Micro-Aide LDM-1 Manual de usuario descargar pdf (Pagina 35)

29

APPENDIX A

TECHNICAL DATA

LDM-1 SPECIFICATIONS

Physical

Length: 8.6"

Width: 5.3"

Height: 1.9"

Weight: 22oz.

Environmental

Storage

Temperature: -20ºF to 180ºF

Humidity: 0% to 95% non-con-

densing

Operating

Temperature: -4ºF to 158ºF

Humidity: 0% to 95% non-con-

densing

Mounting

Shelf or desktop

Construction

Housing

Fully enclosed, anodized alumi-

num

Removable cover allows

access to inside

Externally accessible LEDs and

connectors

Electrical

Single, conformal coated, PCB

inside housing

Power

Voltage

24Vac, from MICRO-AIDE sup-

plied wall mount transformer

Consumption

2.5W, typical

Isolation

Rcv and Xmt channels are fully

isolated from power and DTE

Connectors

DB-25 Female

Configured as DCE

See Figure 7 on page 31

Power

Round male connector

6-Conductor Female

Pin 1: 24Vac

Pin 2: 24Vac

Pin 3: Xmt+

Pin 4: Xmt-

Pin 5: Rcv+

Pin 6: Rcv-

LED Indicators

Power: Red

Carrier Detect: Green

Test 2: Red

Test 1: Red

Clear to Send: Amber

Request to Send: Amber

Receive Data: Red

Transmit Data: Red

Controls

External

Pushbutton Switch: selects

operating mode

Equalization Switch (SW3):

dual switch assembly, 4 set-

tings to compensate for cable

attenuation

Internal

DIP Switch (SW2): Selects

CTS-to-RTS delay of 8, 16, 32

or 64msec.

Jumper AX1: Enables Rcv

channel termination of 150Ohm

Jumper AX2: Enables Xmt

channel termination of 150Ohm

Jumper AX3: Enables Xmt

channel busy detector

Jumper AX5: Connects DTE

signal ground to protective

ground

Operating Modes

Normal

Full duplex over 4-wire network

Test 2 LED: Off

Test 1 LED: Off

Test Mode A

Analog test with digital loop

back

Test 2 LED: On

Test 1 LED: Off

Test Mode B

Analog loop back with DTE data

Test 2 LED: Off

Test 1 LED: On

Test Mode C

Analog loop back with test data

Test 2 LED: On

Test 1 LED: On

Data Characteristics

Format

Fully transparent to all data

Baud Rate

75 to 19,200

Network Configurations

Point-to-Point

Capacity: 2 modems total

Refer to Table 6 on page 31 for

range specifications

Multi-Drop

Capacity: 8 modems total

(1 master, 1 to 7 slave

modems)

No transmission range de-rat-

ing with additional slave

modems

Refer to Table 6 on page 31 for

range specifications

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 47 48

Comentarios a estos manuales

Sin comentarios