1-20. SYSTEM FUNCTIONAL DESCRIPTION
The electronic equipment test facility (EETF) TADS/PNVS Augmentation Equipment is
described briefly in this paragraph and in greater detail in subsequent paragraphs.
The description is given in reference designation order. Refer to FO-1 for
a block diagram of the EETF TADS/PNVS Augmentation Equipment. This paragraph
describes the Augmentation Equipment in the following order:
Dayside test bench 2A1
Test console test bench 2A2
Nightside test bench 2A3
(1) Temperature Control Unit 1A1.
The temperature control unit 1A1 (alternate:
control unit assembly 1A1) is the controller used with three associated heat sources
to make up an ambient range infrared (IR) source system. The heat sources are used in
the nightside test bench optical assembly 2A3A1 to provide program controlled IR
stimulus for performing the various types of IR tests on the TADS night sensor
assembly and PNVS night sensor assembly UUTS.
(2) 488 Controller Power Supply Assembly 1A2.
The 488 controller power supply
assembly 1A2 receives data from the digital computer assembly 1A1O on the IEEE 488 bus
and converts this data into analog signals.
These signals are used to command the
outputs of the programmable power supply assembly 1A3.
(a) The analog outputs are also applied to the A/D converter assembly 2A2A13
which changes the analog signal to digital data.
The A/D converter serves as a high
accuracy digital voltmeter.
(b) The analog outputs from the 488 controller power supply assembly (O to
10 volts with reference to analog common) are applied to the comparator circuits of
four power supplies in the programmable power supply assembly 1A3. Internal feedback
in each power supply is such that the O to 10 volts control the full output range.
(3) Programmable Power Supply Assembly 1A3.
The programmable power supply
assembly 1A3 output voltages are routed to relay assembly 2A2A4A1.
When the relays in
relay assembly 2A2A4A1 are energized, these voltages are applied to connector J1 on
the test adapter panel assembly 2A2A4 and to matrix switch assembly 2A2A1O. The
signals that energize the relays come from multiprogrammer extender assembly 2A2A11.
(4) DC Power Supply Assembly 1A4.
The DC power supply assembly 1A4 consists of
four power supplies.
The output voltages (+28 vdc, +15 vdc, -15 vdc, +5 vdc) are
routed to the cable entry panel 2A2A14 terminal block TB1. From there, the voltages
are distributed throughout the electro-optical test bench set.
(5) AC Control Panel Assembly 1A5.
The AC control panel assembly 1A5 contains
five 15 ampere circuit breakers and a terminal block. The five circuit breakers
supply 115 vac power to plug molds 1J1 and 1J2 in the electronic station, disc/tape
drive assembly 1A1O, digital computer assembly 1A11, and plug molds 2A2W2A1 and
2A2W2A2 in the test console test bench.