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QICWARE Article A0009

Suggested QID Cables or Adaptors

The following article describes the cable type that can be used with the various serial port types available on PCs to connect the Serial Mini QID (Qantel Part #52497-002). The serial mini contains an irregular shaped blue plastic assembly ( 2 inches x 2.4 inches with RS-232, DTE, 25 Pin male Connecto) at one end that is required for proper operation.

Newer PC    [Standard 9 Pin Serial Port, COM1 / COM2  - DTE]
Beklin F2L044-06 (Null Modem/Printer Cable)

Older PC     [Standard 25 Pin Serial Port, COM1 / COM2  - DTE]
Beklin F4A602 (Null Modem)

Other (9 Pin Serial Port - DCE)
Beklin F2L088-06 (Modem Cable)

Other (25 Pin Serial Port - DCE)
No adaptor or cable Required

Most Serial Interfaces follow the EIA/TIA standards listed in the table below, However, if the serial interface on your system is not standard, you will have to build a custom cable.

Signal Description DTE DCE DB-25 DB-9
GND Chassis Ground N/A N/A Shell Shell
TxD Transmitted Data Output Input 2 3
RxD Received Data Input Output 3 2
RTS Request to Send Output Input 4 7
CTS Clear to Send Input Output 5 8
DSR Data Set Ready Input Output 6 6
SG Signal Ground reference reference 7 5
DCD Data Carrier Detect Input Output 8 1
DTR Data Terminal Ready Output Input 20 4
RI Ring Indicator Input Output 22 9

Serial Mini-QID Pin Out

Signal Description DTE DB-25 Required
TxD Transmitted Data Output 2 Yes
RxD Received Data Input 3 Yes
SG Signal Ground reference 7 Yes
DTR Data Terminal Ready Output 20 No
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