Microwave Data Systems MDS 4310, Установка, эксплуатация и техническое обслуживание на месте

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3-6 PROGRAMMING AND DIAGNOSTICS MDS 05-2415A01, Rev. A
Error Messages
Listed below are common error messages that may be encountered when using the HHT.
"
INCORRECT ENTRY
"
Data was entered in a wrong format, or wrong number of digits.
"
COMMAND ENTRY ERROR
"
Command improperly entered, or an invalid command was tried.
"
INCORRECT FREQUENCY ENTRY
"
Last digit of frequency was omitted, or frequency entered was out of range.
"
DIAGNOSTICS NOT INSTALLED
"
Diagnostic Board not installed or not detected by radio’s microcontroller.
Closing the Diagnostic Channel
The diagnostic channel between the HHT and the transceiver is automatically closed when a
HHT is disconnected to the transceiver. However, if an older HHT or transceiver is being
used, it must be closed before returning the transceiver to service. To manually close the
diagnostic channel when using older HHTs or transceivers, type in
CLOS
+
ENTER
. The
message "
DIAGNOSTICS IS CLOSED
" will be displayed, indicating a closed condition. At this
point it will be noticed that either the running cursor or the stationary solid flashing cursor
returns, and that all further keystrokes will be ignored by the HHT, another indication that the
diagnostics channel is closed.
Z
CTRL
U
+
–
K
*
F
/
A
F1
V
,
Q
#
)
G
(
B
F2
SHIFT
ESC
W
=
R
7
M
4
H
1
C
F3
BKSP
X
0
S
8
N
5
I
2
D
F4
SPACE
Y
●
T
9
O
6
3
E
F5
ENTER
J
L
P
Figure 3-2. Hand-Held Terminal Keypad
NOTE
The Diagnostics Channel automatically closes after 15 minutes
of no keyboard activity. If this happens, simply re-open the
channel to resume transceiver testing.
PROGRAMMING EXAMPLES
Refer to Figure 3-2 or an actual HHT for the following discussion. The following is an
example of reprograming the MDS 4310 Transceiver in the field, using the HHT. The current
parameters of operation are:
• Transmit frequency = 428.0125 MHz
• Receive frequency = 438.0125 MHz