Rohde&Schwarz_EK-895_EK-896_broch.pdf

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1、EK895/EK896 Digital VLF-HF Receivers For all shortwave applications from 10 kHz to 30 MHz Data sheet Compact DSP-based receivers for the following applications: Radiomonitoring and radio detection Radiocommunications Search operation, DF systems Frontend for HF intelligence tasks Digital signal proc

2、essing (DSP) for convenient and versatile operation Two models: EK895 half-rack receiver EK896 search receiver Realtime remote control or master-slave mode Tried and tested system concept Excellent price/performance ratio Extremely reliable operation under harsh environmental and EMC conditions EK89

3、5/EK896 Digital VLF-HF Receivers EK895/EK896 digital VLF-HF receivers Special features Excellent large-signal behavior, very good intercept points High resolution of tuning frequency down to 1 Hz Fast and low-noise synthesizer Demodulators for AM, CW, LSB, USB, ISB, FM, FSK, AFSK and FAX included in

4、 basic configuration 13 bandwidths from 150 Hz to 8 kHz (quasi-continuous on request) RF preamplifier, switchable (noise figure 8kT0) Double notch filter Noise blanker DATA LINK reception (option) Passband tuning Syllabic squelch Special RTTY (FSK/AFSK) mark and space filters, matched to the selecte

5、d shift Digital data output Maximum input voltage protection up to 100 V EMF Control interface fully complying with international standards Low power consumption 0 dB (0 dB) at 10 % spacing from the center frequency Switch on/off by remote control Input voltage protection of 00 V EMF Rear view of th

6、e EK895 EK895/EK896 Digital VLF-HF Receivers 7 The FK896D digitally tuned RF selector is recommended for use in en- vironments with strong RF interference (collocation problems). It improves input selection by automatically tracking the receive frequency and, at the same time, considerably increases

7、 input-voltage protection (overload protection). GM893 broadband IF output (option) The optional broadband output (plug-in module) supplies a 1 MHz output signal at the first IF of 1. MHz (relative to a receive frequency of 500 kHz). To pre- vent impairment of the receiver sensitiv- ity of the main

8、channel (message chan- nel), the path to the broadband chan- nel is decoupled by approx. 10 dB. For broadband spectrum analysis, a spec- trum display can be connected to this broadband output. Digital data output For further digital signal processing of the received signal, a separate digital IF int

9、erface (connector X 69 at rear) is available, delivering the digital DATA, CLOCK FRAME outputs (0 Hz to 0 kHz, sampling rate 100 ksps). DATA LINK option If DATA LINK operation (MIL-STD-188- 03-1A) is required, special receiver versions are available. 1.44 MHz IF output, unregulated (option) For conn

10、ecting and operating an exter- nal IF spectrum display, an unregulated IF output at 1. MHz is available. This option uses the HF unit (model .03) and has to be ordered along with the basic receiver. Operating concept The EK890 family has a suitable operating mode for every application (see also page

11、 8). The remote-control interface is configured to the RS-85 standard and is bus-compatible for system operation. Users who want to control their radiomonitoring system from the receiver front panel rather than from a computer can use the receivers of the EK890 family as a master re- ceiver or insta

12、ll the GB899 remote control unit. The softkey-menu operator interface provides the ergonomical advantage of clean front panel layout as well as ac- cess to a large number of setting param- eters. When you insert extension mod- ules, they are automatically detected and incorporated in the software BI

13、T and the menu system. The clearcut operat- ing concept of the EK890 family has five menu levels which allow 50 logi- cally structured operating routines to be called up by softkeys. In spite of the mul- titude of functions, operation is highly convenient, e.g. each type of modula- tion is assigned

14、a default setting with all relevant parameters, which can also be individually programmed. The table shows all possible settings down to the second menu level. For fast access to the setting param- eters, the EK896 has 1 additional hardkeys, e.g. for standard types of mod- ulation, bandwidth variati

15、on, etc. Main menu: MOD GAIN BW SCA MORE Second menu level MODDemodulation modes MORE: for further modes AM CW LSB USB MORE GAINControl modes Auto, manual, auto+manual, auto+digital MORE: fast or slow control AGC MGC A+M A+D MORE BWBandwidthBW BW SCAScan mode Frequency sweep, channel sweep (any sequ

16、ence), channel sweep (incremental), stop or continue sweep, program sweep FRQ CHP CHS S/C PRO MORE: M/S SYS SPEC CHM MEM M/SMaster-slave operation Address slave (indicate slave address, e.g. 6), read out or vary slave settings ADR 62 GET PUT SYSSystem status Read out firmware version, built-in optio

17、ns, error messages; start self-test; MORE: total reset VERS OPT CM BIT MORE SPECSpecial functions Rotary knob: step size on/off; level setting for threshold-controlled external switching sig- nal; show serial interface setting; switch to remote control; default settings on/off KNOB LEV SER REM DEF C

18、HMChannel memory parameters Channel memory indication and channel-specific parameter variation without interrupting reception MOD GAIN BW THLD MEMChannel memory operations Clear all memory, clear certain memory, store to certain memory, use next free memory CLA CLCH STCH STO 8 EK895/EK896 Digital VL

19、F-HF Receivers Control concepts of the EK895/EK896 digital VLF-HF receivers Certified Quality System ISO 9001 DQS REG. NO 1954 QM Certified Environmental System ISO 14001 DQS REG. NO 1954 UM AQAP-110 Audit report GP Q2-NO 96.07 Certified Quality System AS 9100 DQS REG. NO 1954 AS Certified Quality S

20、ystem Remote controlLocal control .via PC or ASCII terminal EK896 search receiver EK895 with front panel for remote control .via the GB899 remote control unit, model .03 Master-slave operation Slave receivers, max. 99 addressable EK895 with control panel as a standalone unit or as a master receiver

21、in systems RS-485 EK895/EK896 Digital VLF-HF Receivers 9 Specifications Frequency range10 kHz to 30 MHz Resolution1 Hz Frequency drift Frequency standard Oven-controlled frequency standard 10 C to +45 C aging/year 5 10 7 1 106 1 10 7 1 10 7 External frequency standard1/5/10 MHz, 0. V to 1 V rms Ante

22、nna inputBNC connector, 50 W VSWRtyp. 50 kHz typ. 5 MHz otherwise typ. 60 dBm, typ. 70 dBm IP330 dBm, typ. 35 dBm Crossmodulation (0.1 MHz to 30 MHz, interfering signal 5 V EMF (+1 dBm); Df 30 kHz; m = 0.3; f = 1 kHz; signal level 10 mV EMF (33 dBm) 10 % modulation transfer 10 EK895/EK896 Digital VL

23、F-HF Receivers Blocking (0.1 MHz to 30 MHz; interfering signal 6.3 V EMF (+3 dBm); Df 30 kHz; signal level 1 mV EMF (53 dBm); m = 0.3; f = 1 kHz) 1 dB signal attenuation Desensitization (interfering signal 300 mV EMF; Df 30 kHz; signal level 30 V EMF; bandwidth 3.1 kHz) 0 dB SINAD Inherent spurious

24、signals (f 100 kHz)90 dB IF rejection90 dB Weighted S/N ratio for 1 mV EMF6 dB SINAD Gain controlautomatic (AGC), manual (MGC) or remote (DGC) AGC errortyp. 3 dB (1 V to 1 V EMF) Time response constants Attack time15 ms Decay time5/150/500 ms, 1 s, 3 s DGC range0 dBV to 10 dBV EMF in 1 dB steps BFO5

25、.00 kHz to +5.00 kHz Resolution10 Hz AFSK/FSK demodulatortransfer rate (50 baud to 600 baud) and deviation range (.5 Hz to 5 Hz) adjustable; V.8 interface and audible tone circuit Diplex telegraphy demodulator (F7B) V.8 interface Channel memoryfor 1000 channels, nonvolatile, storage of complete rece

26、iver setup for each channel Data interfaceRS-3-C, RS-85 (bus-compatible) Transfer rate50 baud to 38 00 baud Outputs AF output 1, AF (I)0.3 kHz to 3. kHz; floating; Zout = 600 W Settling range10 dBm to +10 dBm AF (Q)80 mV rms, Zout 100 W FAX1 (F1C)1.9 kHz 150 Hz in VLF range (f 500 kHz) 1.9 kHz 00 Hz

27、 in HF range (f 500 kHz) FAX (F3C)1.9 kHz modulated FM (F3E)NBFM (3 dB bandwidth: kHz) AF output (LSB in ISB mode)0.3 kHz to 3. kHz, floating, Zout = 600 W Settling range10 dBm to +10 dBm Monitoring output500 mV, Zout = 33 W FM video output1 V/kHz, Zout = 1 kW IF (1. MHz) output (unregulated) Bandwi

28、dth (3 dB) Gain 10 kHz (18 ) dB, 50 W IF output (analog)0 Hz to 0 kHz in 100 Hz steps, 0 dBm into 600 W or 55 kHz, 0 dBm into 50 W (optional) IF output (digital)serial data (clock, data, frame), 100 ksps I/Q output (digital)baseband signal, multiplexed, 5 V CMOS Options GB890 control panel (model .0

29、3)with controls and indicators for complete receiver setup; connector for loudspeaker or headphones (max. 1 W into 8 W) GB899 remote control unit (model .03, on request)GB890 control panel plus EK895 reduced to control functions, using RS-3-C with a transfer rate of 50 baud to 1900 baud; modem opera

30、tion recommended for distances beyond approx. 100 m FK890H1 input filter unitlowpass filter 0 Hz to 0.5 MHz bandpass filter 0.5 MHz to 1.5 MHz 8 suboctave filters 1.5 MHz to 30 MHz GC890 BCD interfacefrequency information, bit parallel (CMOS, 5 V) More information at www.rohde- (search term: EK895,

31、EK896) EK895/EK896 Digital VLF-HF Receivers 11 GH890 TTY line current sourcesingle current: 0 mA/60 V double current: 0 mA/30 V UX895 IF converter (on request)55 kHz, 0 dBm into 50 W, BNC female FK96D digitally tuned RF selector (EK896 only) Frequency range0 Hz to 30 MHz, at f 0 dB: FK896D, model .0

32、) at 10 % spacing from center frequency (f = 1.5 MHz to 30 MHz) Gain0 to + dB Tuning time 10 V EMF or A GM893 broadband IF output (model .03) Output frequency1. MHz (unlevelled) 3 dB bandwidth1 MHz Attenuation1 000 h Power supply100/10/30/0 V 15/+10 %, 7 Hz to 0 Hz (approx. 5 VA to 75 VA, depending

33、on model) Dimensions (W H D), weight EK89511 mm 13 mm 60 mm (8.31 in 5.0 in 18.11 in), approx. 8 kg (approx. 17.6 lb) EK8966 mm 13 mm 60 mm (16.77 in 5.0 in 18.11 in), approx. 11 kg (approx. .5 lb) 1 ) ETSI EN 300373-1/3, operating temperature range (10 C to +5 C) ETSI EN 300373-1,7.6. is a register

34、ed trademark of Rohde for local and remote control6057.8996.1 With control panel; for local and remote control; with built-in OCXO6057.8996.1 With control panel; for local and remote control; with built-in OCXO; LINK11 reception 6057.8996.17 With control panel; for local and remote control; LINK11 r

35、eception; for use with external frequency standard 6057.8996.37 With control panel; for local and remote control; with 1. MHz IF output6057.8996.63 Digital VLF-HF Search Receiver EK896 Control panel with loudspeaker; for local and remote control6038.509.1 Control panel with loudspeaker; for local an

36、d remote control; with built-in OCXO 6038.509.1 With control panel; for local and remote control; with built-in OCXO; LINK11 reception 6038.509.17 With control panel; for local and remote control; LINK11 reception; for use with external frequency standard 6038.509.37 Plug-in modules (EK895, EK896) P

37、reselection UnitFK890H16007.7750.0 Digitally Tuned RF Selector Stopband attenuation 0 dB; for EK896 only FK896D6077.3019.0 Digitally Tuned RF Selector Stopband attenuation 0 dB; for EK896 only FK896D6077.3019.0 BCD InterfaceGC8906007.7809.0 Broadband IF OutputGM8936051.89.03 Recommended extras (EK89

38、5, EK896) Transfer Software PackageEK890S36015.9.0 Quasi-Continuous IF Bandwidth ControlEK895S76077.0510.0 Loudspeaker UnitGA890L1601.6199.0 Remote Control UnitGB8996037.3501.03 TTY Line Current SourceGH8906007.605.0 Service KitKA890C16030.900.0 19“ Assembling Kit for two EK895 Desktop model For rack installation KA890L1 601.6699.0 601.6699.03 High-Precision Oven-Controlled Master Quartz Oscillator6007.355.03 IF Conversion to 55 kHzUX8956077.061.0 19“ Adapter Kit For EK896 ZZA-930396.89.00 19“ Adapter Kit For one EK895 and one blank panel ZZA-98 087.533.00