Database Fields in HDSpectrum™

Q:  What database fields do I need to have in my files to use them with HDSpectrum?

A:  Certain data fields are used by HDSpectrum.  If you include these fields in a dBaseIV format file you can open it and use it as a source file for creating Intermod studies in HDSpectrum.

(Note that all values and settings in this article are for illustration purposes only.  You should determine the appropriate settings for your application using good engineering judgment.)

For more information on the use and values for each field, see the article on Intermod Setup in HDSpectrum.

HDSpectrum Column

Database Field Name

Format

Example

Description

IMD ID

IMD_ID

Numeric, 7 digits

0000001

Record ID, each record should have a unique identifier, typically starting with 0000001

TX Use

IMD_TXUSE

Numeric, 2 characters

-1

Include TX frequency in this record;

-1         True; use frequency

0          False; do not use frequency

 

TX Ref Freq

IMD_TXREF

Numeric, 2 characters

-1

Mark TX frequency in this record as a “Reference Frequency”;

-1         True; reference frequency

0          False; not reference frequency

 

TX Freq

IMD_TXFMHZ

Numeric, maximum of 20 digits, 5 decimal digits

455.12500

Transmitter frequency in MHz

TX Offset

IMD_TXOFFS

Numeric, maximum of 20 digits, 5 decimal digits

7.50000

Modulated band (in kHz) above and below transmitter frequency.

TX Group

IMD_TXGRP

Numeric, maximum of 6 digits

1

Transmitter group flag; zero (0) for no group

TX Desc

IMD_TXDESC

Text, maximum of 40 characters

My Transmiter

Description of transmitter for this record

TX Harmonics

IMD_TXHARM

Numeric, 1 character

3

Number of harmonics (from 1 to 9, inclusive) to be included for this transmitter frequency

Full Duplex

IMD_FULDPX

Numeric, 2 characters

-1

Treat transmitter and receiver frequencies for this record as Full Duplex, meaning that the transmitter frequency can participate in intermod products affecting the receiver frequency from the same record

-1         True; Full Duplex operation

0          False; not Full Duplex operation (simplex or half-duplex)

RX Use

IMD_RXUSE

Numeric, 2 characters

-1

Include RX frequency in this record;

-1         True; use frequency

0          False; do not use frequency

 

RX Freq

IMD_RXFMHZ

Numeric, maximum of 20 digits, 5 decimal digits

455.12500

Receiver frequency in MHz

RX Offset

IMD_RXOFFS

Numeric, maximum of 20 digits, 5 decimal digits

7.50000

Protected band (in kHz) above and below receiver frequency.

RX Desc

IMD_RXDESC

Text, maximum of 40 characters

My Receiver

Description of receiver for this record

 

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