Connections
Front Panel Connections
RF OUT
This is the 50
Ω
generator output. The maximum output is 500mVrms (+7dBm) into 50
Ω
. It can
tolerate a short circuit indefinitely.
The Type N connector is a precision component that should be protected from excessive wear to
ensure that its RF characteristics (impedance and VSWR) are accurately maintained. If the
instrument is used in a manner that demands many connections/disconnections to and from the
RF OUT it is good practice to fit a male–to–female adaptor to the socket which can be replaced
periodically.
Do not apply an external voltage to this output. Protected against accidental connection of up to
50VDC and reverse power of up to 25 Watts from 50
Ω
.
MODULATION IN/OUT
This is the external modulation input and internal modulation output. Input frequency range is
50Hz to 300kHz (depending on modulation type) and impedance is nominally 600
Ω
as input or
output.
Do not apply external voltages exceeding ± 10V peak to this input/output.
Rear Panel Connections
EXTERNAL REFERENCE IN/OUT
Can be set to be the External Reference In (10MHz, 2V to 5Vpp, 50
Ω
), Internal Reference Out
(10MHz, 4Vpp from 50
Ω
) or Off.
Do not apply external voltages exceeding ± 10Vpp to this input/output.
RS232
9-pin D-connector compatible with addressable RS232 use. The pin connections are shown
below:
Pin Name Description
1
-
No internal Connection
2
TXD
Transmitted data from instrument
3
RXD
Received data to instrument
4
-
No internal connection
5 GND
Signal
ground
6
-
No internal connection
7
RXD2
Secondary received data (addressable RS232 only)
8
TXD2
Secondary transmitted data (addressable RS232 only)
9
GND
Signal ground (addressable RS232 only)
Pins 2, 3 and 5 may be used as a conventional RS232 interface with XON/XOFF handshaking.
Pins 7,8 and 9 are additionally used when the instrument is used in addressable RS232 mode.
Signal grounds are connected to instrument ground. The RS232 address is set from the front
panel using the COMMS menu.
GPIB (IEEE-488)
The GPIB interface is not isolated; the GPIB signal grounds are connected to the instrument
ground. The implemented subsets are:
SH1 AH1 T6 TE0 L4 LE0 SR1 RL1 PP1 DC1 DT0 C0 E2
The GPIB address is set from the front panel using the C0MMS menu.
10
