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RCL220_manual_v3-draft.doc
New DB-
Signal
25 Pin
9
COM3_CTS
10
COM3_RTS
11
COM3_DTR
12
COM3_RXD
13
GND
14
ETH_TX_H
15
ETH_TX_L
16
ETH_RX_H
17
ETH_RX_L
18
EXT_KEY
19
EXT_DET
20
COM2_DTR
21
ALARM_OUT
22
GPS_PPS_L
23
GPS_PPS_H
24
TXD*
25
RXD**
* TXD is called COM1_RXD on the AP. It truly is an input to the MDS unit.
** RXD is called COM1_TXD on the AP. It truly is an output from the MDS unit.
The DB-25 connector is female, and the orientation of the connector as looking into the front panel of
the unit is as shown below.
13
12
11
10
9
8
25
24
23
22
21
2.3.2 RF Connector
The RF connector is TNC. Lightning suppression such as a Polyphaser IS-B50 series protector should
be employed between the antenna and the radio. The body of the protector should be well grounded
to earth ground. In addition, the shield of the feedline should be connected to earth ground before
entry into any inside enclosure.
2.3.3 Power Connector Pinout
The Packaged Radio Module provides a Phoenix 17 76 69 2 connector for DC power in. A surge
protection device such as a Polyphaser IS-17VDC-30A-NG capable of limiting the voltage input to the
radio to less than 30 Volts should be employed as near to the radio as possible.
Pin
Signal Name
1 (L)
PWR
2 I
GROUND
05-XXXXA01 Version 3 Draft
Previous PRM
Previous
Connector
PRM Pin
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
I/O
1
I/O
2
J3 (COM2)
3
I/O
3
I/O
5
I/O
6
J5 (COM1)
5
J5 (COM1)
4
7
6
5
4
3
2
20
19
18
17
16
15
Direction with respect to MDS Equipment
Input
Input
Page 16 of 79
Direction WRT MDS
Equipment
Input
Output
Output
Input
Input/Output
Output
Output
Input
Input
Output
Input
Input
Output
Input
Input
Input
Output
1
14
Description
6 to 30 VDC input, 800
mA at 13.8 VDC
Power return.
9/20/2016
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