Black Box MD1640A, MD1641A manual Introduction and Description

CHAPTER 1: Introduction and Description

4)28,800 bps (28.8). This LED behaves differently depending on your connection:

• When the modem is connected at 33,600 bps, it blinks 5 times/sec.;

• When the modem is connected at 31,200 bps, it blinks once/sec.;

• When the modem is connected at 28,800 bps, it is solidly lit. Note: if the modem falls back to 26.4K bps while in V.34 mode, both the 28.8 and 24.0 LEDs light.

5)24,000 bps (24.0). This LED is lit when the modem is connected at 24,000 bps. Note: if the modem falls back to 21.6K bps while in V.34 mode, both the 24.0 and 19.2 LEDs light.

6)19,200 bps (19.2). This LED is lit when the modem is connected

at 19,200 bps.

7)14,400 bps (14.4). This LED is lit when the modem is connected at 14,400 bps. Note: if the modem falls back to 12,000 bps while in V.32bis mode, both the 14.4 and 96 LEDs light.

8)9600 bps (96). This LED is lit when the modem is connected at 9600 bps.

9)2400 bps (24). This LED is lit when the modem is connected at 2400 bps.

10)Off Hook (OH). This LED is lit when the phone line is "off hook". This occurs when the modem is dialing, on-line, or answering a call. This LED also flashes when the modem is pulse dialing in Command mode.

11)Terminal Ready (TR). When the TR LED is lit, the modem is permitted to answer an incoming call. When it goes off, a connected modem will disconnect. The state of the TR LED matches that of the DTR circuit on Pin 20 of the RS-232C/V.24 interface.

12)Error Correction (EC). This LED is lit when the modem is set for V.42 error correction, and flashes on and off when data compression is activated.

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