Model SR Serial Recorder Specifications

Serial Port	RS232, DB9 9 PIN FEMALE
Baud Rates	Baud: 1200, 4800, 9600, 19.2K, 57.6K, and also 115.2K non-dense data Parity: Odd or Even with 7 Bits Data, or None with 8 Bits Data. ........RECORD and PLAYBACK have separate Baud rate settings.
Port Configuration	DTE: Will plug onto Windows PC DB9 Connector without null modem.
Recorder Capacity	256 Mega Bytes, (256,000,000), Continuous Stream: 74 hours at 9600 Baud
Memory	Non-Volatile. Retains data for many years without power.
Flow Control	Input: Requires No Flow Control Handshaking, Model SR256 does not go busy while recording. Exception: 115.2K Baud Setting is not guaranteed. Output: will respond to flow control if sensed. Model SR256 will stop playing back data if it's DB9 Pin7 input is set to -V (-3Volt to -12Volt level).
Operator Control	1 six position rotary knob. Provides user indication of operating mode.
Power	6 - 9 Volt DC Wallmount Adapter, or 9 Volt Battery (limited use 7 - 14 hours). Current Consumption: Average typical <10ma during RECORD. Minimum Input Voltage: 4.5 Volts Maximum Input Voltage: 15 Volts
Power Switch	Rotary Switch position physically disconnects all power sources.
Setting Up Baud Rate	Adjust front panel switch setting to SETUP. A dialog begins with a terminal. Set separate Record and Playback Baud Rates, use a terminal or Windows HyperTerminal. No software is required. Setup always runs at 9600, 8 N, 1
To Record	• Move rotary switch from PLAY to RECORD. • Previous recording is automatically erased. • Recording starts immediately. • All data on Model SR256 DB9-Pin3 input is recorded. No other signals are required. • Recording starts at the beginning of 256MB memory. • Move rotary switch to PAUSE for temporary ignoring received data, or to append data at another location. • A Nul Modem connector may be required to place data signal on Pin 3. • Leave Model SR256 to record as long as you wish, up to 256 megabyte limit, as long as it has power.
To Playback	• Move rotary switch to PLAYposition. This ends the recording mission. • The saved data is immediately output on Model SR256 Pin 2. • You may plug Model SR256 onto a PC COMM Port, and use your application to receive the data. (eg. Windows HyperTerminal). • You may also connect Model SR256 to a printer, if the data you recorded is printer data. • Move rotary switch to PAUSE to temporary halt data output. • You can use SETUP to set playback at a higher baud rate to speed up transfer. • Play back the data as many times as you require. • Memory will retain for many years without power.
LED Indicators	• RX Recording LED: Illuminates with data bytes being received. • TX Playback LED Illuminates with data bytes being output. • Record Failure LED: Helps user assure recording.
Options	• T-TAP device, taps into existing systems without interferring with operation. • External Battery Power Cord with alligator clips, for 6 Volt lantern batteries, extends operation to 30-60 days.
Enclosure	ABS Plastic, Overall: 5.9"x2.7"x2"
IP Rating: Enclosure	IP20
Front Panel Control	This is the only control used on Model SR. No other control is necessary. Control is quick and clear. The use of a control knob gives positive identification of the mode when the unit is visited. To Record a new mission: Move knob from PLAY to RECORD. (records at beginning of 256mb memory) • Data records without any need for flow control.
DB9 Connector	Standard RS232 Pin Configuration simply requires just two pin connections, (Pin5 & Pin3) to record data. • This also interfaces to a PC DB9M COMM PORT which can be used for testing, setting up, recording or playing back data, ( just connect an extension cable).
Alternate PC Connection	Use USB adapter cable.
Option Power Cable	Longer Operation With External Battery
Option T-Tap	T-Tap Non-Interferring tap into working systems.
Option Special Baud Rates	Alternate baud rates may be specified at time of order.