Print Friendly, PDF & Email


In this Troubleshooting section, we cover problems dealing mainly with interfacing the Chaparral M100C, Data Translator, and PC Controller Software. If you are having trouble with your Monterey 100C receiver that does not relate to Data Translator or PC Controller Software, please check our Monterey Receiver Troubleshooting section.

Problems unique to the M100C, but not involving PC or Data


Monterey 100C specifications.

(only the most frequently requested or specs that are not found

in the manual — for other specs, refer to the owner’s manual, inside

back cover)

input VSWR- 2:1 typical, 3:1 max.

Noise figure-12dB typical, 15db max.



Instructions for receiver settings when using BMAC decoder.

  1. Access MENU 6
  3. Go to CONFIGURE: INPUT 1, press ENTER, set “type”as A\V LOOP
  4. Access MENU 7
  5. Select desired sat. and chan. and in the SOURCE field, selectINPUT 1.


Baseband output specifications. BB (Menu 6, Baseband:)

BB output Descrambler Type Output Decoders
DE-EMPHASIZED A de-emphasized, unclamped, unfiltered VCII, Oak
EMPHASIZED B emphasized, unclamped, unfiltered B-MAC
UNCLAMPED C de-emphasized, unclamped, filtered
UNCLAMPED D de-emphasized, clamped, filtered

M100C shuts off intermittently or shuts off when a timer event is supposed to run.

This may occur if the timer events are set back to back (not allowing one minute between events). This is usually the case and there is currently no fix for this.

NOTE: According to the instructions, there is supposed to be one minute between events. The 100C may run fine for months at a time with the events set consecutively, but there will eventually be a glitch.

When using Timer Events, the record output is not switching to the correct source.
In older versions of software, the source for the record output switches to the default (Monterey) if the timer event starts when the receiver is in Standby. This was actually done by design so that there would not be any confusion in what the record output source is when the receiver is first turned on. We later changed this preference to allow for more unattended recording operations for out large network customers. If you have the older software and wish to use timers to record events from external sources, you will have leave the receiver on all of the time. Software updates are available at this time which will correct this problem.

The external input source always switches back to Monterey when you cycle the receiver power.

  • If a timer event occurs while the receiver is in STANDBY, the source will default to Monterey.
  • If the channel is selected using FAVORITE command, the source will default to Monterey.
  • Simply turning the M100 off and back on while you are on the channel.

If you have a channel set up for SOURCE-Input 1, and it does not switch to the correct input, simply change channels and go back to the desired channel. If it still does not switch, check the “Source” in Menu 7.

* Changing the channel up or down, then returning to the desired channel will cause the SOURCE to switch back to the one selected in MENU 7.

Auto tune polarity does not work when the M100C is in the network mode. Auto tune will not work when a receiver is in the “REMOTE” or “NETWORK” mode; they do not have full time control of their own CPU– the “MAIN” unit interrupts when it polls the “REMOTE” or “NETWORK” receiver and takes control of the data bus; therefore an autotune command function cannot normally be completed.

Certain SCPC receivers hooked to the M100C through the I.F. loop has an audio buzz. This has been researched by Engineering and concluded that it cannot be changed. The problem is inherent in the design of how the tuner and front end signal processing work. The receiver was not designed to use the narrow bandwidths required for SCPC receivers of this type. Total redesign would be the only solution and that will not happen in the Monterey.

Using PC Controller Software

PC requirements, software and hardware, for the Monterey 100C PC Controller Software

  • To use PC Controller software you must be using an IBM or compatible PC running DOS 2.1 or higher.
  • You must have a minimum of 640K RAM and any configuration of single or dual floppy disk drives or a hard disk.
  • You may use MONO or COLOR monitors.
  • If the computer is to be connected to the receiver via a modem, the modem at the computer site must be set to 1200 baud. The modem must be a Hayes compatible.

How much RAM does the PC controller use?The Minimum RAM “used” is 320K, but to run the program, you must have 640K RAM available.

Satellite indicated in the F1 window is displayed “G x”.This indicates that the PC Controller program has not yet received an update from the M100C.The user should either press F5 for a refresh or wait for the auto-refresh.

When sending timer event to 100c, the day always displays SUN(Sunday) no matter what date has been set.This is caused by a default 0 value which is buried in the code–thus if no value is given for the day, it will display SUN–No problems will result from this, the correct data will be sent to the receiver as long as the date is correct. Software Eng. was unable to remove this from the program.

The word “FEEDBACK” is displayed constantly in the F3 window. The command history list in the F3 Window and the history file of commands, comes out with several pages of “FEEDBACK.”This is the same response that is displayed on the screen when you execute the F5 (refresh) command. The reason it appears over and over is that the PC Controller software automatically asks for a refresh about every 20 seconds. This feature may NOT be disabled.

PC controller program message “Waiting for feedback…” stays on the screen.Continuous “Waiting for feedback…” message means that you have lost modem communications with the receiver and can no longer send commands. Restart the computer and re-establish modem communications. If you still get “Waiting for feedback…” message, type “version” in the F3 command window. If you get feedback that gives the version of the Data Translator software,it means that you are still connected to the Data Translator’s modem. You need to go to the receiver site and make sure that the Data Translator and receiver are still communicating; this comm. is indicated by the green light on the Data Translator flashing continuously.

Not communicating, only half of the numbers roll.The numbers on the left indicate communication from the PC to the 100c. The numbers on the right indicate comm. from the 100c to the PC. If either set of numbers is not rolling, then that comm. is not being seen by the PC controller program. These numbers only appear at the upper left corner of the screen if the PC Cont. program is configured in Serial Config. as MONTEREY NETWORK.

“Not communicating” message on the screen. Steps to take:

  1. Check Data Link cable connections.
  2. Cycle receiver power
  3. Try changing RJ11 connection on receiver from input to output(or from output to input), cycle the receiver power. Refer to diagrams in PC Controller User’s Manual for correct connection.
  4. COM1 port in Serial Configuration must be set to MONTEREY NETWORK
  5. COM1 modem must be set to INACTIVE.
  6. COM2 Port must be INACTIVE in this configuration.
  7. What is the length of the Data Link Cable? If it is over 10 ft. you should be using shielded cable.

Receiver does not respond to commands.Check for green light on data Translator. The light must be flashing. If not flashing, check data link connection between Data Translator RJ11 jack labeled M100 and the receiver RJ11 data link input. If light does not blink, change RJ11 data link input to output and cycle the receiver power.

Garbage characters appear on screen after communication has been established.Check the serial configuration, make sure that communication settings are correct.

PC is communicating, but has trouble executing commands or the wrong command is being sent. Also may be sending commands by itself.There is probably a TSR running on the PC that is interfering with the communications. It also can be caused by an unshielded cable that is picking up noise or too long of a cable run from the PC to the receiver or Data Translator.

Tips on long data link cable runs. (over 20ft.)

  1. We don’t recommend any data link cable runs over 50ft.; this is the maximum length specified.
  2. Data link runs of more than 10 ft. may require a shielded cable. If there is a comm. problem and you have already checked for all problems under COM.NO, customer may need to use shielded wire (preferably w\drain wire)
  3. Cable runs of over 50 ft. are possible if the total line capacitance is less than 2500pf. Customer will have to refer to the specification for the cable that they are using.

Data Translator & PC

Internal modem is on COM3, can the serial configuration be changed to use something besides COM1 or COM2.

NO– This is simply a limitation of the software. If you have the PC connected directly to the 100C, you MUST be using COM1 and it must be configured as “Monterey Network”. If you are using a PC and modem, you can use COM 1 or 2 and they would have to be configured as “Remote Driver”.

PC locks up after starting the PC controller program.Check “Serial Configuration” for proper settings. If the data cable is connected directly to the receiver, and the serial config. is set to REMOTE DRIVER, then the data from the receiver causes a lock up. Disconnect the data link cable and reconfigure serial ports properly for your system type.

Computer(PC) is not connecting to local modem.

  1. Check to see if the modem is turned on.
  2. Make sure RS232 COM1 or COM2 port on your computer is connected to your modem.
  3. In the Serial Configuration Menu, the settings for the Com Port must be set to REMOTE DRIVER, and Modem set to ACTIVE. Press “Enter” to set, press F8 to save settings.
  4. PC Controller requires “numeric” result codes from the modem. Check the modem configuration to make the modem is outputting result codes in “numeric” format, not “verbal” format.

M100C is not communicating with a data translator.

  1. Green light on Data Translator is not flashing or only flashes about once every 10 to 15 seconds. The problem is most likely a bad diode on one of the data ports on the back of the receiver.
  2. Replace diode D186 (1SS133) which may have been shorted to ground when data in voltage went to high. Normally this is a result of plugging an analog Telco (phone) line to one of the data ports on the back of the receiver.

Data Translator does not answer within two rings.

  1. Ensure the RJ11 jack on back of Data Translator labeled “line” is connected to telephone line.
  2. Toggle switch on Data Translator must be set to MODEM. Set it correctly and cycle the power on the Data Trans (that means unplug from power source and plug it back in)

Modem connects, but will not ask for a password or asks for password and will not accept it. Sometimes random characters appear on the screen.Check to see if you have any TSR’s running on the PC while trying to run the M100C PC Controller software, the TSR can interrupt the communications to the satellite receiver or modem. To check for TSR’s, go to the C:/ prompt and type MSD. A diagnostic screen will come up on your computer; one of the options is TSR programs….check this to see what TSR’s may be running. If you have any of these programs running, you may need to set up your computer so that they do not run while using the PC Controller Software.

Data Translator does not accept password–Asks 3 times, says “incorrect…bye”

  • This tells us that the password has been changed. Unit needs to be hooked up to a PC directly; set to computer mode; usePCplus or F3 window in PCcontroller and type B 4 F Z (return); the DT will prompt you “D, N or P?”; type P(return) and the password will be set to “CHAPARRAL”
  • The other way to do it, is to type “password” and the unit will ask you to enter the new password; you enter the password, then confirm it when prompted.

* Both methods of resetting the password must be done with a PC connected directly to the data translator.

Data Translator’s modem connects, but will not ask for a password.

  • A character, either from the PC or phone line, is seen by the modem and is interpreted as a command to shut down communications to the UART.
  • Solution: Use terminal emulator software (i.e. ProcommPlus) to connect to modem, and give CTL+Q command. This should initiate a reset in the modem and DT. Normally indicated by +++ msg. received by the remote PC. After the reset, you should be able to redial the DT and make a successful connection.

NOTE 5/5/93: The CTL+Q command was removed from the Data Translator’s command list. In software versions 2.1 and above. Try sending a “reset” command. To do so, simply try typing reset as soon as you get a connection Reset command is done by typing “reset” from the F3 menu.. If that does not work, you must go to the site where the Data Translator is located and unplug it from AC power, then plug it back in to do the reset.

Modem connects, but will not ask for a password or asks for password and will not accept it. Sometimes random characters appear on the screen.

  • Are you using a high speed (9600 fax\modem or any modem 14.4 or faster)? If so, the problem is most likely being caused by the automatic error correction and speed negotiation being done by the modem. Our software is not sophisticated enough to handle it, so these features must be turned off in your modem. This is done by typing an AT command in the F3 window in the PC Controller Software or by using another communications software (i.e. Procom Plus) that is set up with an initialization string that will turn off the error correction and compression features of the modem.
  • We have found that one of the most common commands to turn off the auto error control is AT &Q0. This has been used successfully on several different brands of modems. If this does not work, refer to the list below for more specific information.

Practical Peripherals Error correction and data compression modems:

  • PM 14400FXSA AT &Q0 S46=0
  • PM 14400FXMT AT &Q0 S46=0
  • PM 14400FXHC AT &Q0 S46=0
  • PM 9600FXMT AT &Q0 S46=0
  • PM 9600FXHC AT &Q0 S46=0
  • PM 2400EFXSA AT &Q0 S46=0
  • PM 2400EFXHC AT &Q0 S46=0
  • PM 9600SA AT &Q0 S46=136
  • PM 9600HC AT &Q0 S46=136
  • Telebit “World Blazer”
    T3000 AT S180=0
  • Hayes 2400 “OPTIMA” Not Compatible with PC Controller

Specifications for data link and modem communications FACTORY MODEM CONFIG.-Data Translator

  • 1200 BPS
  • Even parity
  • Auto answer enabled
  • Command Echo ON
  • Ring count=2
  • COMM PROGRAM CONFIG.- using program other than PC Controller by Chaparral
  • Full duplex
  • Hardware flow control Off- XOFF
  • 1200 Baud
  • No parity
  • 8 bit
  • 1 stop bit

Specifications, Reference Data specifications for the Data Translator

  • Phone line connection– USOC RJ-11C (or USOC FJ45S) standard jack
  • Ringer Equivalence Number (REN) — REN is .2
  • Function: To translate standard ASCII character set from the PC to the unique 9-bit protocol used by the external control bus of the M100C receiver.
  • Baud Rate: 1200BPS
  • Power input: 9V DC, (center conductor is + (pos))
  • Computer Connector:Male DB-25 connects to computer’s RS-232 serial port.
  • Printer Connector: Female DB-25 parallel port.

Error messages that may occur while using the Data Translator.

  • Character Out of Range Invalid character. Re-enter a correct character.
  • Excess Length Length of a text message is too long. You can type a maximum of 24 characters per line of text in a message.
  • Incorrect Frequency Frequency value incorrect or out of range. Re-enter a valid frequency value.
  • No ACK or NAK received . Xmodem handshaking incorrectly during DB x-fer.
  • Not a Digit Out of 0-9 range.
  • Not a String Not a valid text string.
  • Not a Volume String # Character A Volume command # is typed incorrectly.
  • Must be a number between 0 and 31.

Instructions & Procedures

Instructions for establishing communications using other comm. software or dumb terminal (Start up from local PC at receiver site).

  • Start the computer and open the communications program. (terminal emulator settings: FDX, N-8-1, ANSI, VT100, 1200 baud)
  • If you are NOT using 100C PC Controller type “EM” and press enter. (This command instructs the Data Translator to echo commands to the computer.)
  • If using the PC Controller program, press the F1 key to select the F1 menu, move the highlight to the Unit field and enter the unit number for the receiver you wish to communicate with. If using another Communications program, type “Unit (n)” to direct commands to the desired receiver. You may then use any of the commands from the ASCII Command List in the Data Translator users manual.

Start up from a remote computer, using a modem.

  • Start the computer and open the communications program.
  • Dial the Data Translator. The DT should answer after 2 rings.
  • When it asks for a password, type CHAPARRAL (must be all caps), then press Enter.
  • “Welcome to Monterey Network” message will be displayed.
  • If using the PC Controller program, press the F1 key to select the F1 menu, move the highlight to the Unit field and enter the unit number for the receiver you wish to communicate with. If using another communications program, type “Unit (n)” to direct commands to the desired receiver. You may then use any of the commands from the ASCII Command List in the DT users manual.

Can an Apple Macintosh computer be used to communicate with the M100C?The MAC can be used if it is connected through the Chaparral Data Translator. LINK to instructions on establishing communications using the Data Translator.

Data Base Transfer, saving a DB to a file.

  • After you have established communications, select the F3 window (keyboard entry).
  • Type “getdb(space)filename.ext(enter)”

This file will now be saved on the current drive and directory.

To “Send” a data base from disk to receiver:

  • After you have established communications, select the F3 window (keyboard entry).
  • Type “senddb(space)filename.ext(enter)”

The saved file will be uploaded to the receivers memory.

CAUTION: Please note that all information will be uploaded, including dish positions and limits. If the saved data base is not for the system that you are uploading it to, you may need to realign the dish. There is a danger of overdriving and damaging the dish and\or actuator if you are using a saved file from a different system.

Setting Limits using the PC Controller software.You can set the limits using the PC, but you must know what the numbers are and you must be on a satellite that was at dish position 5000 at the time that the limits were recorded. We STRONGLY recommend that the limits be set using the remote control.

Changing macros — How to change or add macros.

  • Macros must be changed by editing the file using an editor program. You edit the files in the C100MACS subdirectory. If the customer is not familiar with this type of editing, suggest that he find someone more familiar with PC’s to assist. The syntax is very important when defining a macro file; they should enter a new macro in exactly the same form that other macros are listed.
  • In the F2 menu:Modem Dialer\Macro execution there are 10 macros that can be programmed in the display. These are just the macros that can be in the display—You can have other macros listed but they must be executed from the F3 window by typing “macro cnn” for example. FOR MORE INFO, REFER TO THE MANUAL.
  • PC, Data Translator & M100C hook up configurations reference chart configuration for PC connected directly to M100C.
  • Maximum length of data link data link cable should not be greater than 40ft. If the distance is more than 10ft, shielded cable is recommended.
  • PC—-100C
  • Comm1: Mont. Network Comm2:Inactive
  • Modem: Inactive Modem:Inactive
  • Config Mont: Standalone

config– PC w\modem from remote site to DT w\modem at receiver site.Note: Maximum distance recommended between each piece of equipment is 40ft. If the distance is over 10ft, shielded cable is probably needed.

  • pc–mdm—-\\—-dt–100c
  • F2: Serial Configuration
  • Comm1: Remote Driver Comm2:Inactive
  • Modem: Active Modem:Inactive
  • Config Mont:#1-Main
  • #2-remote/network
  • #3-remote/network

* Any M100C connected to the Data Translator MUST be configured as “MAIN.”.

config–PC w\modem from remote site to PC w\modem at receiver site. Maximum distance recommended between each piece of equipment is 40ft. If the distance is over 10ft, shielded cable is probably needed.

  • pc–mdm—-\\—-mdm–pc–100C
  • F2: Serial Configuration\remote site.
  • Comm1: Remote Driver Comm2:Inactive
  • Comm1Modem: Active Comm2Modem: Inactive
  • F2: Serial Config.\receiver site
  • Comm1: Mont. Network Comm2: ASCII
  • Comm1Modem: Inactive Comm2 Modem: Active
  • Config Mont:#1-Main
  • #2-remote/network
  • #3-remote/network

Configuration for PC connection to a Data Translator to M100C. Maximum distance recommended between each piece of equipment is 40ft. If the distance is over 10ft, shielded cable is probably needed.

  • PC—–DT——100C
  • F2: Serial Configuration
  • Comm1: Remote Driver Comm2:Inactive
  • Comm1Modem: Inactive Comm2Modem:Inactive
  • Config Mont:#1-Main
  • #2-remote/network
  • #3-remote/network

* Any M100C connected to the Data Translator MUST be configured as “MAIN.”.

Configuration of Multi receiver installation with main, remote, and network receivers in the same system. Maximum distance recommended between each piece of equipment is 40ft. If the distance is over 10ft, shielded cable is probably needed.

  • The M100C that is connected directly to a DT or PC must be configured as a MAIN in any multi receiver application.
  • REMOTE and NETWORK receivers can be used in the same system, but there can only be one MAIN receiver and all REMOTE receivers communicate only to the MAIN. *A NETWORK receiver cannot have it’s own REMOTE receivers.

*** If the PC is connected directly to the receiver, it would normally hook to data link “Output” connector- the data link “Input” of the MAIN unit then connects to the “Input” of the first NETWORK or REMOTE unit. Other REMOTE or NETWORK units data link cables connect from “Output” to “Input”

*** If the DT is used, the data link cable goes to the “Input” of the MAIN unit and the first receivers are then connected “Output” to “Output”, other REMOTE or NETWORK units connect “Input” to “Output”.

Receiver locks up when setting up a multi-receiver application. (regardless of using PC or not)

  1. Disconnect the data link cables, write down the dish position for the limits and each satellite in the main receiver. If the main receiver needs to be reprogrammed, follow the instructions in the receiver manual, then see #2 in this window.
  2. You must use the following instructions for:

Programming the Main receiver

select Menu 6
select “Configure Monterey”, press “Enter”
set unit number (0-9)
select system type “Main”
turn receiver off

Programming the Remote\Network receivers

select Menu 6
select “Configure Monterey”, press “Enter”
set unit number(s)(0-9)
select system type “Remote” or “Network”
turn Receiver Power off
connect data link cables
turn receiver power on