Signaling System Diagram and Signal Forms | Toshiba GD-1220 specification

3.2Signaling System Diagram and Signal Forms

3.2.1Circuit control signals

The following circuit control signals are used in the binary and tonal procedures.

•Circuit control signals

CED	Called station identification
	Indicates that the sender is a FAX machine in the automatic called
	mode. (*1)

CNG	Calling tone
	Indicates that the sender is a FAX machine in the automatic calling
	mode. (*1)

*1: This signal can be sent manually.

• Signal form

Signal name		Signal form							Signal form

CED									f: 2100 ±15 Hz
				f					t: 2.6 - 4.0 sec

				t

CNG									f: 1100 ±38 Hz
		f					f		t: 0.5 sec ±15%
									(L: 3 sec)
				L					(L: 3 sec)
		t					t

3

© 2006 - 2008 TOSHIBA TEC CORPORATION All rights reserved	GD-1220/1221
	DIALING/COMMUNICATION CONTROL

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Toshiba GD-1220, GD-1221 Signaling System Diagram and Signal Forms, Circuit control signals, Signal name Signal form

Contents

GD-1220/1221 Page Transportation/Installation Vorsicht Important Service Parts for Safety Contents 2006 2008 Toshiba TEC Corporation All rights reserved GD-1220 GD-1221 Remarks FAX OptionsSTUDIO165/205 Available STUDIO167/207/237 System firmware version Specifications Transmission system DBm to -8 dBm The setting can be changed by 1 dBEmbedded DBm to 0 dBm Level -55 dBm or lower cannot be detected Folio Dimension width x length Printing areaComp Features Specifications and Outline of System 08/08 Following accessories and parts come with the FAX unit Accessories and PartsAccessory Qty Options Extends the FAX functions when the FAX unit is installedOption Function Model NA/EU/AU/TW System ListADF Radf Units and Components Layout of PC Boards Symbol Name FunctionFAX PWA-F-NCU-631 Recording paper size LSU-RELATED Functions Size Horizontal x Vertical Effective recording area Effective recording area Inch Feed direction Mm 0.16 inch Effective recording area For MJD, AUD, ASD, SAD, TWD, and CND models Unit mm inchSize Horizontal x Vertical Effective recording range 297 x 293 x A4-R 210 x 206 x A5-R 148 x 144 x 257 x 253 x Print mode Recording paper selection algorithm Recording paper selection algorithm and print algorithmPrint algorithm Judgment parameter Reception print flowchart Start Receive FAX Bit Discard parameter Discard printing Vertical reduction print Similar reduction print RTI Scanning For MJD, AUD, ASD, SAD, TWD, CND modelsST-R Comp Scanning width Recording paper range For MJD, AUD, ASD, SAD, TWD, and CND modelsRecording paper range A4-R Comp *2 Comp *1 Recording paper range LT long Comp long LD longRecording paper range A4 long B4 long A3 long Folio Folio *1 Error processing Order Drawer Limitations on reception print LSU-RELATED Functions Dial call-up transmission to a telephone circuit Circuit Connection and Procedure to Change ModeYES Standby state Procedure to select the transmission mode Selection of the communication modeCommunication mode Toshiba original procedure Telephone circuit Circuit control signals Signaling System Diagram and Signal FormsThis signal can be sent manually Signal form Signal name Signal form Image signal Communication with the binary signalsMode change is possible only for the original set manually Receiver Frames received Error occurred Only error frame retransmitted 1 completed 2 completed CFR CED NsfcsidisMCF Binary signals PIN PIPPRI-EOM PRI-MPS FCF FIF FCS When this frame is the last frame, X =Format Binary signal Format FCF format of each binary signal 4800 bps, 2400 bps 9600 bps, 7200 bpsTCF 3 V.8/V.34 communication sequence Line closed Standard procedure Transmitter Receiver Signal name Abbreviation Function Remarks Hz and 3,750 Hz in units Tone signal between150 Hz Frequency transmission Capability ALT TRN Receives an NSF sent from Maintains the synchroniza 7E H TionTransmitter Receiver Scrambled data frame to be Image data Image data are sent. TransmitterIs completed Encoded image data Turn off Scrambled 1 is sent for PPS-EOP Short training SignalTransmission of one Is completed Informs to disconnect the line Line closed DIS cannot be recognized DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control DIALING/COMMUNICATION Control TEL mode FAX Automatic SwitchingFAX mode General functions DIALING/COMMUNICATION Control GD-1220/1221 Configuration Description of Circuits Configuration EU/AU/AS/C models Signal Name Type Active Description Destination Line path switching control circuitCML1 ATT3DB1 IC3 RLY3, IC3IC5 Dial pulse generation circuit Line 1 Dial Pulse Generation Signal Q53 Line 1 Dial Pulse Generation Signal Line Reverse Current Detection Signal IC23 Line Current Detection Signal IC23Line current detection circuit REVA1 Current Reverse Line 1 Current Detection IC23 Signal Line 1 Current Detection Signal IC23 CI detection circuit Line 1 CI Detect Signal IC23 Line 1 CI Detection Signal IC23 FAX board Line monitor circuit Ringer/Alarm Monitoring signalLine Monitor LOW High Sound volume PWA-F-FAX-635 GD-1220 PC Boards PWA-F-FAX-678 GD-1221 PWA-F-NCU-631 NAD, TWD, SAD PWA-F-NCU-631 MJD, AUD, ASD, CND Electrical Circuits Explanation to the Users Installation Installation