Rohde & Schwarz EK 895 User manual
Radio Communications Systems
Division
Operator Manual
VLF > HF RECEIVERS
EK 895 EK 896
6057.8996.07 6038.2509. 7
Software Version 3.xx Software Version 3.xx
6075.6991.82.01 > 1
”
Copying of this document as well as any other utilization and communication of its content are only
admissible with the permission of the originator or other authorized persons.
Any disregard will be prosecuted and is subject to restitution (UrhG, UWG, BGB). For the case a patent is
issued or the design is officially registered all rights are reserved.
ROHDE & SCHWARZ GmbH & Co. KG
∑
D>81671 MÂnchen
∑
MÂhldorfstr. 15
∑
Tel. (089) 4129>0 Int. +4989 4129>0
Telefax (089) 4129>2164 Int. +49894129>2164
Printed in the Federal Republic of Germany
∑
Subject to change
∑
Data without tolerances : order of magnitude only
0796
6075.6991.82.01 >2
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
Page No. Change index /
date of issue Page No. Change index /
date of issue
1 / 2
G.1 / G.2
V.1 to V.2
B.1 / B.2
Z.1 / Z.2
3 / 4
01.1 to 01.2
01.3 / 01.4
1.1 to 1.38
1.39 / 1.40
1.41 / 1.42
1.43 / 1.44
1.45 / 1.46
1.47 / 1.48
1.49 / 1.50
1.51 / 1.52
02.1 / 02.2
2.1 to 2.10
2.11 / 2.12
01 07 / 96
01 07 / 96
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01 07 / 96
LIST OF EFFECTIVE PAGES
First Edition and Revisions
First edition......01...... March 1996
6075.6991.82.01
>G.1 / G.2 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
List of Abbreviations
A= address
A+D = automatic and digital gain control
A+M = automatic and manual gain control
ACT (actual) = BYPASS signal depends on
scanning status
ADR = address
AF = audio frequency
AFSK = audio frequency shift keying, F1B
AGC = automatic gain control
AM = amplitude modulation, A3E
ASCII = American Standard Code for
Information Interchange
B8D = amplitude modulation (LL, LU, LIL, LIU)
BCD = binary coded decimal
BFO = beat>frequency oscillator
BI = BIT status
BIT = built>in test
BW = bandwidth
BYP (bypass) = switching digital selection on
or off
C= CM status
CH = channel
CHM = channel manipulation
CHP = channel program (channel scanning
with freely programmable channel list
CHS = channel sequence (channel scanning
with rising channel sequence)
CL = clear (clearing, disabling a channel)
CLa = clear all (clearing all channels)
CLCH = clear channel (clearing a particular
channel)
CLR = clear
CM = continuous monitoring
CONT = continuous
CONV = converter
CR = carriage return (ASCII character)
CTRL = control
CW = continuous wave (Morse telegraphy,
A1A)
DEF = default value
DEZ = decimal
DGC = digital gain control
DIG = digital
ENT = enter (completing the entry of
numerals)
ERR = error status
F= frequency
F7B = diplex telegraphy
FAX = facsimile, F1C and F3C
FIB = filter bandwiths (IF)
FM = frequency modulation, F3E
FREQ = frequency
FRQ = frequency
FSK = frequency shift keying, F1B
HF = high frequency
I= modulation mode
IF = intermediate frequency
ILSB = ISB LSB, independent sideband (two
independent sidebands, monitoring on lower
sideband, B8E
IND = indicator (switchover level / tuning
indication)
INTF = interface
ISB = independent sideband (two
independent sidebands)
IUSB = ISB USB, independent sideband (two
independent sidebands, monitoring on upper
sideband, B8E
K= channel manipulations
Ks = activating a channel
L = receive level
L ISB LSB = LSB and USB signal, monitoring on
lower sideband, B8D
L ISB USB = LSB and USB signal, monitoring on
upper sideband, B8D
L LSB = LSB signal, monitoring on lower
sideband, B8D
L USB = USB signal, monitoring on upper
sideband, B8D
LCD = liquid>crystal display
LED = light>emitting diode
LEV = level line
LF = line feed (ASCII character)
LIL = data link ISB LSB (LSB and USB signal,
monitoring on lower sideband, B8D)
LIU = data link ISB USB (LSB and USB signal,
monitoring on upper sideband, B8D)
LL = data link LSB (LSB signal, monitoring on
lower sideband, B8D)
LSB = lower sideband
LOC = local (receiver is locally controlled)
LU = data link USB (USB signal, monitoring on
upper sideband, B8D)
M = mode (operating status)
M / S = master / slave operation
ME+ = memory (storage into buffer)
6075.6991.82.01
>V.1 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
ME>= memory (activating the buffer contents)
MEM = memory manipulation
MGC = manual gain control
MCU = microcontroller unit
MOD = modulation
NB = noise blanker
NF = notch filter
NTCH = notch filter
OP = option
OPT = option
P= level line status
PA = preamplifier
PAMP = preamplifier
PBT = passband tuning
PC = Personal Computer
PL = level line
PREAMP = preamplifier
PRO = programming (of scanning)
PROC = processor
RAM = random access memory
REM = remote (receiver is remotely controlled)
RF = radio frequency
RS = reactivating a channel
SA = signal BYPASS
SCA = scanning commands
SE = switching digital selection on or off
SER = serial interface
SHFT = shift (frequency offset)
SIG = signal BYPASS
SPEC = special functions
SQ = syllable squelch
ST = store
STCH = store channel (storing current
operation settings in a particular channel)
STO = store (storing current operation
settings in the next free channel with the
lowest channel number)
SYNTH = synthesizer
SYS = system functions
THLD = threshold (digital threshold)
TTY = teletype
USB = upper sideband
V= version (software version)
VAR = variable stepwidth
VERS = version (software version)
VLF = very low frequency
EF= frequency offset
6075.6991.82.01
>V.2 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
User Information
Purpose of the Manual
This Manual provides all information the operator needs for data link operation with VLF>HF Re>
ceivers EK 895 and EK 896.
All functions and commands marked with a crossreference to the User Manual 6045.6712.12.xx are
possible in data link operation; however, they are not essential for the actual data link operation.
Not included in this Manual are the necessary information and instructions concerning the instal>
lation, putting into operation and control of the unit, and troubleshooting instructions down to
module level. For this the User Manual 6045.6712.12.xx is required which is supplied as an acces>
sory.
6075.6991.82.01
>Z.1 / Z.2 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
Definitions
BIT In the BIT (built>in test) it is checked whether all modules of
the basic unit are installed and operative. If required, error
messages are output which may also inform on the operating
status of the installed options. In addition, the Tx and Rx paths
are checked. The BIT is initiated either through switch>on or on
purpose during operation by pressing softkey BIT in the MAIN
menu.
CM In CM (continuous monitoring) all important equipment
functions are permanently monitored. This check is automatic.
Error messages are output following which the operator can
initiate the BIT to localize the fault.
6075.6991.82.01
>B.1 / B.2 >
Operator Manual
VLF >HF RECEIVERS
EK 895 EK 896
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Operation
Control Unit 'LOCAL' (EK 895) = Option 'Control Unit GB 890' or
Control Unit (EK 896), Control Unit 'REMOTE' (EK 895),
Control and Display Elements
Remote Control
Operating Modes, Basic Settings, Special Functions, System Functions,
List of Commands
6075.6991.82.01 >3 / 4
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
List of Contents
1. Operation
Page
1.1 Control Unit 2 ∫LOCAL∫ (EK 895, = Option
'Control Unit GB 890') or Control Unit (EK 896) . . . . . 1.1
1.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1
1.1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.1.3 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
1.1.3.1 MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
1.1.3.2 CHANNEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5
1.1.4 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5
1.1.5 Switching On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7
1.1.6 Switching Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.7
1.1.7 Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8
1.1.7.1 Entering a Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8
1.1.7.2 Altering the Frequency with the Tuning Knob . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8
1.1.7.3 Altering the Tuning Knob Stepwidth with the Cursor Control Keys . . . . . . . 1.8
1.1.7.4 Entering the Tuning Knob Stepwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.10
1.1.7.5 Enabling the Tuning Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.10
1.1.7.6 Disabling the Tuning Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.10
1.1.8 Modulation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.12
1.1.9 Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.14
1.1.9.1 Calling Up a Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.14
1.1.9.2 Channel Scanning by Using the Tuning Knob . . . . . . . . . . . . . . . . . . . . . . . . . . 1.14
1.1.10 Separate Functions 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.16
1.1.10.1 Switching the Preamplifier On or Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.16
6075.6991.82.01
>01.1 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
Page
1.1.11 Separate Functions 2 (EK 896) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.17
1.11.1.1 Storage into the Buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.17
1.11.1.2 Calling Up the Buffer Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.17
1.11.1.3 Activating the Digital Selection FK 896 (Option) . . . . . . . . . . . . . . . . . . . . . . . 1.17
1.11.1.4 Deactivating the Digital Selection FK 896 (Option) . . . . . . . . . . . . . . . . . . . . . 1.17
1.1.12 Loudspeaker (EK 896) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.18
1.1.12.1 Switching the Loudspeaker On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.18
1.1.12.2 Adjusting the Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.18
1.1.12.3 Switching the Loudspeaker Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.18
1.2 Control Unit 1 ∫REMOTE∫ (EK 895) . . . . . . . . . . . . . . . 1.19
1.2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.19
1.2.2 Switching On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.19
1.2.3 Switching Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.20
1.3 Control and Display Elements of Control Unit 2
∫LOCAL∫(EK 895, = Option 'Control Unit GB 890')
or Control Unit (EK 896) . . . . . . . . . . . . . . . . . . . . . . . . . 1.21
1.4 Control and Display Elements of Control Unit 1
∫REMOTE∫(EK 895) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.37
6075.6991.82.01
>01.2 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
List of Figures
Fig. Title Page
1.1 Control and Display Elements of VLF>HF Receiver EK 896 . . . 1.39
1.2 Control and Display Elements of VLF>HF Receiver EK 895 . . . 1.41
1.3 Control and Display Elements of VLF>HF Receiver EK 895
(Control Unit 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.43
1.4 Structure of Software for VLF>HF Receiver EK 895 . . . . . . . . . 1.45
1.5 Structure of Software for VLF>HF Receiver EK 896 . . . . . . . . . 1.49
6075.6991.82.01
>01.3 / 01.4 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
f
General
1. Operation
1.1 Control Unit 2 ∫LOCAL∫ (EK 895, = Option 'Control Unit
GB 890') or Control Unit (EK 896)
(see Fig. 1.1 for EK 896 or Fig. 1.2 for EK 895)
1.1.1 General
Note:
In the text which follows only data link>
relevant functions are described. All other
functions are dealt with in the User Manual
(6045.6712.12.xx).
Local control is carried out via
fKeys with a fix function (hardkeys),
fMulti>functional keys (softkeys),
fSwitches,
fControls and a
fTuning knob.
All essential receiver settings can be entered di>
rectly:
fFrequency
fChannel
fModulation mode
The technical data stated in the data sheet are
guaranteed for frequencies as of 10 kHz.
For entries via the numeric keypad the follow>
ing should be observed:
fEntries can be corrected at any time by ac>
tuation of key CLR.
fEntry of leading zeros is not required (0.04
= .04).
fEntry of zeros following the decimal point
is not required (1 = 1.000).
fComplete entries are to be terminated by
actuating key ENT or softkey ENT or NEXT.
fEntries outside the permitted entry range
will not be accepted.
fIf within approx. 2 s no entry is made for
frequency or channel, the initial indication
will be displayed again.
For EK 895 only:
The softkeys obtain their different functions
either by selection from the menu (software)
or via previous actuation of the ENT key (separ>
ate functions menu 1).
The LEDs assigned to keys FRQ and CH indicate
which function the tuning knob and the nu>
meric keypad currently have an effect upon. If
the LED assigned to key FRQ is illuminated, the
stepwidth of the tuning knob can be altered by
means of the cursor control keys (Æ and ¨).
Once the maximum or minimum value is
reached, turning the tuning knob further will
have no effect on the indication (this does not
apply to the channel number!).
For EK 896 only:
The softkeys obtain their different functions
either by selection from the menu (software)
or via key MENU 1 (separate functions menu 2).
The LEDs assigned to keys FRQ and CH indicate
which function the tuning knob and the nu>
meric keypad currently have an effect upon.
6075.6991.82.01
>1.1 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
f
General
If the LED assigned to key FRQ is illuminated,
the stepwidth of the tuning knob can be al>
tered by means of the cursor control keys (Æ
and ¨).
Once the minimum or maximum value is
reached, turning the tuning knob further will
have no effect on the frequency indication.
The key MORE only obtains a function if on the
right>hand side on the display the character
'>' appears.
Note:
The individual functions are called up via the
main menu.
A description of how the operator gets from
the individual sublevels back to the main menu
is not provided. Unrestricted control of the re>
ceiver is still possible with a particular function
being called up. If required, the main menu can
be called up again by pressing the key MENU
several times.
6075.6991.82.01
>1.2 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
f
Display
1.1.2 Display
In all operating modes the following receiver
settings are continuously displayed:
fReceive level indicated by the bargraph
with a resolution of 5 dBoV,
fFrequency with a resolution of 1 Hz
fBandwidth: 3.1 kHz only
fChannel
fStatus for preamplifier (PREAMP)
Except for entries, e.g. of a frequency, the fol>
lowing receiver settings are additionally in>
dicated:
fModulation mode
fControl time: FAST only
fCurrent softkey assignment (menu line)
a
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90
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120
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RF
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dBoV
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CHANNEL
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BW
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FREQUENCY
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kHz
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GAIN
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MODULATION
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FAST
Channel FrequencyBandwidth
Current Softkey Assignment
(Menu Line)
Control TimeModulation
Mode
Bargraph
PREAMP NB SQ NOTCH PBT
Status Line
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kHz
6075.6991.82.01
>1.3 >
V L F >H F R E C E I V E R S
f
E K 8 9 5 / E K 8 9 6
Operator Manual
f
Operating Modes
1.1.3 Operating Modes
The receiver can be operated in the following
two operating modes:
fMANUAL
fCHANNEL
>FIXED CHANNEL
1.1.3.1 MANUAL
In the operating mode MANUAL no channel is
set. In manual operation the following mani>
pulations are possible:
fEntry or modification of frequency
fSelection of modulation mode
fSelection of special function
fSelection of system function
fSelection of separate function
fStorage into a channel
fClearing a channel
In the MANUAL mode the different software
levels may be called up without affecting the
receive operation.
For all manipulations with the exception of sys>
tem reset, store and clear, the stored channel
contents remain unchanged.
Complete receiver settings, consisting of fre>
quency and modulation mode, can be stored in
a single channel.
1.1.3.2 CHANNEL
In the operating mode CHANNEL there is a
channel set. In channel operation, the follow>
ing manipulations are possible:
fChannel call>up and scanning
fEditing the channel data
As soon as one of the basic settings (frequency
or modulation mode) is altered, the receiver is
automatically in the operating mode MANUAL
(see 1.1.3.1). That is, no channel will be indi>
cated.
Cleared (inhibited) channels cannot be called
up.
Only those channels are permitted to be called
up where one of the following modulation
modes is stored:
LL LU LIL LIU
1.1.3.2.1 FIXED CHANNEL
In the operating mode FIXED CHANNEL it is
possible to call up only those channels which
were previously stored. All other operating
functions are blocked. However, this does not
apply to remote operation.
The operating mode FIXED CHANNEL can only
be activated and deactivated by entering a
password.
6075.6991.82.01
>1.4 >
This manual suits for next models
1
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