Japan Radio Co. JSS-2150, Руководство по обслуживанию, Страница: 88 / 160

OPERATION CHECK AFTER INSTALLATION
3-4
Rating: Within ±10 Hz
3.1.2.11 Checking the antenna VSWR
•
Check the output power (Pf) and reflected power (Pr) using a through watt meter (CM power
meter).
Reference: When Pf = 150 W and Pr = 6 W, VSWR = 1.5 using the following equation.
Note 1: When Pf is 150 W (±20%), it is best when Pr is less than 6 W.
Note 2: When VSWR is over approximately 2.5, the TUNE mark blinks on the LCD.
3.1.2.12 Radiotelephone communication test
•
If possible, test radiotelephone communications with another station.
* Always get permission from the ship's officer in charge before sending a radio signal.
3.1.2.13 DSC communication test
•
If possible, test DSC communications with another station.
* Always get permission from the ship's officer in charge before sending a radio signal.
** In the field maintenance mode, operate the DSC menu after restarting in the normal mode
because the DSC menu is unavailable in the field maintenance mode.
[Test instructions (example)]
①
On the status display, hold down the FUNC key and press 0 to display 1. DSC
non-distress call.
② Enter the MMSI of the objective station (coast station or other ship) being called in
Address.
③
As necessary, enter the call frequency in Calling FRQ. (Default: 2187.5 kHz)
④
Move the cursor to Call and press ENT to transmit a DSC test call.
⑤ Once a response from the objective station has been received, check that that message
displays as Received safety message.
Note: Depending on conditions of the objective station, a response may not be received.
3.1.2.14 NBDP communication test
•
If possible, test NBDP communications with another station.
* Always get permission from the ship's officer in charge before sending a radio signal.
** In the field maintenance mode, operate the data terminal after restarting in the normal mode
because that telex menu is unavailable in the field maintenance mode.
3.1.2.15 Checking the documentation and explain operations
•
Is the bridge card placed close to the controller?
•
Is the instruction manual stored in an appropriate location?
•
Explain how to use the equipment to the users.
3.1.2.16 Rechecking the installation
Once again at the end, check that the controller, transceiver, antenna tuner, and other units are fixed.
TEST
CALL