Technical Data
GENERAL DESCRIPTION
VERSITRON FOM II F2800 group fiber optic modems provide synchronous/asynchronous /isochronous full-, half-duplex, or simplex data transmission now at speeds up to 1 Mbps at distances up to 14 km, with fully transparent operation. These modems support RS-232, RS-422, RS-423, RS-449, RS-530, V.35, MIL-188C, MIL-188-114 and are offered in many different configurations to meet a wide variety of fiber optic sets and link budgets.
To match specific communication link distance requirements. F2800 group modems incorporate interchangeable optical modules which may be installed easily in the field. The modems operate over a 20dB link margin on 850 nm optics with 100/140 micron multimode fiber at a better than 10 to the minus 9th BER (Bit Error Rate), and can also be used with 50/125 or 62.5/125 multimode fiber optic cable with link budget modifications. The F2800 group modems are also compatible with 9/125 and 10/125 singlemode fiber.
FEATURES
To accomodate quick, low cost system expansion and/or changes, F2800 group modems incorporate unique Xilinx programmable CPLD or FPGA technologies. Sampling rates are optimized to accommodate higher data speeds.
F2800 group modems also incorporate internal (18 discrete frequencies, switch selectable--see chart) as well as external (data agile, any frequency, 0-300 kbps) clocking options. In addition, these modems have a remote/local switch to loop CTS signal internally, a loop back switch for data link trouble-shooting, and LED status indicators.
They are available with ST optical connectors in both short wavelengths (850nm) and long wavelengths (1300nm) for multimode fiber. Singlemode 1300 nm longwave is also available. (See selection guide below).
Interchangeable fiber optic modules are field replaceable to permit quick, convenient upgrades as system requirements change or grow.
Mounting configurations include FOM II chassis (HF1, HF2, HF2SS, or HF20 housings).
SELECTION GUIDE
| Model |
Interface |
Data Rate |
Optics |
Connector |
Distance |
Fiber |
F2802M
MicroModem Compatible |
RS-232, RS423
MIL-STD-188C |
64 Kbps |
850nm |
ST |
2 km |
MM |
| F2802A |
RS-232, RS-423
MIL-STD-188C |
128 Kbps |
850nm |
ST |
2 Km |
MM |
| F2802C |
RS-232, RS-423
MIL-STD-188C |
1 Mbps |
850nm |
ST |
2 km |
MM |
F2804M
MicroModem Compatible |
RS-232,RS-523
MIL-STD-188C |
64 Kbps |
1300nm |
ST |
8 km |
MM |
| F2804A |
RS-232, RS-423
MIL-STD-188C |
128 Kbps |
1300nm |
ST |
8 km |
MM |
| F2804C |
RS-232, RS-423
MIL-STD-188C |
1 Mbps |
1300nm |
ST |
8 km |
MM |
F2805M
MicroModem Compatible |
RS-232, RS-423
MIL-STD-188C |
64 kbps |
1300nm |
ST |
14 km |
SM |
| F2805A |
RS-232, RS-423
MIL-STD-188C |
128 kbps |
1300nm |
ST |
14 km |
SM |
| F2805C |
RS-232, RS-423
MIL-STD-188C |
1 Mbps |
1300nm |
ST |
14 km |
SM |
F2822M
MicroModem Compatible |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
64 kbps |
850nm |
ST |
2 km |
MM |
| F2822A |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
300 kbps* |
850nm |
ST |
2 km |
MM |
| F2822C |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
1 Mbps** |
850nm |
ST |
2 km |
MM |
F2824M
MicroModem Compatible |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
64 kbps |
1300nm |
ST |
8 km |
MM |
| F2824A |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
300 kbps* |
1300nm |
ST |
8 km |
MM |
| F2824C |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
1 Mbps** |
1300nm |
ST |
8 km |
MM |
F2825M
MicroModem Compatible |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
64 kbps |
1300nm |
ST |
14 km |
SM |
| F2825A |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
300 kbps * |
1300nm |
ST |
14 km |
SM |
| F2825C |
RS-530, RS-422, RS-449,
V.35, MIL-STD-188-114 |
1 Mbps** |
1300nm |
ST |
14 km |
SM |
* 300 Kbps terminal timing (150 kbps source timing)
** 1 Mbps terminal timing (450 kbps source timing)
Note: RS-449 and V.35 interfaces require the use of an adapter with the F282X models.
TECHNICAL SPECIFICATIONS
| Protocol: |
Asynchronous/Synchronous/Isochronous |
| Data Rate: |
0 to 1 Mbps data agile (depending on model selected) |
| Operation: |
Full duplex, half duplex, simplex
DTE/DCE switch selectable |
| Optical Connector: |
ST |
| Fiber Cable: |
50/125, 62.5/125 or 100/140mm (with 850 nm multimode optics)
50/125 or 62.5/125mm
(with 1300nm multimode optics)
9/125 or 10/125mm (with 1300nm singlemode optics) |
| Link Margin: |
20 dB |
| Error Rate: |
Better than 10 to the minus 9th |
| Digital Interface: |
Signal levels and format conform to RS-232, RS-422, RS-423, MIL-188C, RS-530, MIL-188-114, RS-449, and V.35 |
| Sampling Rate: |
2.485 MHz on data and clock channels; 174.75 KHz on control lines |
| Electrical Connector: |
DB25 Female |
| Power Requirements: |
12 VDC @ 1A |
| Operating Temp: |
0 º to +50ºC (32º to 122ºF) |
| Relative Humidity: |
Up to 95% (non-condensing) |
| Altitude: |
Up to 10,000 feet |
| Dimensions: |
1"H x 7"W x 11" L (2.5cm H x 17.8cm W x 27.9cm L) |
| Altitude: |
11 oz. (0.275 kg) |
NOTE
Continuously variable synchronous, asynchronous, isochronous data rates up to 1 Mbps. DTE source timing applications may be dependent upon cable length. Consult factory to discuss your specific applications and configuration requirements.
INTERNAL CLOCK RATE SELECTION GUIDE (F280x and F282x models)
Date Rate (HZ)
| 75 |
9600 |
| 150 |
14.4K |
| 300 |
19.2k |
| 600 |
28.8K |
| 1200 |
38.4K |
| 2400 |
56K |
| 3600 |
57.7K |
| 4800 |
64K |
| 7200 |
76.8K |
|
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