IBM 1620 - Page 8

(paper-up motion) direction, raise pen. The plotter
result is shown in Figure 1-4.
In the foregoing example, the 1620 will interlock
(wait for the plotter). The duration is approximately
Start
tv\otion
during time
pen was
raised.
1/100"
T
Figure 1-4. Plotter Result for Data of
05555922077779=1:
227-5811-0 (11-63)
330 ms with the 1627 Modell Plotter or "350 ms with
the 1627 Model 2. Timing is computed as shown in
Table 2.
Table 2. Timing
Output Record
1627-1 1627-2
Characters Plotting Time
Plotting Time
0
100
ms
100 ms
5555
13
20
9
100 100
22 7
10
0 100 100
7777
13
20
9
0.3*
ms 0.3* ms
333.3 ms
350.3
ms
* Approxi mately 99.7 ms are ava ilable for 1620 processing before
the 1627 can act on another plotting instruction.
1.3