Operating instructions

LOCAL OPERATION
3-90 46882-311D
Test results held in the Service Monitor memory stores or on memory cards can also be printed.
The procedures for these operations are described earlier in this chapter. See Stores,
settings/results, on page 3-82 and Printing from memory cards, on page 3-87.
Parallel printer port option
Parallel output
The parallel printer port option provides an output suitable for direct connection to a parallel
drive printer. Fig. 3-27, Parallel printer port socket contacts, shows the pin numbering of the
socket and Table 3-1,
Parallel printer port connections, shows the function of the socket
connections.
Pin connections
13
25
1
14
Fig. 3-27 Parallel printer port socket contacts (as seen facing panel)
Table 3-1 Parallel printer port connections
Contact Function Contact Function
1 Strobe 10 ACK
2 Data 0 11 BUSY
3 Data 1 12 PE
4 Data 2 13 SLCT
5 Data 3 14 to +5 V via R
6 Data 4 15 ERROR
7 Data 5 16 to +5 V via R
8 Data 6 17 to 0 V via R
9 Data 7 18 to 25 Ground
Accessory port (rear optional)
As well as the parallel printer output, this option also provides an accessory port which allows the
control of external devices by logic control from the instrument. Fig. 3-28, Rear accessory port
socket connections, shows the pin numbering of the socket and Table 3-2,
Rear accessory port
connections
, shows the function of the socket connections. Fig. 3-29, Simplified diagram of rear
accessory port switching shows the switching associated with the port.
Switches 1(a) to 1(d) are parts of a multi-pole rocker switch, mounted on the printed circuit board
within the option assembly. By setting these switches, the user has the option of logic level
output on the appropriate pins or of closing contacts between pairs of pins.
Pin Connections
5
9
1
6
Fig. 3-28 Rear accessory port socket connections (as seen facing panel)