8.2 Connect and be sure to tighten the screws on the connector
142
When connecting the HiTESTER and PC/AT (DOS/V)
Use a crossing cable comprising two D-sub 9Pin female connectors.
Connecting a USB Cable
Install a USB driver in the PC before connecting a USB cable.
See "Installation and operation procedures" (p. 143)
After installing the USB driver and connecting the PC as shown in the figure, a
virtual RS-232C COM port is automatically allocated to the USB port.
Recommended cable:
HIOKI
9637 RS-232C
CABLE (1.8 m)
Cross connection
D-sub 9pin female
ST5540/ST5541
D-sub 9pin female
PC/AT
Pin No. Pin No.
DCD 1 1 DCD
RxD 2 2 RxD
TxD 3 3 TxD
DTR 4 4 DTR
GND 5 5 GND
DSR 6 6 DSR
RTS 7 7 RTS
CTS 8 8 CTS
99
Figure 2 Connecting a cable for data communication
RS communications cannot occur simultaneously with USB communications.
Do not connect both an RS cable and a USB cable.
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