M0452/100 CHESIVALE ELECTRONICS, M0452/100 Datasheet - Page 2

• Manufacturer Part Number: M0452/100
• Description: TESTER, TELEPHONE, DSP, COMPACT
• Manufacturer: CHESIVALE ELECTRONICS

Specifications of M0452/100

• Meter Display Type: LED
• Operating Temperature Range: -5°C To +40°C

• Long Line Operation
• DC Resistance
• Monitor Impedance
• Dialling
DSP- Digital Services Protection
The Compact DSP Test Set is designed to operate
safely in situations where telephone wiring may be
carrying digital traffic, voltage feed to remote
electronics or the hazardous voltages that result
from fault conditions or misuse of the cable.
When set to OFF mode, on connection to a circuit,
the test set sounds an alarm to alert the user to the
presence of voltages above 75V DC (nominal).
These voltages are normally present on circuits
carrying digital services. If the circuit is active, the
user can select MONITOR mode and listen to the
sound to determine if the circuit is carrying digital
services without disrupting the traffic.
Selecting TALK mode will stop the alarm signal and
loop the line without damage to the test set. If the
alarm signal persists, it indicates that the voltage
on the line is above 120V (nominal). In this case the
line is not looped avoiding damage to the test set as
well as alerting the user to the presence of
hazardous voltages.
Accessories
Connection of a headset provides
hands free communication.
Specifications
Ordering Information
With a 48V feed > 5kΩ loop, minimum current < 10mA
Off-hook:
On-hook:
>100kΩ @ 1kHz
Pulse Dial: 10pps, break 60%
DTMF/Tone dial level: - 3dBm typical
Flash/Timed Break Recall: 100mS
(switchable 600mS, 300mS)
Compact DSP including
battery & M0459-00 line cord
Line Cord Options:
Crocodile clips
BT Plug
RJ11 Plug
Chesilvale Electronics / Subsidiary of Greenlee Textron, Unit 3, Maesglas Industrial Estate, Newport, NP20 2NN, U.K.
Idle: > 5MΩ (10uA @ 48V DC)
Monitor: > 5MΩ (20uA @ 100V DC)
TALK modes (Handset & Headset): < 300Ω
S P E C I F I C AT I O N S U B J E C T T O C H A N G E W I T H O U T N O T I C E
Tel: [phone] Fax: [phone] Web: www.cve.co.uk Email: contact @ cve.co.uk
Part Number
M0452-00
M0459-00
M0459-01
M0459-02
All DSP features work even if the battery is flat or not fitted.
24 to 66 Volts
120 to 400 Volts
75 to 120 Volts
• Memory Dialling
• PBX Pause
• Alkaline Battery Life
• Low Battery LED
• Automatic Power Shut off
• Environmental
32 digit Last Number Redial
2 seconds (can be chained and stored in memory)
1 year normal use or 5 days continuous monitor
of very loud signal
Red LED indicates 2 hours of continuous monitor remaining
5 minutes after disconnection
Operating temp: -5ºC to +40ºC Storage: -20ºC to +70ºC
High resistance to impact, Weatherproof: IP30
Headset
Crocodile clips & ground start
Alligator clips
Alligator clips & ground start
PA RT N O . P 0 0 0 - 0 1 - 0 0 4 1
The telephone network is a
mixture of circuits carrying
analogue or digital traffic and
power feed to high bit rate
digital services equipment.
leads can easily
A variety of test
be connected
via a standard
RJ11 connector.
I S S U E 1
PCM 11/ HDSL
N O V. 0 0
Part Number
M0459-20
M0459-03
M0459-10
M0459-11