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printing and produces 4.8-microsecond
pulses.
The timing pulses necessary during
loading of the
l::uf
fer from the CPU are
provided
by
the microprogram.
4.14.2 SINGLESHOT ADJUSTMENTS (FIGURE 4-12)
Refer to Section 4.18 for MCS feature.
Name of Unit or Item
Model 2
Model 7
Cartridge Type
Chain
Chain
Number of Print Positions
132
120
Max. Printing Speed (LPM)
610*
610*
Chain Motor Speed (RPM)
3600
3600
Chain Velocity (IPS)
90.3
90.3
Time Required for Type to move .001"
(Microseconds)
11.1
11.1
Settling for Calibration of Print-Timing
Dial with Print Density Lever set at C
20
20
Timing Disk Speed (RPM)
750
750
Time Required to Print One Line with
Single Space (Milliseconds)
98.3
98.3
Carriage Interlock Time
21.4
21.4
Carriage Type (Speed)
Dual 33 in./sec Single 33in./sec
75 in./sec
*750 (LPM) with MCS feature
**1419 (LPM) with MCS feature
Figure 4-10.
-1
Osc
Osc Trigger
IBM 1403 Reference Chart
1
~0.600
us ( 1403 Model Nl )
l
1 .388 us (1403 Model 2 or 7)
4.14.2.1 PSS (B3E3D04) PR262
Adjust to 15 us +5 us/-0 us, with the
printer idling and T-casting closed.
Model N1
Train
132
1127**
3600
206.0
4.8
--
1714
53.2
20.7
Dual 33 in./sec
75in./sec
Clock
0-1
Clock
1-2
~~n~~~~~~--Jn~~~~~~~
~~~n~~~~~~~--'n~~~~~~-
Clock
2-3
~~~~n
n~~~~~
Clock 3-4
~~~~~n
n~~~-
Clock 4-5
~~~~~--Jn
n~~-
Clock 5-6
~~~~~~~n
n~~
Clock 6-7
~~~~~~~~n
n _
Clock 7-0
'--~~~~~~~n
r
Figure 4-11,.
Print Clock
2025 FEMM (7/69) 4-11
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