Quatech Communication Adapters

@5FD8.ADF QUATECH ES-2000/-3000 8 async. RS-422/RS-485
@5FE0.ADF QUATECH QS-1000 Quad asynchronous RS-232
@5FE1.ADF QUATECH MXI-1000 GPIB interface adapter
@5FE3.ADF DS-2000/3000 Dual Asynchronous RS-422/485
@5FE4.ADF QUATECH PXB-7200 Parallel Expansion Board
@5FE5.ADF QUATECH GPA-1000 Game Port Adapter
@5FE6.ADF QUATECH DS-1000 Dual Asynchronous RS-232
@5FE7.ADF SCL-6100 Asynchronous Current Loop/RS-232-C
@5FE8.ADF QUATECH SP-1000 Parallel printer adapter
@5FE9.ADF QUATECH SP-1050 Serial/Parallel port adapter
@5FEC.ADF QUATECH QS-2000 Quad asynchronous RS-422
@5FDA.ADF MPA-2000/3000 Single Channel EIA-530 SYNC. Comms Adapter RS-422/RS-485

Ds-1000.zip Quatech DS-1000 DOS Drivers and Utilities
Ds-2000.zip Quatech DS-2000/3000 DOS Drivers and Utilities
Es-2000.zip Quatech ES-2000/3000 DOS Drivers and Utilities

Quatech DS-1000 Manual
Quatech DS-2000 Manual
Quatech ES-2000/3000 Manual
Quatech QS-1000 Manual
Quatech QS-2000/3000 Manual
Quatech MPA-2000/3000 Manual

Syncdrive Synchronous Communications Software User's Manual, Jun 2001 (MPA adapters)
Quatech Asynchronous Serial Device Driver for OS/2 - User's Manual, Nov 2001
Quatech Asynchronous Serial Device Driver for OS/2 - User's Manual, Mar 2004
   PCI, ISA, PCMCIA, and Micro Channel computers; OS/2 2.11 or later

Quatech - Micro Channel Bus Overview (archived)

Quatech DS-1000
Quatech DS-2000
Quatech ES-2000/3000
Quatech QS-1000
Quatech QS-2000/3000
Quatech MPA-2000/3000
Quatech MXI-1000


Quatech DS-1000 Dual RS-232 Async

CN1 DE9 male connector #1
CN2 DE9 male connector #2
J1,2 DTE/DCE selection
U27,28 16550 ACE
X1 ? xtal

Transmit drivers: MC1488 or compatible
Receive buffers: MC1489 or compatible


Quatech DS-2000 Dual RS-422 Async

CN1 DE9 female connector #1
CN2 DE9 female connector #2
J1 Input clock selection
J2,3 Aux channel header
U9,10 16550 ACE
X1 ? xtal

Transmit drivers: MC3486 or compatible
Receive buffers: MC3487 or compatible

J1 - Input Clock Configuration

Frequency J1
1.8432 MHz 1 & 4, 2 & 3, 5 & 6 closed
3.6864 MHz 2 & 3, 4 & 5 closed
9.216 MHz 1 & 2, 5 & 6 closed
18.432 MHz 2 & 5 closed

J2 - Transmit/Receive Configuration

Function J2
RTS/CTS loopback 1 & 5 closed, 1 & 2 open
Transmit RTS 5 & 6 closed, 6 & 7 open
Receive RTS 1 & 2 closed, 2 & 3 open
RCLK/XCLK loopback 3 & 7 closed, 2 & 3 open
Transmit XCLK 6 & 7 closed, 5 & 6 open
Receive RCLK 2 & 3 closed, 1 & 2 open
AUX OUT/AUX IN loopback 2 & 6 closed, 5 & 6, 6 & 7 open
Half Duplex 4 & 8 closed
Full Duplex 4 & 8 open

J4 - DTR Configuration

Setting J4
-DTR 2 & 3, 5 & 6 closed
+DTR 1 & 2, 4 & 5 closed


Quatech ES-2000 8-ch RS-422 Async, ES-3000 8-ch RS-485 Async

CN1 HDD62 male connector
J1 Input clock selection
J2-5 Aux channel header
J6 Duplex/half-duplex jumper
R2-13 Termination resistors
U4,9,14,19 NS16C552V Dual UART w/ FIFO
U20,21,24,26 Quad RS-422 or RS-485 driver
U25,27,28 Quad RS-422 or RS-485 receiver
X1 18.432000 MHz osc

R2-13 Termination resistors - 100 Ω (ES-2000) or 120 Ω (ES-3000)
U20,21,24,26 MC3487P Quad RS-422 driver (ES-2000) or Quad RS-485 driver (ES-3000)
U25,27,28 MC3486P Quad RS-422 receiver (ES-2000) or Quad RS-485 receiver (ES-3000)

J1 - Input Clock Frequency

Frequency J1
1.8432 MHz 1 & 2, 3 & 6, 4 & 5 closed
3.6864 MHz 2 & 3, 4 & 5 closed
9.216 MHz 1 & 2, 5 & 6 closed
18.432 MHz 2 & 5 closed

J2-5 - Channel RTS/CTS Configuration

Setting J2-5
RTS/CTS loopback 1 & 2, 3 & 4 closed
RTS/CTS handshake 1 & 3, 2 & 4 closed

J2 - channel 1, J3 - channel 2, J4 - channel 3, J5 - channel 4.

J6 - Half Duplex Channel Select

Channel J6/A J6/B J6/C J6/D J6/E J6/F J6/G J6/H
1 Closed Open Open Open Open Open Open Open
2 Open Closed Open Open Open Open Open Open
3 Open Open Closed Open Open Open Open Open
4 Open Open Open Closed Open Open Open Open
5 Open Open Open Open Closed Open Open Open
6 Open Open Open Open Open Closed Open Open
7 Open Open Open Open Open Open Closed Open
8 Open Open Open Open Open Open Open Closed


Quatech QS-1000 4-ch RS-232 Async

CN1 DB37 female connector
CN2 RJ11 connector (not pictured)
J1 Input clock selection
J2-5 Handshake selection (RJ11)
U2,3,11,12 NS16550A ACE
U26 MC1489 receiver? (DB37)
U31 MAX234 driver? (DB37)
U32,34 MC1489 receiver?
U33,35 MAX234 driver?
X1 ? osc

CN2 RJ11 connector - not pictured here, probably overlaps with the DB37 connector outline

If the RJ11 option has been selected, jumpers J2-J5 have been installed to control the output of handshake signals. If the DB37 option has been selected, jumpers J2-J5 have been replaced by additional drivers and receivers to provide all of the available handshake signals.


Quatech QS-2000 4-ch RS-422 Async, QS-3000 4-ch RS-485 Async

CN1 DB37 female connector
J1-4 Aux channel header
J5 Input clock selection
R5-12 Termination resistors
U5,6,12,13 16550 ACE
U25,32 RS-422 or RS-485 driver
U30,31 RS-422 or RS-485 receiver
X1 ? osc

R5-12 Termination resistors - 100 Ω (QS-2000) or 120 Ω (QS-3000)
U25,32 RS-422 driver (QS-2000) or Quad RS-485 driver (QS-3000)
U30,31 RS-422 receiver (QS-2000) or Quad RS-485 receiver (QS-3000)

J1-4 - Channel Loopback Configuration

Setting J1-4
RTS/CTS loopback 1 & 5 closed, 1 & 2 open
Transmit RTS 5 & 6 closed, 6 & 7 open
Receive CTS 1 & 2 closed, 2 & 3 open
RCLK/XCLK loopback 3 & 7 closed, 2 & 3 open
Transmit XCLK 6 & 7 closed, 5 & 6 open
Receive RCLK 2 & 3 closed, 1 & 2 open
AUX OUT/AUX IN loopback 2 & 6 closed, 5 & 6, 6 & 7 open
Half Duplex 4 & 8 closed
Full Duplex 4 & 8 open

J1 - channel 1, J2 - channel 2, J3 - channel 3, J4 - channel 4.

J5 - Input Clock Frequency

Frequency J5
1.8432 MHz 1 & 2, 3 & 6, 4 & 5 closed
3.6864 MHz 2 & 3, 4 & 5 closed
9.216 MHz 1 & 2, 5 & 6 closed
18.432 MHz 2 & 5 closed


Quatech MPA-2000 1-ch RS-422 Sync (EIA-530), MPA-3000 1-ch RS-485 Sync

CN1 DCE DB25 female connector
CN2 DTE DB25 male connector
J1 2-pin jumper
J2 Driver Control Selection
J3 DMA REQ2 Source Selection
R5,6,11-13 Termination resistors
U14 Z8530-8 SCC
U20 MC194C18 µCIC MCA iface
U25,27,28 RS-423 or RS-485 driver
U26 RS-423 or RS-485 receiver
X1 ? xtal
X2 ? xtal

When configured as a DTE, the MPA-2000 uses a DB25 short body male connector CN2. When configured as a DCE, the MPA-2000 uses a DB25 long body female connector CN1.

Due to sagging market demand, the Micro Channel products are no longer being supported by new releases of Syncdrive. The last release of Syncdrive for the MPA-2000/3000 Micro Channel adapter is Release 2.21.


Quatech MXI-1000 GPIB [P] [P]

CN1 GPIB connector
U25 TMS9914ANL GPIB controller
U26 SN75160BN GPIB xciever
U27 SN75162BN GPIB xcievers
X1 ? xtal

Content created and/or collected by:
Louis Ohland, Peter Wendt, David Beem, William Walsh, Tatsuo Sunagawa, Jim Shorney, Tim Clarke, Kevin Bowling, Tomáš Slavotínek, and many others.

Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek.
Last update: 25 Nov 2022 - Changelog | Legal Info & Contact