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| MIL-T-81290(WP)
TABLE 2
FLOOR SELECTOR OUTPUT VOLTAGES
Voltage Readings - N (+) to h (-)
FLOOR Switch Position
150
10%
5.6 volts DC
250
11.2 volts DC
10%
450
10%
16.8 volts DC
650
10%
22.4 volts DC
900
28.0 volts DC
10%
3.3.10 Readout Timing Requirements
3.3.10.1 DMma Readout Timing. With 28 plus or minus 3 volts DC
applied across pins k (+) and h (-), and 12.750 plus or minus 0.250 volts DC
across pins S (+) and T (-) of connector P3; with FUNCTION SELECTOR in
START, MOTOR START-BATTERY START in MOTOR START, and with DMma-OFF-T4 in
DMma position, DMma readout times on Test Set clock shall be as shown in
Table 3, after application of presaturation, thermal battery start, set-in,
and motor start voltages in the following sequence:
a. Presaturation voltage of 10.000 plus or minus 0.010 volts DC
applied to pin W (-) and to pin F (+) of connector P3 for not less than 2
seconds.
b. Thermal battery start voltage of 20 volts AC plus or minus 10
percent across pins H and R, and across pins R and J, so phased as to pro-
vide 40 volts AC plus or minus 10 percent across pins H and J, for not less
than 1 second.
c. Set-in voltages as shown in Table 3 for 100 plus or minus 0.1
milliseconds across pins F (+) and W (-) of connector P3, after continuity
appears between pins h and g. Rise time of the 100 millisecond pulse shall
not be greater than 150 microseconds and fall time not greater than 250 micro-
seconds. Pulse width shall be measured at the -25 volt level with a -50 volt
set-in. Switching time from presaturation to set-in voltage shall not be
greater than 1 millisecond.
d. Motor start voltage of 20 volts AC plus or minus 10 percent
across pins A and B of P2, and across pins B and C of P2, so phased as to
provide 40 volts AC plus or minus 10 percent across pins A and C of P2, and
applied coincidentally with the end of the 100 millisecond pulse.
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