Microwave Data Systems MDS 4310 - Page 52

MDS 05-2415A01, Rev. A PROGRAMMING AND DIAGNOSTICS 3-7
• Time-Out Timer length = 30 sec
• Soft Carrier Dekey = 0 ms
• Squelch Tail Eliminator = On
The transceiver is to be programmed to operate in a system requiring the following
parameters:
• Transmit frequency = 428.8375 MHz
• Receive frequency = 438.8375 MHz
• Time-Out Timer length = 94 sec
• Soft Carrier Dekey = 4 ms
• Squelch Tail Eliminator = off
• Loopback Code = 1234
The list of steps and commands below will program the MDS 4310 with the required values.
1. Connect the HHT to the transceiver as previously outlined, and open the diagnostics
channel if necessary.
2. Verify the current frequencies by typing
FRQ +
ENTER
. Display will read:
TX FRQ = 428.01250
RX FRQ = 438.01250
3. Program the new transmit frequency by typing PTX +
SPACE
+
SHIFT
+
428.83750 +
SHIFT
+
ENTER
. Be sure to include the decimal point and all trailing zeros.
The display will read
TX FRQ PRGMD TO 428.83750 MHZ if the information was entered
correctly and accepted by the microcontroller.
4. Program the new receive frequency by typing
PRX +
SPACE
+
SHIFT
438.83750 +
SHIFT
+
ENTER
, again taking care to enter in all characters.
If the information was entered properly, and accepted by the microcontroller, the
display will read
RX FRQ PRGMD TO 438.83750 MHZ.
5. Program the time-out timer length by entering
PTOT +
SPACE
+
SHIFT
+ 94 +
SHIFT
+
ENTER
. The display will read TIME-OUT TIMER SET TO 094 SECS.
6. Program the soft carrier time by entering
PSCD +
SPACE
+
SHIFT
+ 4
+
SHIFT
+
ENTER
. Display will read SOFT CARR. DEKEY SET TO 004 MS.
7. Disable the STE by typing
DSTE +
ENTER
. The display will read SQUELCH TAIL
ELIMINATOR OFF
.
8. The information entered in can now be reviewed by using the
FRQ, TOT, SCD and STE
commands to review each setting.
9. Enter the loopback code by typing
PLBC +
SPACE
+
SHIFT
+ 1234 +
SHIFT
+
ENTER
. The display will change and read LOOPBACK CODE = 1234.
10. Close the diagnostics channel by typing
CLOS +
ENTER
before unplugging the HHT.
This completes the programming sequence.