• Frequency Allocation Tables
The RF channels for the SPP-IM977 are allocated in fixed pairs as
indicated in the tables below. The duplex frequency is maintained
at 22.75 MHz for 19 of the 30 channels and 17.95 MHz for the
remaining 11 channels.
Base Unit Frequencies
Channel
Transmit
Receive
RX LO
Frequency
Frequency
Frequency
1
902.30 MHz
925.05 MHz
914.35 MHz
2
902.45 MHz
925.20 MHz
914.50 MHz
3
902.60 MHz
925.35 MHz
914.65 MHz
4
902.75 MHz
925.50 MHz
914.80 MHz
5
902.90 MHz
925.65 MHz
914.95 MHz
6
903.05 MHz
925.80 MHz
915.10 MHz
7
903.20 MHz
925.95 MHz
915.25 MHz
8
903.35 MHz
926.10 MHz
915.40 MHz
9
903.50 MHz
926.25 MHz
915.55 MHz
10
903.65 MHz
926.40 MHz
915.70 MHz
11
903.80 MHz
926.55 MHz
915.85 MHz
12
903.95 MHz
926.70 MHz
916.00 MHz
13
904.10 MHz
926.85 MHz
916.15 MHz
14
904.25 MHz
927.00 MHz
916.30 MHz
15
904.40 MHz
927.15 MHz
916.45 MHz
16
904.55 MHz
927.30 MHz
916.60 MHz
17
904.70 MHz
927.45 MHz
916.75 MHz
18
904.85 MHz
927.60 MHz
916.90 MHz
19
905.00 MHz
927.75 MHz
917.05 MHz
20
905.15 MHz
923.10 MHz
912.40 MHz
21
905.30 MHz
923.25 MHz
912.55 MHz
22
905.45 MHz
923.40 MHz
912.70 MHz
23
905.60 MHz
923.55 MHz
912.85 MHz
24
905.75 MHz
923.70 MHz
913.00 MHz
25
905.90 MHz
923.85 MHz
913.15 MHz
26
906.05 MHz
924.00 MHz
913.30 MHz
27
906.20 MHz
924.15 MHz
913.45 MHz
28
906.35 MHz
924.30 MHz
913.60 MHz
29
906.50 MHz
924.45 MHz
913.75 MHz
30
906.65 MHz
924.60 MHz
913.90 MHz
Handset Frequencies
Channel
Transmit
Receive
RX LO
Frequency
Frequency
Frequency
1
925.05 MHz
902.30 MHz
913.00 MHz
2
925.20 MHz
902.45 MHz
913.15 MHz
3
925.35 MHz
902.60 MHz
913.30 MHz
4
925.50 MHz
902.75 MHz
913.45 MHz
5
925.65 MHz
902.90 MHz
913.60 MHz
6
925.80 MHz
903.05 MHz
913.75 MHz
7
925.95 MHz
903.20 MHz
913.90 MHz
8
926.10 MHz
903.35 MHz
914.05 MHz
9
926.25 MHz
903.50 MHz
914.20 MHz
10
926.40 MHz
903.65 MHz
914.35 MHz
11
926.55 MHz
903.80 MHz
914.50 MHz
12
926.70 MHz
903.95 MHz
914.65 MHz
13
926.85 MHz
904.10 MHz
914.80 MHz
14
927.00 MHz
904.25 MHz
914.95 MHz
15
927.15 MHz
904.40 MHz
915.10 MHz
16
927.30 MHz
904.55 MHz
915.25 MHz
17
927.45 MHz
904.70 MHz
915.40 MHz
18
927.60 MHz
904.85 MHz
915.55 MHz
19
927.75 MHz
905.00 MHz
915.70 MHz
20
923.10 MHz
905.15 MHz
915.85 MHz
21
923.25 MHz
905.30 MHz
916.00 MHz
22
923.40 MHz
905.45 MHz
916.15 MHz
23
923.55 MHz
905.60 MHz
916.30 MHz
24
923.70 MHz
905.75 MHz
916.45 MHz
25
923.85 MHz
905.90 MHz
916.60 MHz
26
924.00 MHz
906.05 MHz
916.75 MHz
27
924.15 MHz
906.20 MHz
916.90 MHz
28
924.30 MHz
906.35 MHz
917.05 MHz
29
924.45 MHz
906.50 MHz
917.20 MHz
30
924.60 MHz
906.65 MHz
917.35 MHz
– 22 –
1. Test Mode
[Entering the Test Mode]
1. Press the
[PGM]
key, then displayed “DIRECTORY AREA
RINGER” on the LCD.
2. Press the
[*]
,
[*]
,
[8]
,
[3]
,
[7]
,
[8]
keys, then displayed on
the LCD as below.
LCD display
[Releasing the Test Mode]
Press the
[OFF]
key.
[Key Functions]
[7]
key : LCD test
LCD display
[0]
key : Toggle TX power.
LCD display
# key : Increment RF channel.
LCD display
Increases the channel number
HANDSET
+
–
frequency counter
– HAND MAIN BOARD
(Component Side) –
J1
RF UNIT
C1057
C1031
C1029
U1001
2. Adjustment Equipment and Connection
3. Check the 18.4 MHz Frequency Error
Procedure:
1. Enter the test mode.
2. Connect the frequency counter to the test point J1 on the RF
unit.
3. Press the
[0]
key to turn on the TX power.
4. Check the frequency
±
1 kHz.
5. If the resuit is with in
±
1 kHz, then no alignment required.
Otherwise, refer to next item.
4. Adjustment the 18.4 MHz Frequency Error.
Procedure:
1. Remove C1031 from the HAND MAIN board.
2. Solder on 20 PF variable capacitor C1057 (1-164-160-11) on
the HAND MAIN board. (in parallel of C1029).
3. Enter the test mode.
4. Connect the frequency counter to the test point J1 on the RF
unit.
5. Press the
[0]
key to turn on the TX power.
6. Adjust C1057 on the HAND MAIN board for 0 Hz
±
1 kHz.
**Test Mode**
TxPwr:_ Ch:05
OLD
NEW
LINE1
LINE2
E
**Test Mode**
OLD
NEW
LINE1
LINE2
E
**Test Mode**
TxPwr:_ Ch:05
OLD
NEW
LINE1
LINE2
E
– 21 –
Summary of Contents for SPP-IM977
Page 26: ...SPP IM977 ...
Page 36: ......
