Lake Shore Model 421 - RELAY Terminal Block Details

Lake Shore Model 421 Gaussmeter User’s Manual
Service 6-5
Terminal Block Connector
Lake Shore P/N 106-741
Slides into RELAY slot
at rear of Model 421
NC
C
NO
Insert wire
into slot
Use screwdriver to
lock or unlock wires
C-421-6-4.eps
PIN DESCRIPTION
1
2
3
Normally Closed (NC)
Common (C)
Normally Open (NO)
Figure 6-4. RELAY Terminal Block Details
54321
SERIAL I/O (DTE)SERIAL I/O (DTE)
87
69
View Looking At Rear
Of Model 421
C-421-6-5.eps
Model 421 Gaussmeter (DTE) Computers and Printers (DTE)
DE-9P DB-25P DE-9P
Pin Description Pin Description Pin Description
1 No Connection 2 TD (out) 1 DCD (in)
2 Receive Data (RD in) 3 RD (in) 2 RD (in)
3 Transmit Data (TD out) 4 RTS (out) 3 TD (out)
4 Data Terminal Ready (DTR out) 5 CTS (in) 4 DTR (out)
5 Ground (GND) 6 DSR (in) 5 GND
6 Data Set Ready (DSR in) 7 GND 6 DSR (in)
7 Data Terminal Ready (DTR out) (tied to 4) 8 DCD (in) 7 RTS (out)
8 No Connection 20 DTR (out) 8 CTS (in)
9 No Connection 22 Ring in (in) 9 Ring in (in)
Figure 6-5. SERIAL I/O (DTE) Connector Details