1. ALI RAZA POF Wah Cantt
Digital Telephone Exchange
HICOM 300 E
Hi-com 300 is a telephone exchange system from Siemens. This system is installed in Digital
Telephone Exchange in POF, for advanced and modern communication facilities. All the
communication in POFs are being monitored by this section. The maintenance of these units is
under T&I department. This unit is monitored by highly professional and skillful telecom and
electronics engineers.
Installed on: 19th July 2001
Main Features of HICOM 300 E
 Duplex Processor ● Conference Call ● HOT Line
 Voice Mail ● Call Tracing ● Busy Over ride
 Camp ON ● Speed Dialing ● Hunt Groups
 Toll/Code Restriction ● Call Back ● Call Transfer
 Call Forwarding ● Call Pick Up ● Follow Me
 Remote Maintenance ● Call Detail Recording
Instrument & Electronics Section
POF Traffic Signal:
POF traffic Signals are developed by the Instrument and Electronic (I& E)
section of services department. POF traffic signals are controlled by the circuitry installed on the
signals. Which is mainly controlled by the Microcontroller.
POF traffic light signals have the following features
Total Signals : 11
First Signal : Anwar Chowk
Last Signal : Basti Chowk
One Cycle : 68 seconds
Yellow Light : 3 seconds
Pakistan Ordinance Factory traffic signals are made of LED, not from Neon Bulbs. The reason
behind using LEDs are
1. Cost Effective 2. Longevity (long life)

2. ALI RAZA POF Wah Cantt
Public Address System (PA system)
This is an electronic sound amplification and distribution
system with a microphone, amplifier and loudspeakers, used to
allow a person to address a large public, for example for
announcements of movements at large and noisy air and rail
terminals.
Addressable Fire alarm of POF
There are four types of fire detector
 Smoke Detectors
In open spaces under flat horizontal ceilings, every point should
lie within 7.5m of a smoke detector.
 Heat Detectors General
In open spaces under flat horizontal ceilings, every point should lie
within 5.3m of a heat detector.
 ‘Rate of Rise’ Heat Detectors
‘Rate of Rise’ heat detectors respond to both rapid increases of temperature
and to fixed top temperature.
 Fixed Temperature’ Heat Detectors
Fixed temperature heat detectors are available with different temperature settings,
and are normally installed in kitchens, boiler rooms, etc.
 In POF addressable fire alarm system is installed which is developed by the I&E section
of services in POF.
 In POF wah cantt filling factory there are 13 pillars (13 addresses)
 In POF Hawailiyan there are 29 pillars (29 addresses)
 In POF Sanjwal there are 29 pillars (29 addresses)

3. ALI RAZA POF Wah Cantt
All these pillar are connected to main fire station. If somewhere in the factory fire occurs then the
address of the location go to the main fire station and fire brigade activates. POF fire alarm system
was awarded with an honor award for its performance and management.
POF Velocity Measurement Equipment
 Photo Cell Counter Chrono Meter
This method is used to measure the velocity of bullets with zero elevation i.e.
making zero angle with horizontal axis. In this method photo cell is used to detect the
passage of bullet. There are two spots where sensors are fixed, first at 15m apart from the
gun and second 20m away from the first sensor. When the bullet pass from the first sensor
it send a start signal to chronometer and the chronometer starts counting time in
milliseconds. When the bullet pass from the second sensor, it sends a stop signal to the
chronometer and the chronometer stops counting time. Using this method we measure the
time in which bullet travels 20m distance. Then using the formula of velocity as given
below, we can calculate the velocity of the bullet.
𝑉 = 𝑆/𝑡

4. ALI RAZA POF Wah Cantt
 Radar system
Radar is an object-detection system that uses radio waves to determine the range,
altitude, direction, or speed of objects. It can be used to detect aircraft,
ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The
radar dish (or antenna) transmits pulses of radio waves or microwaves that bounce off any
object in their path. The object returns a tiny part of the wave's energy to a dish or antenna
that is usually located at the same site as the transmitter.
POF have total 9 radars for measuring the angular velocity of the bullets fired in a
projectile path. I&E section have 3 radars, one in lab and two at the experimental places.
2 radars are at POF Sanjwal. These are the vibal-radars and these are exported from
foreign countries.

5. ALI RAZA POF Wah Cantt
Conclusion:
I learned a lot in this internship program, this is my best interaction with professionals in
industry. I am inspired by my tutor Mr. Majid Baig. The faculty here is very cooperative and the
facilities provided by POFIT are appreciative.