Aegis Cz20252 User manual

CZ20252

User Guide

CZ20252-ART01-01

IP54

AEGIS CZ20252 User Guide

www.aegis.net.au 1

Thank you for purchasing the CZ20252 TEST PHONE. Before using the

CZ20252 for the first time, please read the following instructions.

Warning:

The CZ20252 Test Phone is a professional

telecommunications tool, especially designed for checking

telecommunications lines. It is not designed to be used on any

other cabling systems, particularly mains powered systems

with nominal voltages of AC100~125V 50/60Hz or

AC200~250V 50/60Hz. Mains power will cause the risk of

electric shock or product damage. You must ensure the

telecommunication line the CZ20252 is being connected to is

suitable and free from hazardous voltages before using the

CZ20252.

Therefore, we recommend the user before using the CZ20252,

on unknown line voltages set the test set to Vdc mode and

verify the line voltage through the LO and HI indicator LED’s .

Packing List

Before you begin using your CZ20252, please make sure you

have received all components:

Test Phone

Line cord with Banana Plugs

Crocodile Clips

User’s Manual

Replacement fuse x 2

If any of these items are missing or damaged, contact your

distributor or sales representative immediately.

AEGIS CZ20252 User Guide

2www.aegis.net.au

Introduction

The Aegis CZ20252 Test Phone comes with all the functions you need

to complete your job in the fastest most cost effective manner.

Waterproof and dustproof to IP54 and its robust construction ensures it

will withstand the rough and tumble of everyday use in the field.

The CZ20252 is an advanced Test Phone used by installers, linesmen,

and repair technicians to test copper wire voice subscriber lines. It is

easy to use, featuring two-way hands-free operation, speed dialling, last

number recall, and voltage/continuity/polarity testing.

Features

1. IEC/EN 60529 IP54

2. Rugged construction for drop and knock proofing

3. Speakerphone for convenient two-way, hands-free conversation

4. High impedance monitor mode (DSL safe)

5. Direct dial number – hotkey (M1)

6. Last number redial

7. Store up to twelve 16-digit numbers (speed dialling)

8. Auto ‘off’ feature turns off speaker (3 mins) to save battery

9. LED indicators for voltage

10. LED indicator for polarity

11. LED indictor for low battery

12. Line continuity testing

13. Tone and pulse operation

14. PBX pause button.

15. Mute button

16. Electronic volume control

17. Audible electronic ringer

18. Relocatable steel locking belt clip

19. Banana plugs and crocodile clips – also suitable for use with Aegis

QuickSwitch adaptors for Krone, Quante, 3M, Siemens, etc

20. RCM and CE approved

AEGIS CZ20252 User Guide

www.aegis.net.au 3

Physical Characteristics

Fig.1 Physical Characteristics

1. Speakerphone microphone

2. Keypad

3. Talk/Monitor/VDC switch

4. Battery Compartment (9V battery)

5. Fuse (in battery compartment)

6. Speakerphone/Monitor amplified speaker

7. Line cord strain relief

8. Optional Belt Hook location (2 places)

9. Handset receiver

10. Increase volume button

11. Handset/Speakerphone button

12. Reduce volume button

13. Handset Microphone

AEGIS CZ20252 User Guide

4www.aegis.net.au

Fig.2 CZ20252 Keypad and Overlay

Keypad control and indicators:

RCL

:Button - Recall

PPS/DTMF

:Button - Tone/Pulse

MUTE

:Button - Mute

Vdc

:Button – VDC. Inspects the incoming ring voltage

and tests the voltage of the line

CABLE

:LED – Tests the telecommunication line’s

continuity. On a well-connected line the CABLE

LED illuminates red

Vdc

:LEDs - Voltage line level indicators

PSE

:Button - PBX pause

STO

:Button – Storage of speed dial numbers

:Button – Direct dial number

10.

LNR

:Button - Last number redial

11.

POL +

:LED – Polarity positive

12.

POL -

:LED – Polarity negative

13.

LO BATT

:LED - Battery low

14.

MUTE

:LED – Mute. When lit, MUTE is on

AEGIS CZ20252 User Guide

www.aegis.net.au 5

Operation

Before Operation

1. Remove the battery hatch and install 9V battery

in the battery compartment ensuring correct polarity.

2. Ensure the telecommunications line to be tested

does not have a hazardous voltage present before

connecting the Test phone.

Talk/Vdc/Monitor switch

The CZ20252 has three basic modes of operation: Vdc, Talk, and

Monitor modes. The CZ20252 should always be connected in the Vdc

position initially to monitor for any high voltages. If high voltages are

indicated do not commence testing. Once the line is confirmed to be

safe for a test connection always use Monitor mode to listen for any

active services before switching to Talk mode to prevent disconnecting

an active service.

Operating the CZ20252 in Vdc mode

Line voltage test

1. Set the function switch to “Vdc” position.

2. Connect the CZ20252 to the telecommunications line

3. Press Vdc button to measure the voltage.

4. Indication of the voltage level is shown by the Vdc LED

indicators. If neither LED is lit the detected voltage is <24VDC.

Otherwise the voltage range is indicated by a combination of

the LED’s illuminates as shown in the following table:

DC voltage-indication list

LED(LO) Green than

transitions to red

Higher than 24V

Red

Higher than 100V

LED(HI) Green than

transitions to red

Higher than 120V

Red

Higher than 200V

AEGIS CZ20252 User Guide

6www.aegis.net.au

Caution:

1.The range of the voltage test must be lower than 250V

and the function switch must be set to “Vdc” position;

otherwise the fuse may be damaged.

2.An AC line voltage is converted into a DC voltage by the

CZ20252 internal transformer.

Telecom Line Continuity test

To check for continuity on the telecommunication line, you can do

so by the following steps:

1. Connect the two sides of the telecom line onto the

crocodile clips on the lead plugs.

2. Set the function switch to “M” position.

3. Press Vdc button.

If the CABLE led illuminates, it means there is a good continuity

on the telecommunication line. If the CABLE LED does not

illuminate it indicates the telecommunication line does not have a

good continuity.

Operating in Monitor Mode

The M (monitor) position provides a high impedance coupling to allow

line monitoring without disrupting conversations or signalling. Set the

function switch to “M” position and then press the SPKR button to listen

onto the telecommunication line through the test telephone’s speaker. If

there is an audible signal on the telecommunication line the signal will

be amplified through the speaker. If there is no audible signal on the line,

circuit noise will be amplified through the speaker. In monitor mode

ensure the circuit connect test feature is turned off. Otherwise this will

introduce some telecom line crosstalk and result in low sound.

Operating in Talk Mode

The ‘T’ (Talk) position provides an off hook connection for dialling and

talking as a common telephone.

Audio Controls Keys

The audio control keys (VOL + / SPKR / VOL -) let the operator switch

AEGIS CZ20252 User Guide

www.aegis.net.au 7

between the handset or speakerphone and control the volume of the

audio output. The SPKR button turns the speakerphone on and off,

providing two-way, hands-free conversation. The VOL+ and VOL- keys

control the audible sound level.

Tone/Pulse button

The PPS/DTMF button toggles between pulse and tone dialling modes.

Some older phone systems require pulse dialling whilst newer systems

use tone dialling. Either mode is supported. When the CZ20252 is in

tone dialling mode, pressing the PPS/DTMF button will switch it to pulse

dialling mode. Pressing the button again will switch back to tone dialling.

Speed Dialling Numbers Storing

The STO button is used to store numbers in memory. There are 12

memory locations (keys 0 through 9, * and #), with each capable of

storing up to 16 digits.

To store a number:

1. Set the function button to “T” position.

2. Dial the number to be stored

3. Press STO button

4. Press the key for the desired memory location.

The number will be stored on the selected key.

Dialling using Recall key

The RCL key is used to recall a number stored in memory. When

connected to an active telecommunications line, select Talk mode to get

a dial tone, and then press RCL and the key for the memory location of

the number you wish to dial. The number will be automatically dialled.

To dial the stored number

1. Set the function button to “T” position

AEGIS CZ20252 User Guide

8www.aegis.net.au

2. Press RCL button

3. Press the key for the memory location (keys 0 through 9, *and #)

Direct Dial

The M1 key provides direct dialling of one stored number. The number

for the M1 key can be stored using the same process as for storing

speed dial numbers, just select the M1 key to store the number to.

When connected and dial tone is available, the CZ20252 will dial the

number when the M1 key is pressed.

Last Number Redial

The LNR key redials the number most recently dialled. If you use LNR

but the line is busy, switch the Talk mode to Vdc position to hang up and

then switch back to Talk mode again, then press the LNR key to redial

once again.

Pause

There are some cases where it may be necessary to insert a pause

between digits of a stored number, such as when accessing a trunk

through a PABX that requires a 9 to get an external line. To store a

number with a pause, simply press the PSE button at the point where

the pause is required. For example, 9’PSE’123456781212 would be

used when 9 was required for an outside line and you wanted to store

the number 12345678. The PSE button inserts a 4 second pause.

Mute function

The mute button in Talk mode will quieten the sound, which will remove

environment background noise and assist the receiver to clearly hear

the conversation.

Polarity Identification

The polarity LEDs automatically illuminate to show line polarity. For

example, the right red POL+ LED will light when you connect the red

test lead to ring (positive) side of the line and the black test lead is

connected to the tip (negative) side of the line. The left red POL- LED

will light if the test leads are reversed.

AEGIS CZ20252 User Guide

www.aegis.net.au 9

Battery

If the LO BATT LED lights, the battery needs to be changed.A low

battery can lead to malfunction and incorrect readings.

Prolonging the CZ20252 battery life

There is no complete power off mode with the CZ20252. To maximise

the battery life in the CZ20252, ensure the following recommendations

are adhere to:

- Function switch set to the Vdc position when storing.

- Ensure the Mute LED is not illuminated when storing as the

battery will be drained by the LED.

- Ensure the Mute button is off before storing the CZ20252 to

avoid unnecessary battery drain.

- The speaker draws the most power than any other circuitry in

the CZ20252. The battery life lasts longer if the speaker is

used in moderation.

Note: The CZ20252 speakerphone function will automatically turn off

after approximately three minutes if there has not been a signal greater

than -30 dB in that period. Any signal greater than -30 dB resets the

timer and keeps the speaker turned on.

AEGIS CZ20252 User Guide

10 www.aegis.net.au

Test Phone Trouble Shooting

1.If there is any crosstalk in use, generally it is interference from

the telecom line so reduce the volume to reduce the

interference. Alternately, it can be a poor connection to the line

under test so check your connections.

2.If any abnormal situation is found while you are using the

CZ20252 please follow your safety procedures before

proceeding. If safe, test an alternate telecommunications line

to identify the possible fault, referring to the trouble shooting

list below.

3.If the CZ20252 still doesn't work after basic troubleshooting,

please return the unit to an authorized service centre for

investigation.

Defect Situation

Possible Problem

Solution

Dead, Doesn’t work Blown fuse Replace fuse

No tone

Connection to

telecommunications line is

poor

Check connections to

telecommunications line

Speakerphone

doesn’t work

MUTE function is on.

Check MUTE LED

indicator

Press the MUTE button

and check if the MUTE

LED is off

Short rings only

1. Low battery

2. The test phone is

intermittently connected

to a telecommunication

line.

1. Change new battery

2. Confirm the test

telephone is

adequately connected

to the right telecom line

Cannot hear the

conversations in

Monitor mode

1. The switch is not set to

“M” position

2. The SPKR button is off

3. Low battery

1. Set the switch to “M”

position

2. Press the VOL+ button

to increase volume

3. Change a new battery

Crosstalk

1. Connection to

telecommunications

line is poor

2. I

nterference from the

telecom line

1. Check connections to

telecommunications

line

2. Reduce the volume to

reduce the interference

Stored

numbers/Memory

doesn’t work