PRAXSYM 5500 User Manual

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

Download this manual

PRAXSYM

Model 5500 Receiver

Model 5700 Transmitter

User's Manual

February 6, 2002

Table of Contents

Need help?

Do you have a question about the 5500 and is the answer not in the manual?

Questions and answers

Summary of Contents for PRAXSYM 5500

Page 1 PRAXSYM Model 5500 Receiver Model 5700 Transmitter User’s Manual February 6, 2002...
Page 2: Table Of Contents
Operation with External Power Source page 14 Programming the Synthesizer page 14 Programming Through a PC page 14 Programming Through the Model 5500 Receiver page 15 Definition of Transmitter Commands and Error Codes page 16 Appendix A - RXScan Software page 18...
Page 3: Overview Of Model 5500 Receiver
USER MANUAL Overview of Model 5500 The Model 5500 Signal Strength Receiver is a portable, dual band receiver that measures the strength of an RF signal. The receiver is capable of measuring signal strengths from -20dBm to -120dBm. The frequency and signal strength are displayed on the LCD display on the front panel or can be monitored remotely over an RS232 interface.
Page 4: Operation Of Model 5500 Receiver
2.0 Operation of the Model 5500 Receiver 2.1 Control and Indicator Description See the following figure for the connections and control locations. Communications port Shipping switch Model 5500 Dual Band Receiver Key Name Key Function Press the ‘ON’ key to turn the unit on. The display will indicate the receiver status.
Page 5: Battery Charging
Received Signal Strength Synthesizer Lock Status -110 dBm Receiver Freq: Frequency Band: Battery Charge State Active Band Indicator Function Received Signal Strength Indicates the signal strength of the channel the Receiver is currently tuned to receive. Receiver Frequency Indicates the frequency of the channel the Receiver is tuned to receive. Active Band Indicates the active frequency band.
Page 6: Operation With Aa Dry Cells
C. Install the new batteries and reinstall the lid and screws. NOTES • If the 5500 Receiver will be operated for periods of greater than 6 hours, it is recommended that the AC/DC adapter be connected to the unit. •...
Page 7: Making Path Loss Measurements
Making Path Loss Measurements The Model 5500 Receiver measures absolute signal strength of CW signals at the antenna input port. Relative path loss measurements can easily be made by selecting a reference location and then moving the receiver to different locations while noting the change in received signal strength. To measure actual path loss, the user must take into account the gain of the antennas being used on both the transmitter and receiver and the output power of the transmitter.
Page 8: Definition Of Receiver Commands And Error Codes
• Install the supplied cable between a serial port on the PC/laptop and the serial port on the receiver. • Start the terminal emulation software and setup with the following parameters. Baud rate 9600 Data bits Stop bits Parity none Comm port whichever one cable is plugged into on PC/laptop Local echo...
Page 9 setting. Changing the step size will cause the synthesizer to unlock. Upon power up, the step size defaults to factory settings. Contact the factory if other step sizes are required. BD=X<CR> Set frequency band This command is used to select the band to be received. BD=0 selects the low band. BD=1 selects the high band.
Page 10 ERROR RESPONSES: Invalid commands will be acknowledged with an error response. An error response will consist of 4 ASCII bytes followed by a carriage return. The error code consists of the two characters ER followed by a two-character error status code. ERIC<CR>...
Page 11: Overview Of Model 5700 Transmitter
The Model 5700 consists of two Synthesizer Assemblies (one low band- Cellular or GSM and one high band- PCS or DCS) and the RF Leveling and Battery Box. The Battery Box (Praxsym part number 310-010054) provides power and RF switching and leveling for the Synthesizer Assemblies (contact Praxsym for part numbers and availability of synthesizer assemblies for other bands).
Page 12 Model 5700 Transmitter POWER -When the slide switch is moved to the ON position, and power is applied to the selected synthesizer, the power indicator LED will illuminate. When the internal battery voltage is greater than 8V, the LED glows green. When the internal battery voltage drops below 8V, the LED glows red.
Page 13: Battery Charging
Battery Charging Connect the AC/DC adapter (15V / 1A) to the unit’s CHARGE jack. Plug the adapter into a 115V 50/60 Hz power outlet. An internal battery charger will control and terminate the charging of the 8 NiMH cells within each unit. Allow 1.5 hours to fully charge the batteries. Charge cycle description: A.) A new charge cycle is started by: Connecting the AC/DC adapter.
Page 14: Operation With External Power Source
Operation from an External Power Source If the unit is to be operated continuously from the supplied wall adapter and battery operation is not desirable, the following steps may be taken to operate without internal batteries. • With the unit off and unplugged from the wall adapter, remove the four screws from the back of the Battery Box.
Page 15: Programming Through The Model 5500 Receiver
See Section 9.0 for a complete listing of all commands and error codes. If desired, connect the RF OUT to power meter or spectrum analyzer to adjust the output level. Alternatively, the Model 5500 Receiver can be used to adjust the output. See the procedure described in Section 3.0.
Page 16: Definition Of Transmitter Commands And Error Codes
position. If a high band frequency is to be programmed, the switch must be in the up position. Polling the Transmitter: The user can poll or query the transmitter for its current frequency setting. Press “CTRL” and “F2” simultaneously. The receiver will display “TX PROGRAM MODE” and the current frequency setting for the transmitter.
Page 17 change the setting. Changing the step size will cause the synthesizer to unlock. The transmitter is automatically disabled (TX=0) after a ST=X.XXX command. A new frequency (FR=XXXX.yyyy) must be sent after a step change, followed by an enable transmitter command (TX=1). Upon power up, the step size defaults to factory settings.
Page 18: Appendix Arxscan Software
Before pushing the “Scan” button on the RXScan PC software, the following hardware considerations should be checked: 1) The Model 5500 Signal Strength Receiver should be turned on. 2) An antenna or some type of signal source should be connected to either the low band or the high band antenna ports on the receiver.
Page 19 RXScan was tested with Garmin's eMap GPS. With the Garmin eMap GPS, it can be configured for indoor use, where it outputs the last known latitude and longitude. Model and Scan Range Selection Now that the comm port is open, go to ‘Settings’ and choose the appropriate receiver model.
Page 20 The data that was gathered from the receiver is now stored in an Excel workbook. It can be saved by accessing File/Save As in Microsoft Excel. Using Frequency Bank The Frequency Bank option allows the user to select up to six frequencies to monitor. Each time the ‘Scan’...
Page 21 A combination of high band and low band frequencies can be monitored in the Frequency Bank. To enable a frequency for monitoring, the box to the left of the step size must be checked. Once the box is checked, the label will read ‘Enabled’...
Page 22 Programming the Model 5700 Transmitter The RXScan Software can program the Model 5700 Transmitter. The transmitter should be turned on. A serial cable should be connected to the appropriate serial port on the transmitter and to a free comm port on the PC. Click on the “Transmitter” tab near the top of the program window. After clicking on this tab, a message window should appear reminding the user that the communications cable needs to be disconnected from the receiver and connected to the transmitter.

This manual is also suitable for:

5700