Specifications

Table 2 lists the specifications for the Multiple Digital Messaging Unit.

Figure 9 on the next page give the Aux. Connector pin-out definitions.

Table 2 Multiple

Digital

Messaging Unit Specifications.

 

 

 

 

 

Power Supply

115 VAC, 60 Hz, or 220 VAC, 50 Hz (specified on MDMU rear panel).

 

 

 

 

 

 

Dimensions and

Height:

1.75 inches (4.4 cm).

 

Weight

Width:

16.25 inches (41cm) without brackets, 19 inches (48.3 cm) with brackets attached.

Depth: 9.25 inches (23.5 cm).

Weight: 13 pounds (6 kg).

 

Fuse Ratings

AC Power: MDL 0.25 amp Slow Blo.

 

 

Battery: MDL 2.0 amp Slow Blo.

 

 

 

 

 

Temperature

0 to +40 deg. C. (32 to 104 deg. F.) operational.

 

Range:

–40 to +66 deg. C. (–40 to +150 deg. F.) storage and shipment.

 

Humidity Range:

5% to 95% (non-condensing) storage/shipment and operation.

 

 

 

 

 

Altitude:

Sea level to 10,000 ft. operational (1048 to 648 millibars) 40,000 ft. max. shipment.

 

 

 

 

 

Environmental

Locate in an area free of excess moisture, corrosive gases, dust, and chemicals.

 

Battery Backup

Allows up to two hours of operation during a power failure. Total charge time 48 hours.

 

 

 

 

 

Frequency

– 200 Hz to 3.4 kHz ( +3 dB).

 

Response

 

 

 

Output Level

Adjustable to a maximum of –9 dBm.

 

 

 

 

 

Input Impedance

Handset: 220 ohm; Microphone: 600 ohms; Tape: 10K ohms.

 

 

 

 

 

Voice Encoding

8 KHz sampling rate, 8 bits/sample (PCM).

 

 

 

 

 

Interconnect

50 pin, RJ-21 connector providing contact closure message starts.

 

Cable

 

 

19

Page 22
Image 22
Bogen LUMDMU manual Specifications, On the next page give the Aux. Connector pin-out definitions