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Gentner VRC2000 Installation And Operation Manual

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VRC2000
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Operations Manual

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  • Page 1 VRC2000 Installation and Operations Manual...

  • Page 2: Vrc2000 Installation And Operations Manual

    Copyright Information © Copyright 1997 Gentner Communications Corporation. All rights reserved. No part of this manual may be reproduced in any form or by any means without written permission from Gentner Communications Corporation. Printed in the United States of America. Original version, 11/89. Gentner Communications Corporation reserves specification privileges.

  • Page 3: Table Of Contents

    Telephone Number Programming Exercise Alarms Programming VRC2000 Alarm Delays and Channels Setting Up Status Channels Status Channel Programming Exercise Metering Channels Calibration Constant and Tolerance Limits Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 4 Auto-Logging Maintenance and Service General Treatment Troubleshooting Frequently Asked Questions Specifications Firmware License Warranty FCC Part 15 Compliance FCC Part 68 Compliance U.S. Patent Information Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 5 Worksheet 9: Mute Assignments Worksheet 10: Command Channel Setup Worksheet 11: Metering Channel Setup Worksheet 12: Status Channel Setup Appendix I: Word List Appendix J: Schematics Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 6 Table 15. Command 1–8 Pinout Table 16. Command 9–16 Pinout Table 17. Metering Pinout Table 18. Status Pinout Table 19. VRC2000 Chip-Enable Logic Table 20. Hardware Interrupt Prioritization Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 7: Introduction

    Page 1 Introduction Congratulations on purchasing the VRC2000 Voice Remote Control. The VRC2000 is a very flexible remote control system. It can be set up to efficiently and effectively monitor a wide variety of remote equipment, including broadcast transmitters. The VRC2000’s built-in voice synthesizer allows the unit to talk over any standard dial-up telephone line in plain English, providing complete control over your remote location from anywhere there is a telephone.

  • Page 8: Unpacking

    You program the voice synthesizer to give you only the information you need from every important monitoring channel. You may also program the VRC2000 to act on its own when certain conditions are Technical or Setup Assistance...

  • Page 9: Figure 2. Typical Vrc2000 Configuration

    VRC2000 installation in a radio broadcast facility: Figure 2. Typical This combination of power and flexibility allows you to use the VRC2000 in the VRC2000 configuration following situations: main transmitter remote control, automatic transmission system operation, backup transmitter remote control, engineering remote control, Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) •...

  • Page 10: Front-Panel Controls

    1. Power. The VRC2000 will operate with the AC input-voltage setting of 117Vac or 234Vac. POWER NOTE: You must verify that your VRC2000 is set to operate from the correct AC line voltage before plugging it in. See Initialization, Page 6.

  • Page 11: Remote/Local Modes

    SET jack, allowing use of the DTMF pad to key in programming tones to set up the VRC2000. In other words, in local mode, the VRC2000 can be programmed or operated directly, without connecting through a dial-up telephone line.

  • Page 12: Before You Install

    The VRC2000 will accommodate an AC-voltage input of 117Vac or 234Vac (manual switching required), 50–60Hz, 15W nominal. POWER NOTE: You must verify that your VRC2000 is set to operate from the correct AC line voltage before plugging it in. See Installation, below. Software Requirements Refer to your Setup VRC2000 Installation and Operations Manual or VRC- Win Installation and Operations Manual.

  • Page 13: Step 2 - Internal Lithium Battery

    Telephone Surge Protector will help limit such damage. VOLTAGE SURGE NOTE: Never disconnect or bypass surge protection for your VRC2000. Damage to your VRC2000 system caused by voltage surges is not covered under the terms of the Gentner warranty agreement (Page 92).

  • Page 14: Step 5 - Power Up

    (•) and printed in S . Numbers and phrases you MALL should send back to the VRC2000 with your DTMF keypad will be offset with a block ( ) and quotation marks (“ ”). With Audio Amplifier...

  • Page 15: Operational Modes

    CCESS Figure 9. VRC2000 front-panel controls This verifies that the VRC2000 is properly set up and ready to accept programming. If you have problems obtaining the correct responses from the VRC2000, check all of your connections, and try again. Do not proceed until your VRC2000 responds as noted above.

  • Page 16: Vrc2000 Setup

    Appendix H: Setup Worksheets (Page 117). The set-up process is fast and easy if you use the Setup VRC2000 software or VRC-Win software now available from Gentner Communications. These software packages will run on any 100-percent IBM-compatible PC that is equipped with a 100-percent Hayes-compatible modem.

  • Page 17: Vrc2000 Setup And User Modes

    VRC2000 responds to entries; practice initiating and completing a set-up event. Use local mode the first time the VRC2000 is set up. The set-up process will be easier if you connect an amplifier and speaker is connected to the AUDIO OUT BNC connector on the VRC2000’s rear panel.

  • Page 18: Changing Access Codes

    NTER YSTEM CCESS The VRC2000 will allow 10 seconds to completely enter the default system- access code (below) on the DTMF telephone pad: “1 2 3 4 5 6 7” If the correct sequence of numbers were entered, the VRC2000 will respond: •...
  • Page 19 YSTEM CCESS The VRC2000 is reporting, in order of priority, the access codes for all three security levels. The pause between the end of an access code and the [BEEP] is four seconds long. New access codes should be entered during that four- second pause.

  • Page 20: Internal Battery/Access Code Check

    3, 3, 3, 3, 3, 3, 3 ... [BEEP] YSTEM CCESS If the VRC2000 does not respond as indicated above, an error entering the new access codes may have been made. Go through the process (See Step 2, previous page.) again until the new access codes have been correctly entered.

  • Page 21: Turning The Vrc2000 Voice On/Off

    If the access codes are lost or forgotten, the only way to gain access to the VRC2000 is to remove the jumper on the internal lithium battery and unplug the VRC2000. This will erase all programmed functions and all parameters and functions will have to be reprogrammed.

  • Page 22: Toggling Between User And Setup Modes

    ERROR message. Changing the System Identifier The system identifier is the greeting the VRC2000 gives when a user signs on to the system; it can be customized, as long as it is composed of exactly 20 words.

  • Page 23: Table 1. System Identifier Word List

    This statement can be altered to include the station call letters or other words relevant to the facility. To change the system identifier, first sign on to the VRC2000 in the setup mode and enter the system access code. Then enter “0 8 0”...

  • Page 24: Setting The Clock

    Continued For maximum security, programming the system identifier solely with silences may be desirable. The use of silences in the system identifier will help make the VRC2000’s statements more understandable. Sixty DTMF tones, entered correctly, are required to program the VRC2000’s system identifier.

  • Page 25: Clock Setting Exercise

    VRC2000 REPORT NOTE: The VRC2000 will always report the time and date information already stored in the unit. Be sure to enter new information after the VRC2000 states the stored information, and before the [BEEP]. The double [BEEP] indicates that you have successfully entered new information.

  • Page 26: Telephone Interface

    ON. Dial-Tone Wait This allows the VRC2000 to be programmed to wait for a precision dial tone before beginning to dial an outbound number. Some older telephone systems, or some systems with poor quality lines, do not have reliable precision dial tone.

  • Page 27: Setting Up Outbound Telephone Numbers

    • [BEEP] [BEEP] NABLED VRC2000 REPORT NOTE: The VRC2000 will report the information already stored in the unit. Be sure to enter new information after the VRC2000 states the stored information, and before you hear a [BEEP]. The double [BEEP] indicates successfully entered new information.
  • Page 28 RADIO MODEM NOTE: The VRC2000 must be equipped with the Data Interface in order to use the radio modem output configuration. Radio Voice. This output configuration causes the VRC2000 to activate the push-to-talk output on the VRC2000, and use its electronic voice to transmit information about a pending alarm.
  • Page 29 LEASE ETURN This allows the VRC2000 to call you directly and request a call back, or the VRC2000 can call and leave this message on your answering machine. In either case, the VRC2000 will only leave a message; you cannot gain access to the system without returning the call and properly entering the appropriate access code.

  • Page 30: Telephone Number Programming Exercise

    HONE UMBER VRC2000 REPORT NOTE: The VRC2000 will report the information already stored in the unit. Be sure to enter new information after the VRC2000 states the stored information, and before you hear a [BEEP]. The double [BEEP] signal indicates successfully entered new information.

  • Page 31: Figure 12. Telephone Configuration Quick Reference

    RADIO/PHONE MODEM NOTE: The VRC2000 must be equipped with the Data Interface to use radio modem or phone modem output configuration. Also, if the outbound telephone number is programmed to use either the phone modem or radio modem output configuration, the VRC2000 will not ask you to enable (#”) or disable (“*”) the...

  • Page 32: Alarms

    This applies to all five outbound telephone numbers. Pager Number Programming Example Often, it is desirable for the VRC2000 to call a pager to report alarms. When programming the VRC2000 to call a pager, the “*” (two-second pause) is critical. See Table 5 (below).

  • Page 33: Programming Vrc2000 Alarm Delays And Channels

    Installation and Operations Manual Page 27 Alarm Storage The most recent 32 alarms are stored by the VRC2000 until they are cleared. If more than 32 alarms are activated, only the most recent 32 alarms are saved in the unit.
  • Page 34 Page 28 VRC2000 Installation and Operations Manual VRC2000 Setup be programmed to cause an alarm condition. The VRC2000 can also be Continued programmed to turn on a set of auxiliary lights if the main set failed. CHANNEL OVERLOAD NOTE: Be very careful not to overload status channels with excessive voltage or current.
  • Page 35 To disable an automatic command-channel assignment, program the VRC2000 with the digits “0 0” when setting up this parameter. The “0 0” command-channel assignment tells the VRC2000 that automatic commands should not be sent when this status-channel’s input goes low. Always use two digits when programming this parameter.
  • Page 36 Each command channel has two switches. If the VRC2000 is programmed to activate a command channel when a status channel is high, the VRC2000 will also ask you to select the switch to be activated for that command channel.

  • Page 37: Status Channel Programming Exercise

    [BEEP]. SINGLE BEEP NOTE: The VRC2000 will emit a single [BEEP] after a set-up parameter if you do not make a new entry. If you do make a new entry after a set-up parameter is stated by the VRC2000, the unit will [BEEP] twice.
  • Page 38 The unit has now been programmed to allow direct access to command channel 7 when status channel l is queried. When the VRC2000 has been accessed with the user access code, enter “*” to activate the A switch of command channel 7 when reading status channel l.
  • Page 39 “#” The VRC2000 will respond with a double [BEEP]. The alarm for status channel 1’s low input has not been enabled. The VRC2000 will activate an alarm condition when the state of status channel 1 switches closed. ENABLING ALARMS NOTE: When programming the VRC2000, enter a “#”...
  • Page 40 Installation and Operations Manual VRC2000 Setup ...{A} Continued Now enter a code that will tell the VRC2000 which switch on command channel 3 to automatically activate when status channel 1 goes low. You enter “#” The VRC2000 will respond with the double [BEEP].
  • Page 41 NPUT TATUS HANNEL ... {B} Now enter a code that will tell the VRC2000 which switch on command channel 4 to automatically activate when status channel 1 goes high. You enter “#” The VRC2000 will respond with a double [BEEP].

  • Page 42: Metering Channels

    Enter a “0” to program the VRC2000 to dial all five numbers entered in the outbound telephone number memory when it senses an alarm condition on a status channel.
  • Page 43 Power Readings. Metering channels defined as power readings mathematically square the input to the metering channel, then multiply the result by the calibration constant. The VRC2000 will say [P] to indicate a power configuration. Power readings automatically square the value of a metering channel’s input sample.

  • Page 44: Calibration Constant And Tolerance Limits

    1,000. Or program a calibration constant of 1, and change the units identifier to KILO VOLTS. Since the largest number that the VRC2000 can say is 9,999, use the best combination of the calibration constant and the units identifier; this will result in information being reported clearly.

  • Page 45: Setting Up Metering Channels

    VRC2000’s final programming parameters. Use the VRC2000 to access a specific metering channel’s set-up information. The VRC2000 begin list all available metering-channel functions. For each parameter, the VRC2000 will respond with a preprogrammed message, followed by the default parameter, followed by a [BEEP].
  • Page 46 To set up the VRC2000 to dial all of the telephone numbers in sequence, program this parameter with a “0”. To program this parameter to dial a single outbound telephone number, enter the single-digit number which corresponds to the number you want the VRC2000 to dial.
  • Page 47 HANNEL ISABLED ... [BEEP] The VRC2000 can be programmed to declare an alarm condition when the second low tolerance limit is passed on a metering channel. When programming the VRC2000, enter “#” to enable the alarm for this parameter; enter “*” to disable the alarm for this parameter.

  • Page 48: Table 8. Metering Channel Access Codes

    } ... LARM IRST IMIT ETERING HANNEL ISABLED Continued [BEEP] The VRC2000 can be programmed to declare an alarm condition when the first high tolerance limit is met on a metering channel. • S ... {N ECOND IMIT ETERING HANNEL HOUSAND } ...

  • Page 49: Metering Channel Programming Exercise

    [BEEP]. SINGLE BEEP NOTE: The VRC2000 will emit a single [BEEP] after a set-up parameter if you do not make a new entry. If you do make a new entry after a set-up parameter is stated by the VRC2000, the unit will [BEEP] twice.
  • Page 50 The VRC2000 will respond with a double [BEEP]. This metering channel is now programmed to read in linear values (as a result of entering “5”). The VRC2000 will say [I] to indicate the indirect configuration; entering a “4” will configure this metering channel for indirect readings.
  • Page 51 The default setting for this function is {Dial All}. To set up the VRC2000 to dial all of the telephone numbers in sequence, you program this parameter with a “0”. To program this parameter to dial a...
  • Page 52 ETERING HANNEL Since each command channel has two switches, now enter a code to instruct the VRC2000 whether to fire command channel 16’s A switch or the B switch when metering channel 1’s second low limit is passed. You enter “#”...
  • Page 53 The VRC2000 will now declare an alarm condition when the second low tolerance limit is met on this metering channel. When programming the VRC2000, enter a “#” to enable the alarm for this parameter; enter a “*” to disable the alarm.
  • Page 54 The VRC2000 will respond with a double [BEEP]. Continued The VRC2000 is now set to automatically fire command channel 15’s A switch when metering channel 1’s first low tolerance limit is passed. Entering “*” indicates A switch; “#” indicates the B switch.
  • Page 55 “#” The VRC2000 will respond with a double [BEEP]. The VRC2000 is now set to automatically fire command channel 16’s B switch when metering channel 1’s first high tolerance limit is passed. Entering “#” indicates the B switch; “*” indicates the A switch.

  • Page 56: Setting Up Command Channels

    Setting Up Command Channels The VRC2000 has 16 command channels which can turn equipment on or off, raise/lower power or voltage settings on site equipment, or anything else controllable through the open collector output switches on the VRC2000’s rear panel.
  • Page 57 OMMAND HANNEL CTIVATED [BEEP] Each command channel has two switches (A and B). The unit can be programmed to identify each switch with up to two words from the VRC2000 word list (Appendix H). • S {B A } ...

  • Page 58: Command Channel Programming Exercise

    VRC2000. SINGLE BEEP NOTE: The VRC2000 will emit a single [BEEP] after a set-up parameter if you do not make a new entry. If you do make a new entry after a set-up parameter is stated by the VRC2000, the unit will [BEEP] twice.
  • Page 59 Page 53 You enter “6 0 8 7 7 1” The VRC2000 will respond with a double [BEEP]. The VRC2000 will now say [PLATE VOLTAGE] when a command is issued to command channel l. The VRC2000 will say • C ...

  • Page 60: Setting Time-Of-Day Functions

    Give some thought to exactly how the command channels should interface with site equipment. Experiment before settling on final programming and interface scheme. At the same time, it is easy to change VRC2000 programming — setting parameters will not lock your site into a particular configuration.

  • Page 61: Entering Time/Date On Time-Of-Day Functions

    “3 6 3” “3 6 4” To program a time-of-day function, first enter the appropriate access code, then enter a “#”. Immediately after the VRC2000 responds, enter desired set- up information. Enter your information before the VRC2000 emits a single [BEEP].

  • Page 62: Time-Of-Day Function Programming Exercise

    The VRC2000 will emit only a single [BEEP] after a set-up parameter if you do not make a new entry. If you do make a new entry, the VRC2000 will [BEEP] twice.
  • Page 63 Time-of-day function entry one is now set to activate on a day in September. DATE VS. MONTH NOTE: The VRC2000’s word list does not contain the word “month.” Therefore, this parameter uses the word [DATE] to prompt and entry for what month a time-of- day function should activate.
  • Page 64 “0 4” The VRC2000 will respond with a double [BEEP]. When the VRC2000 executes time-of-day function entry one, it will now trigger command channel 4 at 6:30:45 p.m. on September 7. Always use two digits to enter the command channel number for a time-of-day function.

  • Page 65: Setting Up Mute Functions

    Setting Up Mute Functions The VRC2000 has 40 mute-function entries. Mute functions will disable all alarms and automatic commands associated with any status channel or metering channel. Mute functions can activated by any status channel. A mute function will disable itself when the status channel that is programmed to control the mute function changes back to its original state.

  • Page 66: Mute Function Programming Exercise

    VRC2000 emits a single [BEEP]. SINGLE BEEP NOTE: The VRC2000 will emit a single [BEEP] after a set-up parameter if you do not make a new entry. If you do make a new entry after a set-up parameter is stated by the VRC2000, the unit will [BEEP] twice.
  • Page 67 The VRC2000 will respond with a double [BEEP]. Mute-function entry one will now be activated by status channel 2 going low. The VRC2000 will use the words programmed to identify status channel 2’s low state. Enter a “*” symbol to program the mute function for the selected status channel’s low state.

  • Page 68: Setting Up Sequence Output Programs

    Setting Up Sequence Output Programs The VRC2000 allows four separate sequences (each consisting of up to 32 keystrokes), to be called up with simple sets of three DTMF entries. This mini-program, which can be replayed at any time with the proper code, works something like an automatic telephone dialer.

  • Page 69: Table 12. Sequence Output Programming Exercise

    All four sequence-output programs available on the VRC2000 are accessed for programming with the codes listed in Table 13 (below).

  • Page 70: Setting Up Auto-Logging Functions

    Setting Up Auto-Logging Functions If your VRC2000 is equipped with a Data Interface, the system can be set up to automatically dial an outbound telephone number (or key on a two-way radio system), turn on the Data Interface, and transmit all metering and...

  • Page 71: Auto-Logging Programming Exercise

    Auto-logging will now start at the fifth minute of the selected hour. The VRC2000 will say • T ... {AM} OGGING TART You enter “*” Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 72 You enter “0 1” The VRC2000 will respond with a double [BEEP]. The auto-logging function will now generate a new auto-log at least once every hour. Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 73: Clearing All Programming

    OGGING ISABLED DATA INTERFACE NOTE: A Data Interface must be installed in the VRC2000 in order to use the auto- logging function. Refer to the Data Interface Installation and Operations Manual, Setup VRC2000 Installation and Opertaions Manual and/or VRC-Win Installation and Operations Manual for more information about how to set up a control site to accept auto-logs from the VRC2000.

  • Page 74: Vrc2000 Installation

    SURGE PROTECTION NOTE: The VRC2000 is a sensitive electronic device. In order to avoid damage to your unit, always properly protect the VRC2000 from voltage surges over connected telephone lines and AC power lines.

  • Page 75: Step 2 - Metering Connections

    10Vdc (voltage reading) or -5–10mA (current reading). Step 3 — Determine Status-Channel Input Range When the VRC2000 takes status readings, the voltage sample is broken down into two categories, logic 1 (open) or logic 2 (closed). How the readings is broken down is determined by the sample itself: 0–.8Vdc = Logic 0 (closed)

  • Page 76: Step 4 - Status Connections

    -.2– 5.2Vdc. Step 5 — Command Connections The VRC2000’s 32 command-channel outputs are broken out into two DB37 connectors [10, 12] (See Figure 18, above.) to accommodate the 16 command channels, each with two output switches (A and B).

  • Page 77: Figure 20 Vrc2000 Command-Channel Input Schematic

    Command Relay Unit. Figure 21. VRC2000-to-Command Relay Unit electrical schematic For information about the Command Relay Unit, see Appendix C: Accessories (Page 100). Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 78: Step 6 - Telephone Interface Connection

    DTMF telephone into the SET jack [6]. SURGE PROTECTION NOTE: The VRC2000 is a sensitive electronic device. In order to avoid damage to the unit, always properly protect the VRC2000 from voltage surges over the telephone phone lines and connected AC power lines.

  • Page 79: Step 8 - Two-Way Radio Connection

    For electrical specifications, see Specifications (Page 90). The VRC2000 can be set up to always be online by programming the ring count to be zero. In the dedicated mode, send tones to the VRC2000 through the AUDIO IN port, and listen for responses through the AUDIO OUT port.

  • Page 80: Operation

    Installation is now complete. Operation DTMF tones operate the VRC2000, just as they were used to set it up. Using any DTMF telephone, the VRC2000 can be called to request readings on status and metering channels, issue commands to any of the command channels, check to see if there are any pending alarms, and/or clear the alarms.

  • Page 81: Single/Multiple Responses From Status/Metering Channels

    Then the unit will automatically hang up the telephone line. HANG-UP NOTE: The VRC2000 will also automatically hang up if no codes are entered for a period of five minutes (if the inactivity timer is enabled). Single/Multiple Responses From Status/Metering Channels Either single or multiple responses can be requested from status and metering channels.

  • Page 82: Issuing Commands

    Enter the five-digit user access code programmed into the VRC2000. ACCESS CODE NOTE: The VRC2000 will allow you to enter the code only once. If a mistake is made, the VRC2000 will automatically hang up. The VRC2000 will immediately report whether or not any alarms are pending.
  • Page 83 Installation and Operations Manual Page 77 “6 x x *” The VRC2000 will respond with the phrase set up for the metering channel, followed by the phrase set up for the actual current reading of the metering channel. Step 5 — Access Command Channel Access the command channel by entering the following code: “2 x x”...

  • Page 84: Remembering Vrc2000 Codes

    • G Then the unit will automatically hang up the telephone line. HANG-UP NOTE: The VRC2000 will also automatically hang up if no codes are entered for a period of five minutes (if the inactivity timer is enabled). Remembering VRC2000 Codes...
  • Page 85 LARMS ENDING If alarms are present, the VRC2000 will list causes of the alarm conditions, beginning with the oldest alarm stored in the system. After each alarm is reported, they can either be cleared or the alarm-reporting routine can be immediately exited.

  • Page 86: Checking Current Date And Time

    This clears all alarms. Be careful with this command, since alarms cannot be recalled once they have been cleared. If a “*” is entered during alarm reporting, the VRC2000 will stop reporting alarms, return to normal operation and wait for a command.

  • Page 87: Using The Sound Sensor

    VRC2000 to the PC equipped with a modem. “0 2 0 #” CODE NOTE: Do not use the “0 2 0 #” code if your VRC2000 is not equipped with the Data Interface. To turn the Data Interface OFF, enter “0 2 0 *”...

  • Page 88: Auto-Logging

    Operations Manual for information on how to install and use the Data Interface. Auto-Logging If your VRC2000 is equipped with the Data Interface, the system can be configured to automatically dial an outbound telephone number (or key on a two-way radio system’s PTT switch), turn on the Data Interface, and transmit all metering and status-channel readings to a PC running Setup VRC2000 software in terminal mode or VRC-Win software.

  • Page 89: Maintenance And Service

    Metering-System Failure Alarms. Metering-system failure system alarms can be generated by dirty AC power. Verify that the AC ripple on the analog supplies is less than 30mV if the VRC2000 reports these alarms. • Processor Preset Typical Readings...

  • Page 90: Figure 24. Receive Amplifier Schematic

    -20dBm, setting the maximum acceptable, nominal input level 0dBm, and the minimum -40dBm. This nominal level (-20dBm) is typically 1.5V p-p at pin 8 of U16C. If a VRC2000 has a DTMF level greater than this at U16C’s output, then either of the following simple changes can be made to adjust the receive window.

  • Page 91: Figure 25. Rfi Filter

    Page 85 necessary to raise R49 to 100kOhms if DTMF receive levels approach 2V peak-to-peak. If a VRC2000 has a low DTMF receive level, the voltage gain of U16B can be increased by decreasing the value of R49. • RFI Interference (Poor DTMF Decoding No Auto-Answer) Typical Reading/Finding U42 Pin 5 Pulses low during ring.

  • Page 92: Figure 26. Microphone Amplifier Schematic

    Continued The VRC2000’s built-in condenser microphone is very sensitive. If the VRC2000 is to operate in a noisy environment, a gain adjustment in the condenser-microphone circuit may be necessary. Attenuation of 24dB in the microphone’s output can be obtained by opening R35 to make U15C a voltage follower.

  • Page 93: Frequently Asked Questions

    Can I enter set-up mode from the remote site or take readings from local mode? Answer Yes. The DTMF tones “9 2 0” toggle the VRC2000 from local set-up mode to local-user mode for taking readings. The DTMF tones “9 1 0” toggle the unit from remote-user mode to remote set-up mode.
  • Page 94 Think of calibration constant in this manner: “What number must I multiply my sample by to equal my actual representation?” Question How long should I keep a status channel input low to assure VRC2000 detection? Answer At least one second. Question I need to monitor status conditions with a logic high greater than 5.2V.
  • Page 95 Gentner Communications Technical Support at one of the numbers listed at the bottom of the page. Gentner Communications maintains a stock of VRC2000 loaner units that are routinely provided to customers who need a remote control while their unit is away for repair.

  • Page 96: Specifications

    Standard BNC connectors Power Requirements 177Vac or 234Vac (manual switching required); 50–60Hz; 15W nominal Operating Temperature -20–70° C Specifications are subject to change without notice. Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 97: Firmware License

    This license shall remain in effect for the life of your VRC2000. You may terminate the license by returning the VRC2000 to Gentner in its original container, seal intact. This license is automatically terminated if you violate any of the terms and conditions of this license.

  • Page 98: Warranty

    Installation and Operations Manual Warranty Gentner Communications Corporation (Manufacturer) warrants that this product is free of defects in both materials and workmanship. Should any part of this equipment be defective, the Manufacturer agrees, at its option, to: A. Repair or replace any defective part free of charge (except transportation charges) for a period of one year from the date of the original purchase, provided the owner returns the equipment to the Manufacturer at the address set forth below.

  • Page 99: Fcc Part 68 Compliance

    No user serviceable parts are contained in this product. If damage or malfunction occurs, contact Gentner Communications for instructions on its repair or return.

  • Page 100: Appendix A: Glossary

    The delay can be set anywhere from 1–99 seconds. Auto-logging If your VRC2000 is equipped with a Data Interface, the system can be configured to automatically dial an outbound telephone number (or key on a two-way radio...
  • Page 101 Dual-tone multi-frequency (touch-tones by AT&T) for dialing on the phone system. FCC Registration Number The VRC2000 us registrered with the FCC, and is governed by FCC Rules and Regulations Part 68 regarding devices to be connected to the switched telephone network.
  • Page 102 Appendix A: Continued command-channel outputs. Message-Only Function The message-only function will allow the VRC2000 to call a number and only leave a message to return the call. Metering Channel The VRC2000 has 16 analog inputs called metering channels. What the VRC2000 says when reporting metering-channel readings is user programmable.
  • Page 103 Sequence-Output Programs The VRC2000 allows up to four separate sequences of up to 32 keystrokes (DTMF commands) to be programmed. These mini programs are stored in the unit and can be triggered with DTMF commands.

  • Page 104: Appendix B: Connector Pinouts

    The user access code allows tering and status-channel readings to be taken; commands can be issued, and alarms can be cleared. Voice Mode The VRC2000’s voice mode can be turned ON/OFF to help speed VRC2000 programming. VRC-Win Software This software is an intuititive point-and-click Windows® software package. See Appendix C: Accessories (Page 100).

  • Page 105: Table 16. Command 9-16 Pinout

    Metering 9 Metering 10 Metering 11 Metering 12 Metering 13 Metering 14 Metering 15 Metering 16 17–19 +5Vdc (220ohm current limited) 20–37 Ground (+/- volt reference) Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 106: Appendix C: Accessories

    Appendix C: Accessories allow you to customize your VRC2000 system to most effectively and efficiently meet your needs. The VRC2000 is supported by a complete line of accessories and options. For more information, contact Gentner Communcations. Software VRC-Win VRC-Win is designed to work with any 386 (with a math coprocessor), 486DX or better computer system.

  • Page 107: Hardware

    Gentner Part Number: 910-076-201 Silence Sensor Absolute carrier control is required by the FCC when the VRC2000 is used as the primary remote control system for a transmitter and is accessed via the telephone network. The Silence Sensor gives you absolute carrier control by monitoring the program audio feed to the transmitter.

  • Page 108: Appendix D: Theory Of Operation

    The unit uses CMOS integrated circuits to provide for low power consumption and minimal generation of internal heat. The VRC2000 consists of the following major building blocks: • MC146805 Microcontroller •...

  • Page 109: Microcontroller Theory

    MC146805 accesses 8K of memory but, by address decoding, the unit is able support additional ROM/RAM to allow for addressing the digital voice synthesizer’s word library. The chip-enable logic used in the VRC2000 is outlined in Table 19 (below). Table 19. VRC2000 Chip-Enable Logic...

  • Page 110: Telephone Logic And Interface

    In high RFI fields, additional protection may be required to eliminate demodulation by the bridge rectifier (BR2) of RFI present on the phone line. The VRC2000 can be set up to dial up to five telephone numbers when reporting alarm conditions. The telephone numbers are always dialed in sequence, one through five, with a 60-second pause between each number.

  • Page 111: Unbalanced Audio Output

    A section of the VRC2000’s memory map is dedicated to storing the condition of each status-channel input. This table is recalled when status channels are accessed via the appropriate DTMF tones.

  • Page 112: Command Channel Outputs

    (LBE), which allows the processor to read 10 bits of data for each metering channel, rather than the normal eight bits. Just like the status channels, the VRC2000 stores the data of all metering- channel inputs in memory for quick processing and easy access.

  • Page 113: Digital Voice Synthesizer

    800 words (library/vocabulary) accessible to the unit. Power Supply The VRC2000 was designed to operate on an AC line of either 117Vac or 234Vac. Selection of line voltage is accomplished by selecting the proper Molex connector, which ties the line cord to the VRC2000’s transformer.

  • Page 114: Appendix E: Technical Description

    (ATS) operation. The system’s internal Central Processing Unit (CPU) and memory circuitry allow the VRC2000 to be set up by the user to make decisions and take actions based on predetermined criteria, provide telemetry to the user, or to respond to commands directly.
  • Page 115 100kOhms. Status Channels The VRC2000 also contains 16 status-channel inputs. Each of these inputs has two conditions: the status-channel inputs are either high or low. Either state may be declared an alarm condition, and any status channel can be programmed to mute any metering or status channel.

  • Page 116: Appendix F: Remote/Local Tutorial

    ACCESS CODE NOTE: If the access code was entered incorrectly, the VRC2000 will stop supplying power to your telephone handset. The VRC2000 will allow you only one attempt to enter the proper access code. To re-enter the access code, press the LOCAL/ REMOTE button [3] to return to remote mode, then press the button again to attempt local connection again.
  • Page 117 LARMS ENDING ALARMS PENDING NOTE: No alarms are pending since the VRC2000 has not yet been set up for alarm reporting. Instructions for setting up alarms are covered in VRC2000 Setup (Page 10). If the VRC2000 reports an alarm at this point, make a note of exactly what the unit says.
  • Page 118 If you enter an invalid command, the VRC2000 will respond with the ERROR message. VOICE BUFFER NOTE: The VRC2000’s electronic voice buffer can hold only 128 words. If the voice buffer is filled beyond this capacity, some of the words will not be reported. All commands, however, will be executed.

  • Page 119: Remote Mode

    (Step 2, Page 7). The VRC2000 responds to the same commands in the remote mode as it does in the local mode. Try some of the commands now that you tried earlier in the local mode.

  • Page 120: Appendix G: Time-Of-Day Function Tutorial

    Entering the “*” symbol will disable that time-of-day function. The VRC2000 will report only a single [BEEP] after a set-up parameter if you do not make a new entry. If you do make a new entry, the VRC2000 will [BEEP] twice.
  • Page 121 Time-of-day function three will now activate every day during the month of November at 11:59:01 p.m. The “0 0” entry for this parameter programs the VRC2000 to activate the selected command-channel switch every day for the programmed month at the programmed time.

  • Page 122: Exercise 3

    Repeating the same steps listed above, but use the disable code “0” for the day-of-the-week function. This will cause this time-of-day function to activate daily. Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 123: Appendix H: Setup Worksheets

    0–9 Rings (Default is {2}) Inactivity Timer is ... _____ ( “*” = Disabled, “#” = Enabled) Dial-Tone Wait is ... _____ ( “*” = Disabled, “#” = Enabled) Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 124: Worksheet 4: System Identifier Setup

    Default {1 2 3 4 5} _____ _____ _____ _____ _____ System Access Default {1 2 3 4 5 6 7} _____ _____ _____ _____ _____ _____ _____ Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 125: Worksheet 6: Outbound Telephone Numbers

    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 126: Worksheet 8: Time-Of-Day Functions Setup

    _____ _____ _____ _____ _____ _____ _____ xx = function number (01–64); y = suffix (* = Disable, # = Enable) Make copies as necessary. Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 127: Worksheet 9: Mute Assignments

    _____ _____ _____ _____ _____ _____ _____ xx = function number (01–64); y = suffix (* = Disable, # = Enable) Make copies as necessary. Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 128: Worksheet 10: Command Channel Setup

    Page 122 VRC2000 Installation and Operations Manual Appendix H: Continued Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 129: Worksheet 11: Metering Channel Setup

    VRC2000 Installation and Operations Manual Page 123 Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 130: Worksheet 12: Status Channel Setup

    Page 124 VRC2000 Installation and Operations Manual Appendix H: Continued Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 131: Appendix I: Word List

    -s (“ez”) ninety pico- silver -uth nano- turquoise a- (“a”) micro- violet a- (short-”uh”) milli- white a- (“uh”) centi- yellow kilo- dis- mega- in- (short) Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 132 Celsius decimal attention center decrease energy audio centigrade default engage Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 133 Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 134 Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

  • Page 135: Appendix J: Schematics

    VRC2000 Installation and Operations Manual Page 129 Appendix J: Schematics Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 136 Page 130 VRC2000 Installation and Operations Manual Appendix J: Continued Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 137 VRC2000 Installation and Operations Manual Page 131 Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 138 Page 132 VRC2000 Installation and Operations Manual Appendix J: Continued Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 139 VRC2000 Installation and Operations Manual Page 133 Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...
  • Page 140 Page 134 VRC2000 Installation and Operations Manual VRC2000 Notes Technical or Setup Assistance Telephone: 800.945.7730 (USA) or 801.975.7200 (worldwide) • Worldwide Web @ http://www.gentner.com...

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