speaker: Pin 1 of the AUX Port is a capacitance coupled low impedance output that can be used to drive
an external speaker amplifier. Output level is controlled by the front panel volume control.
1) Cross Mute I/O
2) Supervisor I/O
3) RX +
4) TX +/(RX+2W)
5) TX -/(RX - 2W)
6) RX -
7) Local
8) GND/Local
Rear Panel Connector Pinouts
1) RX Audio 2) PTT
3) +12V 4) Aux Audio In
5) Earth GND 6) Sig GND
1) TXD
2) RXD
3) GND
Figure 3 Rear Panel Pinout
Battery backup: The +12V power input on the AUX Port is used for battery backup and is a diode-protected input.
Earth Ground: The Earth ground connection on the AUX Port MUST be connected for proper operation. It provides
a path for any external noise to be shunted to.
Data port: This port is a 0 to 10V asynchronous port used for cloning one C-2000 to another. The cable is not
supplied but the connector is. To connect two units, RX on one console should be connected to TX of the other
console. Ground is connected straight through. This is a non-standard serial port used only for the C-2000 cloning
function. Refer to 5.4.30 for details.
4 Vega’s C-2000
1 2 3 4 5 6 7 8
Line +
4 Line Setup and Description
4.1 INTRODUCTION/DEFAULTS
1) Cross Mute I/O
2) Supervisor I/O
3) RX +
4) TX +/ (RX + 2W)
5) TX -/ (RX - 2W)
6) RX -
7) Local
8) GND/Local
Connector View
Figure 4 Line Connector Pin Out
The Line interface for the C-2000 console provides communication with any standard tone remote system. Figure 4
shows the pin out of the line interface connector, which is on the rear panel (See Figure 2 and Figure 3).
4.2 FEATURE DESCRIPTION
4.2.1 Crossmute
When a parallel console operator keys a microphone in the same room, the crossmute function mutes the receive
audio path of the other parallel consoles. This prevents any unwanted audio loops that could occur, causing a loud
squeal on the paralleled speakers.
Console 1: Console 2: Console 3:
Offsite
Console 4:
Line 1
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
Line 1Line 1Line 1
Line -
Figure 5 Crossmute Function example.
Feedback may be avoided by muting the receive audio of the other consoles which are in parallel with a transmitting
console. This may be accomplished by connecting pins 1 and 8 of each of the consoles to be crossmuted as shown
in Figure 5. Pin 8 must be connected to provide a common ground. Figure 5 illustrates the connections between
consoles 1 through 3 that are in the same room and when one transmits, the receive audio on the other consoles will
be muted. Console 4 is off-site with no possibility of feedback, therefore, it is not connected and will not be muted.
Note: The intercom function will not work between crossmuted consoles.
4.2.2 U2 OPTO Isolator
U2, J18, J19 and J21 have been added to Main PBC rev B and tied in parallel to the X-Mute and Supervisory logic.
Currently there is no programmed functionally within the unit and J18 and J21 should remain to the “B” position.
4.2.3 J22
J22 is a factory test jumper and not used in the field.
Remote Control Console 5
4.2.4 Supervisor Function
Console 1: Console 2: Console 3:
Line 1
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
Figure 6 Supervisor Function Example.
The Supervisor Function enables a console, such as the C-1610, which has the capability to drive this line, to disable
all units on a particular line. This includes both PTT and RX audio. Its connection is similar to that of the crossmute
function. By wiring alone, it is possible to setup only specific consoles with this feature. Figure 6 shows the
connection scheme required to utilize this function. Pin 2 of all consoles are connected together. In addition, Pin 8 is
also connected together on all consoles, serving as a common ground for all consoles. Assuming that console 1 has
supervisory capability, when activated, Line 1 on parallel consoles 2 and 3 would then be inhibited from both
Transmit and Receive. In addition, the C-2000 will display “SU” on the seven segment display if a master console,
such as the C-1610, activates the Supervisor function.
Line 1Line 1
Line Line +
4.2.5 Relay Contact Closure For Local Control
The relay is normally open and provides a dry contact closure during PTT functions between pins 7 and 8 of the line
jack. The relay closure can carry 500mA at 12VDC or 250mA at 115VAC. When using the intercom function the relay
is not activated. If this relay closure is used for local control (or any other case where tone bursts are not used for
signaling) disabling the tone generation is recommended by entering the setup mode. J20 allows for a circuit ground
to be coupled to the relays common pin. “A” position = Grounded, “B” = Loop
4.2.6 Two-Wire/Fou r-Wire Mode
The C-2000 comes standard with a jumper selectable two or four -wire option. Note: The C-2000 is shipped in the fourwire mode. Two-wire mode is accomplished by the following jumper positions:
Two-Wire: Jumper Position
JP10 A
JP11 A
Four-Wire: Jumper Position
JP10 B
JP11 B
The RX pair is now on pins 3 and 6 on the connector and the TX pair is on pins 4 and 5. Once the transmit and
receive paths are separated the impedance of each side must be set.
4.2.7 RX Side Settings
In 4 Wire mode, the RX side is jumper selectable for a 600 ohm impedance or 10k ohm impedance. If only one console
is on the line (no parallel consoles) then place J8 in the A position for a 600 Ohm line impedance. If more than one
console is on one line, then place J8 on ONE console in the A position and all other consoles in the B position. Each
console added to the system will result in line loss. The following chart gives an indication as to how much loss can
be expected. The first console in the system is set for an impedance of 600 ohms out (approximately). Each console
added to the system thereafter is set for an impedance of 10k ohms. As the chart indicates on the following page, the
more consoles bridged on the line, the lower the line impedance and the greater the loss in audio level. In 2 Wire
mode, all consoles should have J8 in the “B” position.
6 Vega’s C-2000
Console # J8 Position Impedance Impedance Loss (dB)
1 A 604 604 0.0
2 B 10k 569 -0.5
3 B 10k 539 -1.0
4 B 10k 511 -1.5
5 B 10k 486 -1.9
6 B 10k 464 -2.3
Level adjustment can be made to the receive audio by entering the setup mode or adjusting the RX level POT inside
the C-2000.
4.2.8 TX Side Settings
The C-2000 TX output circuitry has a DPDT relay that is used to connect and disconnect the TX output transformer
from the TX line based on PTT status. This allows a very large number of consoles to be attached to the line in
parallel, because only the transmitting unit will be directly connected to the line. When not transmitting, the DPDT
relay is connected to 600 ohms or open circuit depending on the number of console connected in parallel to the line.
If only one console is attached, this unit should have J12 in the “A” position. This makes it the effective master and
terminates the line with 600 ohms. If there is more than one console connected in parallel, one console should be
designated as the master by placing J12 in the “A” position. The remaining consoles should be designated as a slave
and should have J12 placed in the “B” position. In this manner, the impedance looking back into the parallel
configuration of consoles is still 600 ohms. Figure 7 shows the basic configuration. The C-1610 could also be the
master in this configuration. NOTE: If any of the consoles connected in parallel are not C-2000’s, then all the C-2000’s
should be configured as slaves. Additionally, J14 should be used as a TX line impedance correction if there are
consoles other than the C-2000 connected in parallel. J14 position “B” adds another 600ohms to the output TX line.
J14 Position “A” is straight through.
Master
J12 POS A
600
Slave
J12 POS B
open
Slave
J12 POS B
open
Slave
J12 POS B
open
ohms
C2000 Multiple Console Configuration
Leased
Line
Figure 7 Master/Slave Console Configuration.
4.2.9 Transmit Monitor
In a four-wire system with parallel consoles, the transmit line may be monitored. Refer to section 4.3.2, the monitor
level setup on adjusting the level. The transmit monitor is not needed in two -wire mode as the transmit audio is
already on the receive circuit. The transmit monitor, in 4 wire mode, is used to detect transmit activity for the TX
Detect LED.
4.3 Level Adjustments
4.3.1 Transmit Side Adjustments
The transmit audio consists of multiple audio sources – microphone audio, AUX input, function tones, and DTMF
tones. Each audio sources is summed or generated in the DSP with the analog signal being generated on a single
DAC. The following is a list of the potentiometers that affect the transmit path.
Remote Control Console 7
Reference Description
R171 TX Output Level Adjustment
R105 Desk Microphone Adjustment
R115 Hand Set Microphone Adjustment
MIC INPUT LEVEL ADJUST:
Care should be taken to avoid overdriving the input TX circuitry, as this will distort the audio. Make sure you have
enabled the desired Microphone connection in setup mode. Saying and holding the word “Four” is a good audio
level test vocalization. Use a strong tone of voice.
When adjusting the Hand Set audio input level connect a oscilloscope to Test point TP3 and adjust R115. Speak into
the Hand Set and adjust the audio to approximately 3.5Vp -p. A portion of the handset audio will be routed to the
Hand set earpiece, this level is adjustable in setup mode.
For the Desk Microphone input, repeat the sequence only monitor Test point TP2 and adjust R105. Make sure that
the Desk Microphone is at the normal distance from the operator when setting the level.
TX OUTUT LEVEL ADJUST:
The transmit level potentiometer is used to adjust the output level of the transmit audio so that it is calibrated with
the tone levels that were set in setup mode. Calibration of the TX line will vary depending on system variables as
well as the number of consoles found in parallel on the line. A easy way to align the console for the correct level is to
press and hold the PTT key. While the console is keyed up, the unit will by default be generating a Hold tone at –
20dBm. A meter reading dBm can then be used and R171 adjusted to read the correct value. Also a alignment tone,
Section 5.4.51 Setup state 50 is provided (REV.2.3 and higher operating software).
4.3.2 Transmit Monitor Setup
The transmit monitor provides a portion of the transmit audio of a four-wire circuit to the receive path. This allows
the console operator to listen to the transmissions of parallel console operators. To set this level have a parallel
console operator press the intercom button. Adjust R104 until the level is comfortable in the handset/headset
earpiece or the speaker. Make sure this feature is enabled or no audio will be passed. See Setup Mode.
4.3.3 RX Level Adjustment
The RX level should be adjusted so that the maximum level coming into the console use the entire range of the ADC,
which is 0-4V. A test tone of +3dBm to -5dBm coming into the line interface is a good value to use. Adjust R89 so
that the signal seen on an oscilloscope at Test point TP4 is approximately 3.8Vp-p.
5 Setup Mode
5.1 Entering Setup Mode
Entry into the C-2000 Setup mode is accomplished by pressing and holding the “IC-MON” keys, then pressing the
“2” key. The IC and MON buttons will stay lit when in setup mode. If a PIN number is required, an “EP” will appear in
the display requesting that the four-digit number be entered. If the number is entered incorrectly, the C-2000 will
display “IP”, for incorrect PIN, and return to user mode. No PIN number is required if the system defaults are set.
Default values can be restored to the unit buy Pressing and holding the Function Up and Function Down keys when
power is applied to the unit . If a PIN number has been set, it will be requested before resetting to default values, if the
PIN is entered incorrectly the C-2000 will not reset its values to default and will enter the user mode. PIN numbers can
be enabled/disabled/changed in Setup Mode, see section 5.4.2. If the PIN number is lost or forgotten, a system
override is available that will set all parameters back to default. To reset the system parameters, power down the unit.
Open the case and disconnect the speaker. Next, place test jumper J17 in the “A” position and power up. This mode
resets defaults and does a system test. The C-2000 has now stored system defaults, which includes no PIN number.
Power down and place J17 in the “B” position. Connect the speaker, close the case and power up the unit.
8 Vega’s C-2000
5.2 Exiting Setup Mode
Exiti ng Setup Mode is done the same manner as entering Setup Mode. Pressing and holding the “IC-MON” keys,
then pressing the “2” key will return the user to normal operation mode. Note, settings will be saved on exit. To save
settings before exiting setup mode, press and hold the “IC” key and then press the “D” key.
5.3 Maneuvering Through Setup Mode
5.3.1 Setup Mode Control Keys
The main control keys are:
VOLUME UP and DOWN: Selects the Setup State by scrolling up and down through the allowed states.
FUNCTION UP and DOWN: Selects the Setup Option for the current Setup State by scrolling through the
allowed options for that state.
DTMF POUND KEY (#): Used as the Enter Key. Pressing this key will enter the current option for the
current state. It also takes you into a more complicated mode if more than a
simple enable/disable is required.
DTMF STAR KEY (*): Used as the Escape Key. Pressing this key will exit without saving from certain
setup states that require it. Note: Only a few states use this key.
DTMF A and B KEYS: These keys are used to program Function Tone Frequencies main and sub-tone.
It is also used to select Clone mode Master or Slave.
IC and D KEY: Pressing and holding IC, then pressing D will save the changes made to Setup
Mode.
IC and MON KEYS: Pressing these keys together while in the PIN CHANGE state will disable the PIN.
Note: This key sequence is not used in any other state.
TRANSMIT KEY: This key is used to display the current Setup State, once the display has
changed to the setup option.
5.3.2 Setup Mode Philosophy
Once Setup Mode is entered, the operator will use the VOLUME UP and DOWN keys to select the Setup State. The
Setup State is the system function that the operator wishes to change or enable. The display will show the Setup
State number and both decimal points for 1 second and then change to the Setup State option number that is
currently programmed, with no decimal point. If you wish to review the Setup State while the setup option is being
displayed, simply press the TRANSMIT key on the front panel and the current Setup State will be displayed as long
as the key is held. Once you have scrolled to your desired Setup State and the display has changed to that states
currently programmed setup option, the operator can now use the FUNCTION UP and FUNCTION DOWN keys to
scroll to the appropriate setup option. The display will show the setup option number and NO decimal points. The
selection will only scroll to those option values that are available to that Setup State, i.e., an enable/disable Setup
State will have option 1 and 2, with 1=enable and 2=disable and no other. Now pressing the ENTER (#) key will
program the selected option for the current state. Once programming completes, the display will show “OC” for
option changed, then display the current Setup State.
Saving the changes made to a Setup State is done by pressing and holding “IC” and pressing “D”. The display will
show “SS” for saving settings, and then returns to the current Setup State. Exiting Setup Mode automatically saves
the settings. If the settings are not saved and power is lost, the changes will be discarded.
There are certain Setup States that have more complex user interface features. These will be detailed in each Setup
State section.
5.4 Setup States and Setup State Options
SETUP STATE SETUP STATE NAME AND BREIF DESCRIPTION
0 PIN Number Entry/Idle: Automatically entered when Setup Mode is accessed.
1 PIN Number Change: Used to change the Setup Mode PIN number.
2 Guard/Hold Tone Frequency: Selects between 2175Hz and 2300Hz.
3 Guard Tone Level: Sets the level of the Guard tone.
4 Guard Tone Duration: Sets the Guard tone duration
5 Hold Tone Level: Sets the Hold tone level
Remote Control Console 9
6 Hold Tone Hang Time: Sets the time PTT and the hold tone is held after the Key release.
7 Function Tone Level: Sets the level of the Function tone.
8 Function Tone Duration: Sets the duration of the Function tone.
9 Single/Dual Function Tone Mode select:
10 Function Tone Frequency select Mode: Single mode F-Tone frequency.
11 MON Frequency Selection: Set Frequency of the monitor tone. 2050Hz default.
12 DTMF Keypad Enable/Disable:
13 DTMF Tone Level: Set the level of the DTMF tone generator.
14 DTMF Hang Timer: Time between DTMF tones that the Guard/Hold tone will wait.
15 MIC AGC Enable/Disable:
16 RX AGC Enable/Disable:
17 Main Speaker With Handset Enable/Disable:
18 Single Frequency Telephone mode: ***
19 Auxiliary Speaker Enable/Disable:
20 Function Tone Enable/Disable: Select any F-tone from 1-99 to enable or disable, either mode.
21 Crossmute Enable/Disable:
22 Min Speaker audio level Enable/Disable:
23 Handset MIC gain setting: Set the gain used for input audio on the handset microphone.
24 Deskmic gain setting: Set the gain used for input audio on the desk microphone.
25 Aux port gain setting: Set the gain used for input audio on the auxiliary port.
26 Panel Mic gain setting: Set the gain used for input audio from the panel microphone.
27 RX gain setting: Set the gain for the input RX audio.
28 TX gain setting: Set the gain for the output TX audio.
29 Clone Mode Entry: Enter the Clone mode. Press enter key, then select RX or TX.
30 Duplex Mode Enable/Disable:
31 Handset Enable/Disable:
32 Monitor Mode Enable/Disable:
33 Tone/Local Mode Enable/Disable:
34 Squelch Threshold Level: Set the threshold the squelch breaks at.
35 Squelch Enable/Disable:
36 Squelch Hang Timer: Set the time the squelch stays on after the threshold is broken.
37 TX Monitor Enable/Disable:
38 Tone Detector Threshold: Set the threshold level of the tone detector.
39 Headset Hook Switch Enable/Disable:
40 TX Delay Period: Set the amount of time TX output audio is delayed. 500ms max.
41 Desk Microphone Enable/Disable:
42 Ring Type Select: Select the type of annunciation on incoming call. ***
43 EMSTEL Enable/Disable: Enable EMS Telephone mode. ***
44 DTMF Sequence Entry: Program the DTMF strings or sequences.
45 Ring Duration Entry: Program the number of rings that will occur before no answer. ***
46 DTMF Sequence Enable/Disable:
47 Function Tone Delay: Program the amount of delay between Fup, Fdown and F-tone launch.
48 Parallel Update Enable/Disable:
49 Alert Tone Enable/Disable:
50 Alignment Tone ON/OFF: Turns a test tone on and off.
*** Special Software Option.
Table 1 Setup States.
10 Vega’s C-2000
Setup Mode Navigation Overview:
IC, MON and 2: Used to access and exit Setup Mode.
VOLUME UP/DOWN: Set the current Setup State. Number displayed with both decimal points lit.
FUNCTION UP(5) /DOWN(6): Set the Setup State option. Number displayed with no decimal points lit.
ENTER (#): Key used to enter a value or mode. “OC” or mode indication displayed after press.
IC and D: Used to save any change that was made in Setup Mode. “SS” is displayed momentarily.
Any other keystroke of import ance will be detailed in the Setup State section where it is used.
If no PIN is required, then upon entering the Setup Mode key sequence (IC-MON-2) the user will go directly to Setup
State 1.
Descriptions of each Setup Variable appear in the following sections. In all option menus, the default option is
denoted with an “*”.
5.4.1 Setup State 0 PIN Number Entry
Usage: Setup State 0 is automatically entered when the Setup Mode key sequence is entered (IC-MON-2). If a PIN
number is required, “EP” will be displayed. At this point, the user will have to enter a 4 digit PIN number.
The display will sequence through “1,2,3,4” as the PIN is entered. If the PIN is correct, setup mode will
automatically go to Setup State 1, PIN Change. The user is now free to scroll through the Setup States. If the
PIN is entered incorrectly, an “IP” will be displayed and the C-2000 will return to the normal operation mode.
If no PIN is required, then upon entering the Setup Mode key sequence (IC-MON-2) the user will go directly
to Setup State 1.
5.4.2 Setup State 1 PIN Number Change
Usage: To change the PIN Number, maneuver to Setup State 1 using the VOLUME UP/DOWN keys. Then press the
ENTER (#) key. The display will show “EP” expecting a new PIN Number to be entered. The display will
sequence through “1,2,3,4” as the new PIN is entered. Once 4 digits have been entered, the display will
show “EP” requesting the PIN again as a confirmation. If the PIN’s match, the display will show “PC” for
PIN Changed. If the PIN’s do not match the display will show “IP” for incorrect pin and you will be forced
back to normal operation mode. To remove a PIN, press the ENTER (#) key. The display will show “EP” as if
you were changing the PIN. Press and hold the IC key, then press the MON key. The display will show “Pd”
for PIN disabled. The changes are automatically saved.
5.4.3 Setup State 2 Guard/Hold Tone Frequency
Usage: Setup State 2 is used to set the frequency of the Guard and Hold tones.
Two values are valid for setup frequencies. See Table 2 for setup options.
Select the setup option and press ENTER (#), the display shows “OC” for
option changed.
Option Frequency
1* 2175Hz
2 2300Hz
Table 2 Guard/Hold Tone
5.4.4 Setup State 3 Guard Tone Level
Usage: Setup State 3 is used to set the level of the Guard tone. The guard tone has
a 40dB range. See Table 3 at the right. The values in between those shown
in the table are valid as well, for example 25 would result in an output level
of -6dB for the Guard Tone. Select the setup option and press ENTER (#),
the display shows “OC” for option changed.
Option Level
1 -30dB
11 -20dB
21 -10dB
31 0dB
41* +10dB
Table 3 Guard Tone Level
5.4.5 Setup State 4 Guard Tone Duration
Usage: The Guard Tone Duration can vary from 0 to 500ms and is settable to the
nearest 10ms. The setup option is offset by one and multiplied by 10. See
Table 4 at the right. Any value between those on the table is valid. Select
the setup optio n and press ENTER (#), the display shows “OC” for option
changed.
Option Duration
1 0 ms
14* 130ms
51 500ms
Table 4 Guard Tone Dur.
Remote Control Console 11
5.4.6 Setup State 5 Hold Tone Level
Usage: Setup State 5 is used to set the level of the Hold tone. The Hold tone has a
40dB range. The values in between those shown in the table are valid as
well, for example 25 would result in an output level of -6dB for the Hold
Tone. Select the setup option and press ENTER (#), the display shows
“OC” for option changed.
5.4.7 Setup State 6 Hold Tone PTT Hang Time
Usage: The PTT Hang Time Duration can vary from 0 to 500ms and is settable to
the nearest 10ms. The setup option is offset by one and multiplied by 10.
The purpose of this setting is to allow some programmable amount of time
for the hold tone to continue after the PTT is released. This allows for the
PTT to be released and pressed again without resending the GuardFunction sequence. Select the setup option and press ENTER (#), the
display shows “OC” for option changed.
5.4.8 Setup State 7 Function Tone Level
Usage: Setup State 7 is used to set the level of the Function tone. The Function
tone has a 40dB range. The values in between those shown in the table are
valid as well, for example 25 would result in an output level of -6dB for the
Function Tone. Select the setup option and press ENTER (#), the display
shows “OC” for option changed.
5.4.9 Setup State 8 Function Tone Duration
Usage: Usage: Function Tone Durations can vary from 0 to 500ms and are
settable to the nearest 10ms. GLOBAL DURATIONS: Use the Function
control keys to adjust the duration option (1-51). Press “A” for the
Function Tone duration to be globally changed. This includes the main and
sub-tones. “OC” will be displayed to show the option has been changed.
Do not press “#” for global changes.
INDIVIDUAL DURATIONS: Function Tone durations are modified by
pressing Enter(#), observe the “Fd” on the display. FTone duration mode has been entered. Use the
instructions for Setup State 10 Function Tone Frequency setup, only applied to the duration table for Setup
State 8.
Option Level
1 -30dB
11* -20dB
21 -10dB
31 0dB
41 +10dB
Table 5 Hold Tone Level
Option Duration
1 0 ms
21* 200ms
51 500ms
Table 6 PTT Hang Time
Option Level
1 -30dB
31* 0dB
41 +10dB
Table 7 Function Tone Level
Option Duration
1 0 ms
5* 40ms
51 500ms
Table 8 Function Tone Dur.
5.4.10 Setup State 9 Single/Dual Function Tone Mode
Usage: Setup State 9 is used to set whether the C-2000 generates single or dual
function tones. In the single function tone mode, Function tones F1-F16
are valid and will be sent per the programmed values of frequency,
duration, and level. In the Dual tone mode, two function tones are sent out
in which the first function tone is the tens digit and the second function
tone is the ones digit. F10 is used as ze ro. In the dual mode it is important
to remember that the settings for F1-F10 are used for the digits. Remember that the frequencies programmed
for F1-F10 will be transmitted to the tone remote. If the user modifies the frequencies of F1-F10, the tone
remote at the radio must be capable of Dual Function Tone mode and the frequencies must be modified to
match the C-2000. Select the setup option and press ENTER (#), the display shows “OC” for option
changed.
Option Setting
1* Single Tone
2 Dual Tone
Table 9 S/D Function Mode
5.4.11 Setup State 10 Function Tone Frequency
Usage: Setup State 10 is used to set the frequency of a particular Function Tone. It is a more complex setup state.
Each Function Tone has a main tone and one sub-tone. Once the user maneuvers to Setup State 10 using
the VOLUME UP/DOWN keys, they will have to enter the Function Tone Frequency setup mode. Notice
that, prior to entry, the FUNCTION UP/DOWN keys have no effect on the setup option. Function Tone
Frequency setup mode has yet to be started.
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