REI MDC-900 manual Antenna Band, Filter B, Filter A & B, 3 6, 12 15 18, 13.5, 16.5, 19.5, 10.5

Page 4
3 6 9

Version 4

27 Feb 08

MDC-900 only

3 6 9

4.57.5

All Numbers

in GHz.

12 15 18 21

10.5

13.5

16.5

19.5

0

1.5

 

 

Antennas

All Numbers 3-9* 9-15

12 15 18 2115-21

*The MDC-900 only covers the band 1 frequency range.

Figure 2: ILLUSTRATION OF THE MDC-2100 DOWNCONVERSION PROCESS

The OSCOR (version 5.0) displays up to six 1.5GHz (1500MHz) windows simultaneously, or the spectrum may be separated into three antenna frequency bands: 3 to 9GHz, 9 to 15GHz, or 15 to 21GHz with two 1.5GHz windows displayed simultaneously.

Note: The MDC-900 has a single antenna and covers the band from 3 to 9GHz.

Built-in microwave filters can reduce the display even further. These filters are referred to as Filter A and Filter B. The Identify function allows for the determination of the frequency. Below is a chart representing the display of the frequencies in response to the selected antenna and microwave filter. Understanding Figure 3 is critical to understanding the OSCOR operations using the MDC-2100 and MDC-900.

Note: The OSCOR always super-imposes the various 1.5GHz windows.

ANTENNA BAND

Filter A

Filter B

Filter A & B

 

 

 

 

 

(Not applicable for OSCOR 5.0)

3 – 9GHz

4.5

-- 6

3 --

4.5

4.5

-- 6

3 --

4.5

 

6 --

7.5

7.5

-- 9

6 --

7.5

7.5

-- 9

9 – 15GHz

10.5

-- 12

9 --

10.5

10.5

-- 12

9 --

10.5

(MDC-2100 only)

12 --

13.5

13.5

-- 15

12 --

13.5

13.5

-- 15

15 – 21GHz

16.5

-- 18

15 --

16.5

16.5

-- 18

15 --

16.5

(MDC-2100 only)

18 --

19.5

19.5

-- 21

18 --

19.5

19.5

-- 21

Figure 3: OPERATIONAL FREQUENCY BANDS

REI

MDC-2100/MDC-900

4

Image 4
Contents MDC-2100/MDC-900 MDC-900 MDC-2100OWNER’S GUIDE RESEARCH ELECTRONICS INTERNATIONAL 455 Security DriveTABLE of CONTENTS TABLE of FIGURESSTORING A SIGNAL IN THE MDC FREQUENCY RANGE FIGURE 11 ANALYZE MODE USING THE MDC OSCORINTRODUCTION Figure 1 MDC-2100 MICROWAVE DOWNCONVERTERANTENNA BAND Filter AFilter B Filter A & BInstalling the MDC-2100/MDC-900 Operational Control of the MDC-2100/MDC-900 Signal identification ProcessOSCOR Version Viewing Bands 1, 2 and Press F4/MDC AnlzPress SWEEP/ANALYZE Press F4/Identify see Figure 6BOSCOR Sweep and Analyze Modes with the MDC Figure 6A ANALYZING AN MDC SIGNAL OSCORFigure 6B ANALYZING AN MDC SIGNAL OSCOR FIGURE 7 USING “IDENTIFY” TO VERIFY A SIGNAL OSCORFigure 8 SELECTING A SIGNAL WITH THE MDC OSCOR Storing a Sweep Span with the MDC Storing a Signal in the MDC Frequency Range Example of a Desired FrequencyRecommended Implementation SpanMicrowave Transmission Considerations for the MDC it is absolutely necessary in order to save time. A good rule of thumb is to assume that the MDC has an antenna pattern that is about 100 degrees wide. In other words, it is necessary to point the MDC in at least 4 different directions around the room to cover the perimeter. Also, the MDC should be pointed up and possibly moved around the room to cover the ceiling, and down to cover the floor. Furthermore, if you expect a very sophisticated threat, it is recommended to point the MDC into ducting, above ceiling tiles, and in any enclosed spaces in which it would be possible to place a transmitter with a high gain antenna. It is highly recommended that the “Show All” mode of operation for the MDC-2100 be utilized MDCA-all and MDCB-all if using OSCOR 5.0. When a signal is detected, the user can then manually select the different antenna bands and filters to further investigate the signal. Or, the user can simply go to the analyze mode and allow the MDC to determine the operational frequency of the transmitter. Also, it is not recommended to use the MDC with the OSCOR automatic mode unless the MDC directional characteristics are taken into consideration. If running the OSCOR and MDC in the automatic mode, take care to enable the appropriate MDC spans. To maximize usage of the MDC, include MDC 3-21GHz Filter A and MDC 3-21GHz Filter B in your span list For OSCOR 4.0 users, set span to All Bands A&B Using the MTU-2100 Microwave Test Unit MDC-2100/MDC-900 SPECIFICATIONS SpecificationsMDC-2100 MDC-900Technical Bulletin