Astronics Max-Viz 1500, Information Manual

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Astronics Max-Viz Max-Viz 1500 3091-00019 Rev M
Sensor
Connector
Pin No.
Description Recommended Wire Power Supply
Connector Pin No.
20 20
21 RS 170 Video RG-179 (Pic Wire &
Cable P/N V76261) 21
22 RS 170 Video RTN Coax shield/Braid 22
3.1.2. Interconnect Pin-outs From Power Supply and Aircraft
The cable harness from the Power Supply to the aircraft can be fabricated from
standard 22 AWG aircraft wire (e.g., M27500 twisted shielded pair). If the harness to
the Power Supply is longer than 12 feet, a larger AWG size is recommended (video coax
excluded).
Pin Number Description Recommended Wire
1 + 28 VDC 22 AWG Shielded TP1
2 28 VDC RTN 22 AWG Shielded TP1
3 + 28 VDC 22 AWG Shielded TP2
4 28 VDC RTN 22 AWG Shielded TP2
5 Chassis/Shield 22 AWG
6
7
8
9 ZOOM_IN 22 AWG
10 NUC_IN 22 AWG
11
12 RS 170 Video RG 179 (Pic Wire & Cable P/N V76261)
13 RS 170 Video RTN Coax shield/braid
Notes:
1. A discrete input (ZOOM_IN) is provided to control the field of view (FOV)
switching function as follows:
a. Left open or grounded to 0 volts (< 2 volts), the wide angle, 53°, FOV is
selected.
b. Held at 28 volts (> 7 volts), the narrow angle, 30°, FOV is selected.
2. The 28 V discrete input is provided to control the Non-Uniform Correction (NUC)
function as follows:
a. Left open or grounded to 0 volts (< 2 volts), NUC automatically occurs at
programmed intervals.
b. On transition from 0 to 28 volts (> 7 volts), one NUC cycle occurs and
then further NUC cycles are inhibited until the input goes back to 0 (< 2
volts).
c. On transition from 28 to 0 volts (< 2 volts), one NUC cycle occurs and
then further NUC cycles automatically occur at programmed intervals.