Interface Electronics Specifications; Interface Configuration - Tandon TM-100-1 Operating And Service Manual

3.3 INTERFACE ELECTRONICS SPECIFICATIONS
All interface signals are TTL compatible. Logic true (low) is
+
0.4 V (minimum) . Figure 3-2 illustrates the interface
configuration. The maximum interface cable length is ten (10) feet.
TR UE
DR IV ER
TWI ST ED PAIR
TRANSMI SSION LINE
~
10 FEE T
Figure 3-2
Interface Configuration
• SV
I
RECE I VER
I
I
I
I
150 OHMS
74 LS04 OR EQUIVA LE NT
It is recommended that the interface cable be flat ribbon cable, with a characteristic impedance of 100 ohms (or
equivalent twisted pairs).
Interface connector pin assignments and power connector pin assignments are given in Table 3-2 and Table 3-3.
3-3