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Miteq 9400 Series Manual

Modulation upconverter
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Technical Notes
25T024
Local/Remote Control,
9400 Series Modulation Upconverter
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Communication
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  • Page 1 Back to Communication Communication Products Group Products Group Technical Notes 25T024 Local/Remote Control, 9400 Series Modulation Upconverter...

  • Page 2: Local/Remote Control

    The cursor is present only in the Local mode. 2.1 FRONT PANEL CONTROLS The front panel of the 9400 Series Modulation Upconverter is divided into the functional groups shown in Figure 1. Figure 1. Front Panel, 9400 Series Modulation Upconverter...
  • Page 3 2.2 FREQUENCY To set the frequency of the converter: A. Using the ‘ FUNCTION SELECT” key, locate the cursor in the frequency field. B. With the cursor in the frequency field enter the desired frequency (in MHz) using the numbered keys and the decimal point. C.

  • Page 4: Channel Memory

    2.6 OUTPUT DEVIATION To set the output deviation of the converter: A. Using the "FUNCTION SELECT" key, locate the cursor in the deviation field. B. Enter the desired output deviation (in kHz) using the numbered keys and the decimal point. C.

  • Page 5: Alarm Status

    To recall a setup from memory: A. Press "RCL". B. Enter the memory number using the numbered keys (two digits). The cursor will be in the setup field during this key sequence. The stored values will appear in their respective fields in the display. C.

  • Page 6: Contrast Adjust

    2.10 LOCAL MUTE FUNCTION To mute the converter (if applicable): A. Press "STR" and enter the digits "99" using the numbered keys. The word "MUTED" will appear in place of the attenuation setting. To unmute the converter (if applicable): A. Press "RCL" and enter the digits "99" using the numbered keys. The attenuation setting will reappear in place of "MUTED"...

  • Page 7: Address Selection

    To change the remote communication format: A. Hold down the "FORMAT" key during power-up of the converter. B. Use the arrow keys to vary each parameter and the "ENT" to set each parameter. C. To resume normal operation cycle the converter power off and on. 3.1 REMOTE OPERATION 3.1.1 DEVICE ADDRESS/BAUD RATE/PARITY SELECTION To change the remote communication format:...

  • Page 8: Data Transfer

    3.2 RS422/485/232 PROTOCOL All transmissions are multi-byte sequences beginning with a header byte, and ending with a trailer byte and checksum byte. The transmitted bytes are all ASCII printable characters in the range of 20H to 7AH. Data transmission format is a 10 bit sequence consisting of 1 Start, 7 Data, 1 Parity and 1 Stop bit.

  • Page 9: Command/Error Codes

    3.2.1.3 COMMAND/ERROR CODES COMMAND CODES ASCII Code Character Function Frequency Set Attenuation Set Memory Store Memory Store and Set Memory Recall Memory Recall and Set Mute Unmute Status All Status Faults Combination Command Deviation Set Mod. Type Set Mod. Rate Set ERROR CODES ASCII Code...

  • Page 10: Parameter Bytes

    3.2.1.4 PARAMETER BYTES Parameters are numeric characters which are sent MSD first, LSD last. Non-numeric parameters such as ",", "." or values beyond the range of the converter will be rejected and cause the converter to respond with error code "b". 3.2.1.5 TRAILER BYTE The Trailer byte is 7DH, ASCII character "}".

  • Page 11: Status All Code = A

    3.2.2.3 STATUS ALL CODE = A The Status All command requires no parameters. The converter responds in both Local and Remote mode with the converter frequency, attenuation, remote/local status, IF selection, mute status, modulation type, modulation rate, output deviation and component fault status. Remote Command: A Converter Response: AFfffffff(f)TtttLlIiMmWwXxxxxxVvvvvv?abcdefg A: Status All indicator...
  • Page 12 ?: Component Fault Status indicator 0 = No fault 1 = Fault a through g indicate the status of the seven component fault lines. 3.2.2.4 STATUS FAULTS CODE = ? The Status Faults command requires no parameters. The converter responds in both Local and Remote mode with the component fault status.
  • Page 13 3.2.2.7 STORE CODE = E The Store command stores the specified frequency, attenuation, IF selection, modulation waveform type, modulation rate and output deviation stored in the selected memory location. The actual setting of the converter is not changed. Remote Command Sequence: EnnFfffffff(f)TtttIiWwXxxxxxVvvvvv Converter Response: E E: Store indicator nn: Two digit ASCII numeric character indicating a memory location.
  • Page 14 3.2.2.8 STORE AND SET CODE = S The Store and Set command performs the same function as the Store command, and also sets the converter to the specified frequency, attenuation, IF selection, modulation waveform type, modulation rate and output deviation. The converter mute status is not affected. Remote Command Sequence: SnnFfffffff(f)TtttIiWwXxxxxxVvvvvv Converter Response: S S: Store and Set indicator...
  • Page 15 3.2.2.9 RECALL CODE = L The Recall command returns the frequency, attenuation, IF selection, modulation waveform type, modulation rate and output deviation stored in the selected memory location. The actual setting of the converter is not changed. Remote Command Sequence: Lnn Converter Response: LnnFfffffff(f)TtttIiWwXxxxxxVvvvvv L: Recall indicator nn: Two digit ASCII numeric character indicating a memory location.
  • Page 16 3.2.2.10 RECALL AND SET CODE = R The Recall and Set command performs the same function as the Recall command and also sets the converter to the specified frequency, attenuation, IF selection, modulation waveform type, modulation rate and output deviation. The converter mute status is not affected. Remote Command Sequence: Rnn Converter Response: RnnFfffffff(f)TtttIiWwXxxxxxVvvvvv R: Recall indicator...
  • Page 17 3.2.2.11 COMBINATION SET CODE = C The Combination Set command sets the frequency, attenuation, modulation waveform type, modulation rate and output deviation with one command. The converter mute status is not affected. Remote Command Sequence: CFfffffff(f)TtttWwXxxxxxVvvvvv Converter Response: C C: Combination Command indicator F: Frequency indicator fffffff(f): Seven or eight digit frequency T: Attenuation indicator...

  • Page 18: Programming Examples

    3.2.2.13 MODULATION WAVEFORM TYPE CODE = W The Modulation Waveform Type command requires a single parameter which sets the modulation waveform type of the converter. The converter is immediately set to the requested waveform type. Remote Command Sequence: Ww Converter Response: W W: Modulation Waveform Type Indicator w: "0", "1"...

  • Page 19: Contact Closure Control

    3.4 IEEE-488 CONTROL The 9400 Series Converter performs the basic Talker and Listener functions as specified in IEEE Standard 488. It is also capable of sending a Service Request to the IEEE-488 Controller and will respond with a status word when the Serial Poll Enable message is received.

  • Page 20: Frequency Set

    3.4.1 DEVICE ADDRESS/SERVICE REQUEST ENABLE To change the device address, hold down the "FORMAT" key during power-up of the converter. Use the arrow keys to scroll through available addresses and the "ENT" to set the address. Use the arrow keys to toggle Enable/Disable of the Service Request feature. To resume normal operation cycle the converter power.

  • Page 21: Data Format

    3.4.2.4 RECALL FREQUENCY, ATTENUATION MODULATION WAVEFORM TYPE, MODULATION RATE AND OUTPUT DEVIATION FROM CHANNEL NN This message sets the converter to the frequency, attenuation, modulation waveform type, modulation rate and output deviation selection previously stored in channel memory "nn". The converter mute status is not affected.

  • Page 22: Status Faults Format

    V: Output Deviation vvvvv: Deviation vvvv.v in kHz (decimal point omitted). 3.4.2.7 STATUS FAULTS FORMAT Data Format Converter Response ?abcdefg ?: Status indicator a-g: 0 = no fault, 1 = fault a through g indicate the status of the seven component fault lines. Synthesizer Alarm LOA Alarm LOB Alarm...
  • Page 23 3.4.2.11 STORE The Store message stores the specified frequency, attenuation, modulation waveform type, modulation rate and output deviation selection in the selected memory location. The actual converter settings are not changed. EnnFfffffff(f)TtttIiWwXxxxxxVvvvvv E: Store indicator nn: Two digit ASCII numeric character indicating a memory location. MSD transmitted first, LSD last.
  • Page 24 3.4.2.12 STORE AND SET The Store and Set command performs the same function as the Store command and also sets the converter to the specified frequency, attenuation, modulation waveform type, modulation rate and output deviation selection. The converter mute status is not affected. SnnFfffffff(f)TtttIiWwXxxxxxVvvvvv S: Store and Set indicator nn: Two digit ASCII numeric character indicating a memory location.
  • Page 25 3.4.2.13 COMBINATION SET CODE = C The Combination Set command sets the frequency, attenuation, modulation waveform type, modulation rate and output deviation with one command. The converter mute status is not affected. Remote Command Sequence: CFfffffff(f)TtttWwXxxxxxVvvvvv C: Combination Command indicator F: Frequency indicator fffffff(f): Seven or eight digit frequency T: Attenuation indicator...

  • Page 26: Service Request

    3.4.2.15 MODULATION WAVEFORM TYPE CODE = W The Modulation Waveform Type command requires a single parameter which sets the modulation waveform type of the converter. The converter is immediately set to the requested waveform type. Remote Command Sequence: Ww W: Modulation Waveform Type Indicator w: "0", "1"...

  • Page 27: Remote Interface Connector

    3.5 REMOTE INTERFACE CONNECTOR RS422/485* - J6 and J10-1 Ground Data Out - Data In - Data Out + Data In + *For RS485 two wire party line operation DATA IN + must be externally wired to DATA OUT +, and DATA IN - externally wired to DATA OUT -.
  • Page 28 IEEE-488 - IEEE-488 compatible 24 contact connector (receptacle). BCD Contact Closure (DB25S) - Commands Status Indicator Contacts (BCD) (BCD) J6-6 1 LSB J6-1 1 LSB 20 MSB RTN (Ground) RTN (Ground) ÚÄ Ä Ä Ä > Cable Supervision ³ (Enables remote operation when tied low) ÀÄ...
  • Page 29 4.1 SUMMARY ALARM CONNECTOR The Summary Alarm connector, located on the rear panel, provides the status of the converters' alarm functions via a contact closure interface. The Summary Alarm connector (J3) pin designations are as follows - 1. DC Power Status - a.
  • Page 30 M:\TECHNOTE\25T024.DOC...

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