Westermo MM-61 - Manual (Page 4)

Specifications MM-61
Transmission: Asynchronous/synchronous*, Power supply: +5V DC, ±5% 300 mA via
full/half duplex or simplex mains adapter PS-6
Interface 1: EIA RS-232/CCITT V.24 Data rate: Up to 38 400 bit/s arbitrary for
25 pole D-sub connector each channel at the same time
male/female. Switchable Power consumption: Max 7.0 VA at 230V
between DCE/DTE Temperature range: 5-50°C ambient temperature
Interface 2: See table of power budget, Humidity: 0-95% RH without
ST-connectors condensation
Isolation: 3000V transformer Dimension: 60x22x98 mm ( WxHxD)
( Power Supply) Weight: 0.07 kg
Main adapter: PS-6, 1.5m cable
* Cable is required between connected equipment and MM-61 25 pole D-sub connector.
Switch settings MM-61
The MM-61 is a 4-channel fibre optic modem. There are two versions, 25 pole male D-sub connector
or 25 pole female D-sub connector on the RS-232-C side. To adjust to the surrounding equipment
it is possible to select DCE or DTE function by removing the lid and shift X1/X2. The easiest
way to open the plastic case is by placing and turning a coin or screwdriver in the gaps
between top and bottom.
6
;
5;
7;
;
%
X 1 /X 2 S elec tio n o f fu n ction D C E /D T E
(T h e c a ble is p lac ed in re qu ired co n n ec to r)
S 2 S elec tio n o f n o rm a l o r in ve rte d sig n al
o n th e lin e b etw ee n m od e m s
S2 Signal on the line = Jumper
1 2 3 between modems
Normal = Factory setting
Inverted
Power budget
Fibre 820 nm
50/125 µm 3.7 dB
62.5/125 µm 7.5 dB
200 PCS 18 dB