Rohde & Schwarz 890 Series - Control Unit (R&S EK 896); IF; AF Processor; Operating Functions Set Ex Works; Power Supply

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
User Manual f Operating Functions
2.3 Operations Functions Set Ex Works
2.3.1 Power Supply
The power supply is set ex works to an
operating voltage of
f 220 VAC.
For this operating voltage a fuse, type T630/
250 V is required.
The AF output level is set to
f 0 dBm.
Appendix 1 provides information on how the
operating voltage and the level can be altered.
2.3.2 Control Unit (R &S EK 896)
The direction of rotation of the HF control in
the control unit is set ex works so that by turn>
ing the control
f clockwise
the gain increases.
Appendix 1 provides information on how the
direction of rotation can be altered.
2.3.3 Processor
The RS232C>RS485 interface parameters in the
processor are set ex works as follows:
f unaddressed operation
f 2400 Bd, one stop bit
f RS232, odd parity, CTS / RTS handshake
Appendix 1 provides information on how one
or several interface parameters can be altered.
2.3.4 Synthesizer
The synthesizer is set ex works to
f internal synchronization
f division ratio 10:1
Appendix 1 provides information on how the
synthesizer can be externally synchronized and
which division ratio is to be set.
2.3.5 IF / AF Processor
Ex works the AF output level is set to
f 0 dBm
Appendix 1 provides information on how to
alter the AF output level.
The variable resistor FM Video permits the
adjustment of the DC offset (e 10!mV) for the
signal FM>Video.
2.3.6 TTY Line Current Source
R&S GH 890 (Option)
The optional TTY Line Current Source
R&S GH 890 is set ex works to
f single current.
Appendix 1 provides information on how the
line current source can be set to double
current.
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