Bay Technical Associates 525H, 5218H, 528H, 529H owner manual 500H Series DCE to DTE Device

If you are interfacing a DCE device to a DTE device, you must use a one-to-one straight cable as shown in Figure 2. If you are interfacing a DCE device to a DCE device, or a DTE device to a DTE device, you must use a crossed cable as shown in Figure 3. Input handshaking lines are enabled if nothing is connected, allowing the system to operate with only Tx, Rx and GND connected.

500H MODEL - DCE					DTE DEVICE
MALE DB-25					FEMALE DB-25
1	PGND			PGND	1
2	TXD	<		TXD	2
3	RXD		>	RXD	3
4	RTS	<		RTS	4
5	CTS		>	CTS	5
6	DSR		>	DSR	6
7	SGND			SGND	7
8	DCD		>	DCD	8
20	DTR	<		DTR	20

Figure 2 - 500H Series (DCE) to DTE Device

500H	MODEL	- DCE	DCE DEVICE
MALE	DB-25		FEMALE DB-25

2	TXD	TXD	2
3	RXD	RXD	3
4	RTS	RTS	4
5	CTS	CTS	5
6	DSR	DSR	6
7	SGND	SGND	7
8	DCD	DCD	8
20	DTR	DTR	20

Figure 3 - 500H Series (DCE) to DCE Device

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