Kenwood TS-990S Operation Manual - Page 289

TROUBLESHOOTING 18 SYMPTOMS ENCOUNTERED IN ASSOCIATION WITH DATA COMMUNICATIONS, PC AND NETWORK Symptom Common Problem What to do Ref. Page Errors and retries are more likely to occur while The AF signal output level from the TNC is Decrease the TNC output level in order transmitting in AFSK mode. too high and the modulated signal will be not to exceed the ALC zone. {page 16-20} distorted. The audio input sensitivity from the ACC Adjust, using Menu 7-06, the audio input 2 connector of the transceiver does not sensitivity of the ACC 2 connector not to {page 16-20} match the entered signal. exceed the ALC zone. The modulated signal was distorted due to Measure the anti-looping. the loop interference by the high frequency 1 Retry the antenna matching. signal. 2 Change the grounding from the 1 The antenna Standing Wave Ratio is too antenna, the transceiver, and the TNC. high. 2 The high frequency signal is induced to 3 Decrease, using Menu 7-05, the audio input sensitivity of the ACC 2 connector. {page 16-20} the transceiver from an antenna. 3 The audio input sensitivity of the ACC2 connector is too high, so that the high frequency signal loops. Audio signal entered to the data The transceiver is in the Transmit state with Place the PKS terminal in the ACC 2 communications port cannot be transmitted. a press of [PTT] or [SEND]. connector into the active state or press [PF] preprogrammed as Data Send to {page 1-11} transmit. The audio level from the data Decrease the audio signal output level communications connector is too low. of the equipment connected to the transceiver, or increase the audio signal {page 16-20} input level using Menus 7-05 and 7-06. More errors are likely to occur while receiving in The received audio cannot be decoded Deselect the audio output level from the FSK mode. since the audio output level from the ACC ACC 2 connector, from Menu 7-10. 2 connector does not match the input level {page 16-20} for the TNC and MCP. Multi-path distortion and short-interval In the case of a beam antenna, you phasing occur (it is not always best to have can seek the position where the error is the receive signal strength as the strongest unlikely to occur by changing the antenna strength). direction. There is no communication with the ARCP-990 The baud rate is inappropriate. using the COM port. Be sure that the baud rate configured for the TS-990S and ARCP-990 is consistent. {page 16-10} CTS/RTS are not properly assigned in the COM port. Configure the pin assignment of the COM connector in Advanced Menu 24. {page 16-25} There is no communication with the ARCP-990 No driver is installed onto the PC. Download the driver software from the using the USB port. KENWOOD web site and install it onto {page 16-10} your PC. The baud rate is inappropriate. Be sure that the baud rate configured for the TS-990S and ARCP-990 is consistent. {page 16-10} If a PC is connected to the transceiver using If a KENWOOD transceiver, such as the Keep connecting the KENWOOD a USB cable, the larger COM port number is TH-D72A/E, TS-590S, or TS-990S, is transceiver to a PC using a USB cable, assigned to a PC. connected to the port which is different and delete the unnecessary COM port from the last used USB port, the OS number from the "Device manager" of assigns a new COM port number. your PC. Refer to the Web Site below. http://www.kenwood.com/i/products/info/ amateur/vcp_e.html The time cannot be corrected with an NTP An IP address cannot be acquired. Be sure that "On" is selected for DHCP. server. Be sure that the DHCP server is enabled in the broadband router and working {page 16-12} properly. No NTP server address has been configured. Enter an NTP Server address. {page 15-3} The NTP information cannot be transferred Open the port on the communications from WAN. devices such as a broadband router not to shut down the port to be used for the {page 1-9} communication to an NTP server. No LAN cable is connected. Be sure that the LAN cable is properly connected. {page 1-9} No date and time can be configured. Automatic time correction is enabled. Disable the automatic time correction. {page 15-4} Contents Index 18-11