TRANGOLINK SOFTWARE OPERATION
The Trangolink software allows the user to change the user settings on the PTZ-900TX and PTZ-900RX.
The software runs under the Windows 95 PC platform and connects from either COM1 or COM2 to the
Data interface on the transmitter or receiver via the Cabldat-2 interface cable. After entering the program, a
screen is displayed showing the current settings. The user may change the settings and upon exiting the
program and cycling power to the unit the settings will be come effective.
PN Sequence:
The hopping channel sequence, which must be the same on the transmitter and receiver in
order for data to be transferred properly.
RSSI:
Used for receiver only to monitor the radio spectrum on all hopping channels. Useful in
troubleshooting to determine if any signals are present in the 900 MHz band.
Data Rate:
Serial port data rate for user data. Must be the same on the transmitter and receiver.
Trangolink interface is unaffected by changes made here.
Mode:
RS-232 (unbalanced) or RS-422/RS-485 (differential). Select the mode which matches your PTZ
control equipment.
Address:
Used if more than one system is to be used on the same hopping sequence in the same area.
TROUBLESHOOTING
INTERFERENCE – INTERMITTENT OPERATION
Heavy equipment such as industrial roof –mounted air conditioners or fan motors in close proximity to the transmitter or receiver or
cables may cause interference, especially when operating using RS232 mode. Move the unit/cable away from the source of the
interference.
Antenna polarization may be wrong. The AD900-9 antenna is normally horizontally polarized which has been determined to give the
best results. When using Yagi antenna on the receiver make sure that the alignment is as follows:
pic
Raise transmitter and receiver antennae above ground and away from obstacles and traffic, including foot traffic.
Verify all connectors are tight.
Shorten the receiver antenna feed cable.
Cable from transmitter to PTZ controller is too long, corrupting digital data. Use Cat 5 twisted pair shielded cable if possible with a
maximum length of 500 feet for RS422 and 200 feet for RS232.
If the system becomes unusable for a period of time on the order or minutes or hours and then becomes usable again, changing the PN
sequence may cure the problem. The different PN sequences have different waiting channels that are used to synchronize the hopping
sequences. Depending on your environment, there may be a 900 MHz transmitter interfering on one of the waiting channels. By
changing the PN sequence on the transmitter and receiver, the waiting channel will change. Some of the types of equipment that may
interfere are: 900 MHz cordless phones, wireless LANs if very close to the PTZ-900RX receiver.
Summary of Contents for PTZ-900
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