Black Box DB25 Network Router User Manual
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Black Box DB25, a versatile data broadcasting solution, empowers you to transmit serial data from any asynchronous device to up to eight printers, modems, or terminals simultaneously. Its ability to regenerate and broadcast RS-232 signals ensures reliable data distribution without signal degradation. With three leads on each port connector for Transmit Data, Receive Data, and Signal Ground, this device offers seamless connectivity. The jumpered pins and internal connections enhance signal stability and ensure efficient data transmission.
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© 2005. All rights reserved.
Black Box Corporation.
Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com
• e-mail: [email protected]
DATA BROADCAST UNITS
DB-8
COMP
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 PWR
RESE
T
MODE
SWIT
CH
BC
FB
BC
MODE
FB
PARALLEL
DATA
ALLBACK UNIT
BROADCAST/F
PORT
B
BUSY
POW
ER
A
DB-8/25
CHANNEL
4 5 6
COMP
1 2 3
7 8
PWR
BUFFERED DA
TA BROADCAST
MASTER
CHANNEL
PORTS
0 1 2
3 4 5
6 7 8
PWR
Send serial data to up to eight printers or terminals at once.
Or send parallel data to two printers simultaneously.
Key Features
Data Broadcast Units:
Fully regenerate an async host signal and broadcast it out to eight slave ports.
Choose from DB25 or RJ-11 versions.
Buffered Data
Broadcast Units:
Port buffering lets your connected devices receive data continuously, regardless of their speeds.
Parallel Data Broadcast/Fallback Unit:
Sends parallel data to two printers at once, or “falls back” for continuous data output.
I f you want to transmit data to more than one printer or terminal at the same time, choose among our Data Broadcast Units,
Buffered Data Broadcast Units, and Parallel Data Broadcast/
Fallback Unit. These solutions get the job done—without losing signal strength!
Data Broadcast Units
The Data Broadcast Units enable you to transmit data from any serial async device to up to eight printers, modems, or terminals simultaneously.
The Data Broadcast Units take the RS-232 signal from your async host, divide it among eight slave ports, and then completely regenerate and broadcast each of those new port signals to their respective devices.
There’s a model for DB25 cabling and one for RJ-11 cabling to fit your needs. The DB25 model is available in 115- or 230-VAC versions.
Buffered Data Broadcast Units
The Buffered Data Broadcast
Units function in the same way as the Data Broadcast Units, but they also feature individually buffered ports. These let you send async data to devices operating at various speeds. You can configure each port for word structure, baud rate, flow control, and DTE or DCE operation.
Versions are available for 115or 230-VAC power.
Parallel Data Broadcast/
Fallback Unit
This unit lets you send parallel data to two printers simultaneously, or designate a backup printer in case your primary printer fails.
6/1/2005 #12252
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Distribute an on-line data service throughout a corporation using a Data
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Technically Speaking
T he Data Broadcast Units and
Buffered Data Broadcast Units regenerate a serial RS-232 async signal and send it to up to eight terminals or printers simultaneously. The Parallel Data Broadcast/Fallback Unit sends parallel data to two printers at once, or operates in fallback mode to support a backup printer in case your primary printer fails.
Data Broadcast Units
• The DB25 model supports three leads on each port connector: Transmit Data
(TXD), Receive Data (RXD), and Signal Ground (SG).
Pins 4 and 5 are jumpered internally. Also, pins 6, 8, and
20 are tied internally. The input to the Composite port is regenerated and simultaneously sent out on the output lead of each of the eight slave ports, channels
1 through 8.
• The RJ-11 model supports pins 2, 3, and 7 only. You will need to order male or female
RJ modular adapters for use with this model. See page 4.
Buffered Data Broadcast Units
• These units have an internal buffer that is dynamically allocated to the individual ports. “Dynamic allocation” means that a varying amount of buffer is given to each port as it needs it, instead of having a set size of buffer for each port. Additional buffer amounts can be shifted to
2 ports that are receiving information faster than they can transmit it out to another port(s). Since this allows the buffer to be used most efficiently, system throughput increases. The dynamic allocation works in both directions—when a host is transmitting to the ports and when the ports are transmitting to the host.
• Buffered Data Broadcast
Units support four slave devices and one master device. They have 32 KB of
RAM, with approximately
29.4 KB devoted to buffering.
You can expand their channel port capacity and/or RAM with the following items:
• A 4-Port Expansion Card that provides 4 additional input ports.
• A 32-KB Memory Expansion
Card that also provides
25.4 KB more bytes of buffer.
Parallel Data Broadcast/
Fallback Unit
• A front-panel switch lets you select from two modes.
• Broadcast mode enables you to get printouts from two locations at the same time.
• In fallback mode, if your primary printer fails, your output will automatically switch to an identical secondary printer, so you will be sure to get your printout.
Specifications for the Data Broadcast Units
CE Approval: TL158AE-R3 Flow Control: Software only, transparent to speed and data
Interface: RS-232 (DTE/DCE)
Pins Supported:
TL158A-R4, TL158AE-R3: 4, 5, 6, 8, and 20;
TL159A: 2, 3, and 7
Connectors:
TL158A-R4, TL158AE-R3:
(9) DB25 F;
TL159A: (9) RJ-11 F
Protocol: Async
Speed: Transparent
Indicators: (10) LEDs: PWR,
Channels 1 through 8 active,
COMP active
User Channels: 8
Power: TL158A-R4: Wallmount power supply, 115 VAC, 60 Hz
@ 50 mA, 60 W;
TL158AE-R3: External power supply (IEC connector),
230 VAC, 50 Hz;
TL159A: Wallmount power supply,
120 VAC, 60 Hz, 6 W
Size: TL158A-R4, TL158AE-R3:
2.3"H x 12.2"W x 11.1"D
(5.8 x 31 x 28.2 cm);
TL159A: 1.5"H x 5.5"W x 8.5"D
(3.8 x 14 x 21.6 cm)
Weight: TL158A-R4, TL158AE-R3:
8.3 lb. (3.8 kg);
TL159A: 2.4 lb. (1.1 kg)
Specifications for the Buffered Data Broadcast Units
Buffer Size: 32 KB (expandable to
64 KB with optional TL484)
Speed: 110 bps to 19.2 kbps (port selectable)
Indicators: (10) LEDs: (1) Power,
(9) Port Activity
Data Format: Each port can be configured for 7 or 8 bits; odd, even, or no parity
Flow Control: Hardware or software, transparent to speed and data
Pins Supported: 1, 2, 3, 4, 5, 6, 7, 8,
20, and 22
Protocol: Async, ASCII
User Channels: 4 (expands to 8)
CE Approval:
TL160A-R2, TL160AE-R2, TL160-C
Interface:
RS-232, DTE/DCE selectable
Connectors:
TL160A-R2, TL160AE-R2:
(5) DB25 F; with TL160-C: (9) DB25 F
Operating Environment:
Temperature: 32 to 113°F
(0 to 45°C);
Humidity: Up to 95% noncondensing
Mean Time Between Failures
(MTBF): TL160A-R2, TL160AE-R2:
20,000 hours; with TL160-C: 16,000 hours
Power:
TL160A-R2: Wallmount power supply, 115 VAC, 60 Hz, 175 mA,
20 W;
TL160AE-R2: External power supply (IEC connector),
230 VAC, 50 Hz, 90 mA, 20 W
Size: TL160A-R2, TL160AE-R2:
2.3"H x 12.2"W x 11.1"D
(5.8 x 31 x 28.2 cm)
Weight: TL160A-R2, TL160AE-R2:
7.5 lb. (3.4 kg);
TL160-C: 8.1 lb. (3.7 kg)
Specifications for the Parallel Data Broadcast/Fallback Unit
Data Format: Parallel, 8 bits
Flow Control: Busy, acknowledge busy
Speed: 40,000 characters per second
NOTE: In fallback mode, use identical parallel printers.
The initialization string sent to the primary printer does not carry over to the secondary printer.
Indicators: (6) LEDs: Power, Busy,
Port A, Port B, Broadcast Mode,
Fallback Mode
Power: Wallmount power supply,
115 VAC, 60 Hz
Switches: (1) Mode toggle switch, toggles between broadcast (BC) and fallback (FB)
Interface: Centronics ® parallel compatible and IBM ® PC
Connectors: (3) DB25 F
Size: 2.1"H x 6"W x 8.1"D
(5.3 x 15.2 x 20.6 cm)
Weight: 2.1 lb. (1 kg)
What’s Included
All models include a power supply and a users’ manual.
3
4
Ordering Information
ITEM CODE
Data Broadcast Units
DB25
115-VAC .................................................................................................................................................................................TL158A-R4
230-VAC...............................................................................................................................................................................TL158AE-R3
RJ-11.................................................................................................................................................................................................TL159A
To rackmount the DB25 models, order…
Rackmount Bracket .............................................................................................................................................................................TL486
The RJ-11 model requires…
RJ Modular Adapter
Male.....................................................................................................................................................................................................FA252
Female.................................................................................................................................................................................................FA253
For optimum performance and a 20% savings, order…
RJ-11 (4-Wire) Modular Cable, Straight-Pinned, 7-ft. (2.1-m) .........................................................................................EL04MS-07
RS-232 Cable, 25-Conductor, 10-ft. (3-m) .........................................................................................................................ECM25C-0010
Buffered Data Broadcast Units
115-VAC .....................................................................................................................................................................................TL160A-R2
230-VAC...................................................................................................................................................................................TL160AE-R2
To enhance your Buffered Data Broadcast Units, order…
4-Port Expansion Card ....................................................................................................................................................................TL160-C
32-KB Memory Expansion Card........................................................................................................................................................TL484
For optimum performance and a 20% savings, order…
RS-232 Cable, 25-Conductor, 10-ft. (3-m) .........................................................................................................................ECM25C-0010
Parallel Data Broadcast/Fallback Unit .........................................................................................................................................PI070A
For long-distance connections, order a pair of…
Short-Haul Modem-B Parallel-T (Transmitter)
Standalone ....................................................................................................................................................................................ME806A
Card................................................................................................................................................................................................ME806-C
Short-Haul Modem-B Parallel-R (Receiver)
Standalone ....................................................................................................................................................................................ME807A
Card................................................................................................................................................................................................ME807-C
For printer connections…
Parallel Printer Cable, 10-ft. (3-m), Male/Male.......................................................................................................EYN600-0010-MM
For CPU connections…
Extended-Distance/Quiet Cable, 25 Conductors, 10-ft. (3-m), Male/Male....................................................EMN25C-0010-MM
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