CONTENTS
1 General Directions
3
2 Technical data
4
3 Complete set
5
4 Safety Precautions
6
5 Design of device
6
6 Order of operation
9
6.1 Setting of Device in Working Position
9
6.2 Preparation of Device for Operation
9
6.3 Operation with Device
10
7 Maintenance
12
8 Possible derangements and methods of their elimination
14
9 Rules of storage
15
10 Acceptance certificate
15
Supplements:
1 Restoration of absorbing capacity of silica gel
16
2 Figures
17
The device is subject to continuous development and improvement, consequently it may incorporate
minor changes in detail from the information contained herein.
1 GENERAL DIRECTIONS
Binocular observation device PNB-3 (PNB-3-
1) “Sokol” is designed for observation and determination
of angular coordinates of objects observed from the stationary and temporary observation posts by day
and night by the light of searchlights.
As distinct from PNB-3-1 device PNB-3 is complete with a tell-tale pipe, system of illumination and
storage battery NK-13.
The device can operate in the open air at a temperature from minus 40 °C to 50 °C and relative humidity
up to 80%.
For faultless operation of the device it is necessary to keep to the following rules:
- protect the device against impacts and damage;
- avoid touching the optical pieces with hands;
- remove dust, dirt and moisture from the optical pieces with a clean tissue;
- replace the desiccator in due time.
Caution! It is prohibited to direct the device if the brake flywheels 8 (Figure 1) are squeezed and 11 (Figure
3).
Prior to using the device one should study the rules of handling and the order of operation with the
device.
