RAD DATA COMMUNICATIONS
LDV-2
|
Modem Type |
Data (synchronous/asynchronous) |
|
Maximum Data Rate |
19.2Kbps |
|
Data Bus |
External |
|
Data Modulation Protocol |
Prorietary |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Line out |
CN1 |
Digital loopback switch |
DLB |
|
Line in |
CN2 |
Data clamp and loop 1 test switch |
DC-L1 |
|
RS-232 |
CN3 |
Remote digital loopback switch |
RLB |
|
AC power |
CN4 |
Fuse |
FUSE |
|
BAUD RATE | |
| Setting |
SW1 |
| 19.2Kbps |
0 |
| 14.4Kbps |
1 |
| 9600bps |
2 |
| 7200bps |
3 |
| » 4800bps |
4 |
| 3600bps |
5 |
| 2400bps |
6 |
| 1800bps |
7 |
| 1200bps |
8 |
|
900bps |
9 |
|
CARRIER TRANSMISSION LEVEL | |||
| Setting |
JP5/A |
JP5/B |
JP5/C |
| Long distance (-50dBm) |
Closed |
Open |
Open |
| » Medium distance (-40dBm) |
Open |
Closed |
Open |
| Short distance (-30dBm) |
Open |
Open |
Closed |
|
CD SIGNAL | |||
| Setting |
JP7/A |
JP7/B |
JP7/C |
| » CD forced high. |
Closed |
Open |
Open |
| CD follows RTS signal. |
Open |
Closed |
Open |
| CD normal. |
Open |
Open |
Closed |
|
CENTRAL/REMOTE UNIT SELECTOR | |
| Settings |
JP1 |
| Central unit |
Pins 1 & 2 closed |
| » Remote unit |
Pins 2 & 3 closed |
|
CHASSIS TO SIGNAL GROUND | |
| Setting |
JP8 |
| Connected |
Pins 2 & 3 closed |
| » Disconnected |
Pins 1 & 2 closed |
|
CLOCK SOURCE | |||
| Setting |
JP4/A |
JP4/B |
JP4/C |
| External |
Closed |
Open |
Open |
| » Internal |
Open |
Closed |
Open |
| Receive |
Open |
Open |
Closed |
|
DATA CLAMP/LOOP1 TEST | |
| Setting |
JP10 |
| Enabled |
Pins 1 & 2 closed |
| » Disabled |
Pins 2 & 3 closed |
|
ENABLES TEST PUSHBUTTONS | |
| Setting |
JP9 |
| » DLB, DC-L1, RLB enabled |
Pins 1 & 2 closed |
| Disabled |
Pins 2 & 3 closed |
|
REMOTE LOOPACK | |
| Setting |
JP11 |
| Enabled |
Pins 1 & 2 closed |
| » Disabled |
Pins 2 & 3 closed |
|
RTS/CTS DELAY | |||
| Setting |
JP3/A |
JP3/B |
JP3/C |
| 0 ms |
Closed |
Open |
Open |
| » 8 ms |
Open |
Closed |
Open |
| 68 ms |
Open |
Open |
Closed |
|
SYNCHRONOUS/ASYNCHRONOUS SELECTOR | |
| Settings |
JP2 |
| Synchronous |
Pins 1 & 2 closed |
| » Asynchronous |
Pins 2 & 3 closed |
|
TRANSMIT LEVEL | |||
| Remote/Central mode |
JP6/A |
JP6/B |
JP6/C |
| » 0dBm/-6dBm |
Closed |
Open |
Open |
| -3dBm/-9dBm |
Open |
Closed |
Open |
| -6dBm/-12dBm |
Open |
Open |
Closed |
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
PWR |
Green |
On |
Power is on |
|
PWR |
Green |
Off |
Power is off |
|
RTS |
Yellow |
On |
Request to Send enabled |
|
RTS |
Yellow |
Off |
Request to Send disabled |
|
TD |
Yellow |
On |
Modem is transmitting steady SPACE |
|
TD |
Yellow |
Off |
Modem is not transmitting data |
|
TD |
Yellow |
Blinking |
Modem is transmitting data |
|
RD |
Yellow |
On |
Modem is receiving steady SPACE |
|
RD |
Yellow |
Off |
Modem is not receiving data |
|
RD |
Yellow |
Blinking |
Modem is receiving data |
|
DCD |
Yellow |
On |
Carrier signal detected |
|
DCD |
Yellow |
Off |
Carrier signal not detected |
|
TEST |
Red |
On |
Modem in test mode |
|
TEST |
Red |
Off |
Modem not in test mode |