![background image](http://html.mh-extra.com/html/samsung/sch-870/sch-870_service-manual_1189786011.webp)
3. Dsub 25 PIN CONNECTOR PIN DESCRIPTION (TEST CABLE 1, BACK SIDE)
DATA
Dsub CONN.
DESCRIPTION
PIN NO.
V_F
12,21
DGND
2, 4, 6, 13, 19
BATT
15, 16, 22
C_F
3,20
TX_AUDIO
5
DP_TX_DATA
7
RX_AUDIO
1
DATA
Dsub CONN.
DESCRIPTION
PIN NO.
DP_RX_DATA
8
HP_PWR
9
RI
10
CD
11
RTS
14
CTS
17
DTR
18
4. CONVERSION TABLE OF FREQUENCY vs CHANNEL
T Y P E
CHANNEL
CONVERSION EQUATION
REMARK
TX 1
≤
N
≤
799
F=0.03 X N + 825.00
N ; CH NUMBER
FREQUENCY
990
≤
N
≤
1023
F=0.03 X (N-1023) + 825.00
F ; FREQUENCY
RX
1
≤
N
≤
799
F=0.03 X N + 870.00
(AMPS/CDMA)
FREQUENCY
990
≤
N
≤
1023
F=0.03 X (N-1023) + 870.00
Samsung Electronics
4-3
14
15
16
17
18
19
20
21
22
23
24
25
1
2
3
4
5
6
7
8
9
10
11
12
13
Summary of Contents for SCH-870
Page 2: ...Samsung Electronics Co Ltd Dec 00 Pinted in Korea Code No GH68 01765A ELECTRONICS ...
Page 17: ...5 Exploded View its Parts List 5 1 Main Set Exploded View Samsung Electronics 5 1 ...
Page 39: ...Samsung Electronics 8 1 8 PCB Diagram 8 1 Logic Top View ...
Page 40: ...8 2 Samsung Electronics 8 2 Logic Bottom View ...