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V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
14.
Surge Withstand Capability
(SWC)
15.
Power Requirement
16.
Card Dimension
17.
Environment
Operating Temperature :
Storage Temperature
Relative Humidity
3.4.2
VR-2444 Voice & Data Modem Specifications
1.
Microprocessor
2.
Memory
3.
Data Rate
4.
Operation Mode
5.
Operating Format
6.
Transmitter Output Level :
7.
Receiver Input Level
8.
Digital Interface
9.
Isolation
- Input to Phone Line
- Line to Line (TX to RX)
10.
Voice Module
12.
Signaling
12.
Compatibility
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ANSI/IEEE C37.90.1-1989
:
( Differential Mode Only )
3KV Oscillatory Test
5KV Fast Transient Test
:
+5VDC ±5%, 250mA
:
160mm * 100mm
-20°C to 65°C
:
-40°C to 85°C
:
10% to 95% non-condensing
:
8051 Intel
:
64KB Flash，2KB SRAM
（Microprocessor included)
:
300 / 600 / 1200 / 2400 / 9600 BPS
:
Half or Full Duplex
4-Wire Lease Line
FSK Modem configurable
:
Transparent (Asynchronous, Binary, Serial)
Adjustable 0 dBm to -20 dBm Adjustable
:
Adjustable 0 dBm to -32 dBm
:
RS-232C,
TXD/RXD/RTS/CTS/GND signals
:
DC 1800V
:
AC 1500V
:
VR-2444V, Voice part module
:
4x wire speech, E&M
FXS, subscriber option
FXO, CO line connection option
:
Adjustable voice level output,
Compatible with most of old modem, like Hitachi voice and
data modem
Chapter 3 - Main Unit
Page 35 of 90
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