Cookies This forum uses cookies. Some cookies may have been set already..If you are logged in please click the red X button on the right to accept our cookies and remove this message. ![]() If you continue to use the forum, we will assume you are happy to accept the cookies anyway. If you are not happy to accept the cookies you must stop using the forum and delete our cookies from your browser. (Our use of cookies has not changed, however we are now legally obliged to inform you of their use and gain your consent). Compal ksw01 drivers video. Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. I seem to recall it is a null-modem cable. I have never used Windows, but used to use DOS, 20 years ago. Metex M-3800 Digital Multimeter. $22.50, or METEX Universal-System MS-9170 Frequency. Counter Digital Multimeter (20MHz & up). This manual provides operating and service inlormation for M3600 (B) Series, M 361 OB M 36203 Operating Manual, 9V Battery. (Zinc-Carbon type), Test. Metex service manual m. MODEL: MS-9150/9160. Power Source: Line Voltage 110V/60Hz or 240V/50Hz DMM Section: Single 9V Battery Dimension: 14 1/2'(W) x 61/2'(H) x 12 1/2'(D) Weight: 39lbs Comes with AC Power cord, Test leads for DMM and?Owner's Manual Optional items are Coaxial Cable w/BNC Connector and Rs232C Cable. You needed to use a Baud rate that was not too fast for the particular device, and select which com port. Comm1, comm2, comm3 or comm4 were the only choices if I remember correctly, but usually Comm1 or Comm2. It was always easier if you used a propriety package, though the name of the one I used eludes me. In the early days of USB adaptors, they did NOT work with all hardware, and a true serial port was necessary. Hello, Some time ago I became the owner of a Tenma 72-5085. This appears to be the same device as a Metex MS-9150. Metex Ms-9150 ManualThe posts here got me started on the RS-232 connection of the device. In the end I got it working so I thought I would share my findings. The port on this device is RS-232, using following settings: Baudrate 1200 Databits 7 Stopbits 2 Parity None Handshake None Protocol: D: return the value measured. (Commands are executed after sending a linefeed ' n' character) To get the device connected to my PC a breakout box with lights to check the connections turned out to be very useful. Finally a DB25F-DB9M converter and a DB9F-DB9F gender changer made the proper connections for TxD and RxD (These came from my stock, I guess a DB25F to DB9F should work as well). Using this adapter the connection seemed correct, but I did not see a response on my screen yet. Both RxD and TxD lights were showing activity, the TxD light however was only very faint. This is caused by the implementation of the TxD 'transceiver' of the MS-9150. The schematic of a MS-9150 shows that only TxD and RxD are connected, and that opto-couplers are used for isolation. The implementation of TxD only uses a pull-down between signal ground and the TxD pin using the transistor of the opto-coupler and a 3.3k resistor. This might have worked on old-fashion implementations of a serial port, but in my case it did not. I am using a USB-to-UART converter which did not include a pull-down on RxD to pull the input to idle level when nothing was connected. In my case adding a resistor of 10k between the negative output of the charge-pump of the level shifter of the USB-to_UART converter, and the RxD pin fixed this. The levels used are far from standard-compliant, but the USB-to-UART converter accepts it. With the pull-down resistor communication is working and I can read the measured values on my PC. According to the schematic the RS-232 port is only connected to the multimeter part of the device. Except for the 'D' command for reading the currently measured value I have not been able to find a description of the protocol. I would be interested if anyone has more information. Four of the most often required test instruments combined in one unit. Multifunction unit ideal for education, design, service. Saves space on bench. Includes a triple output power supply, frequency counter, function generator and digital multimeter. Both units come complete with RS232 cable, software, BNC cable, test leads and manual. • Frequency Counter: channel A- 1Hz ~ 20MHz.
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