IBM 1620 Manual Of Instruction

(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

IBM 1620 Specifications

General

Brand	IBM
Model	1620
Category	Desktop
Language	English