Model 250S1G6
Rev D
11
2.5 AMPLIFIER OPERATION
2.5.1
Local Operation
1.
Connect the input signal to the unit’s RF INPUT connector. The input signal level should be 0dBm
maximum.
2.
Connect the load to the unit’s RF OUTPUT connector.
3.
Set the REMOTE/LOCAL switch to LOCAL.
4.
Check to see that the MAIN POWER switch on the unit’s rear panel is set to the 1 (on) position.
5.
Press the POWER switch.
6.
Place the unit in the Operate mode by pressing the RF ON/OFF touch screen button.
7.
Adjust the amplifier’s gain by rotating the ADJUST knob.
NOTE: The amplifier requires 30 minutes of
warm-up time to avoid any gain or power drift.
8.
In the event of a fault, press the RESET touch screen button; if the fault does not clear, refer to section 4.3
Troubleshooting
of this manual.
2.6 REMOTE OPERATION
This section describes remote operation of this amplifier using the provided remote communication ports
connected to a device such as a personal computer. All ports are active at all times, however only one port
may be used at a time. Communicating through two or more ports at one time will cause data collisions and
lost commands or queries.
The Keylock switch on the front panel allows the amplifier to be controlled using the remote communications
ports, the front panel controls, or neither depending on its position. All remote queries will work in any
switch position. All remote commands will only work when the switch is set to REMOTE. When the switch
is set to REMOTE all front panel controls are disabled. However, faults can be reset locally by way of the
Reset button displayed on the touch screen regardless of Keylock switch position.
The
REMOTE
/
LOCAL/INHIBIT
Keylock switch on the front panel allows for the amplifier to be
controlled using the remote communications ports, the front panel controls, or neither depending on its
position. All remote queries will work in any switch position. All remote commands will only work when the
switch is set to
REMOTE
. When the switch is set to
REMOTE
all front panel controls are disabled.
NOTE: Some of the following ports may not be installed on your amplifier.
2.6.1
IEEE-488 (GPIB) Communication
For IEEE-488 operation, the device address is set using the front panel touch screen. Ensure that each device
connected to the IEEE-488 bus is set to a unique address.
Specific IEEE-488 bus commands depend on which software package you are using. To send commands be
sure that the amplifier’s address is set properly and that the controller has correctly identified the unit as a
“listening” device.
When sending commands via the GPIB interface, terminate the command with a Line Feed character, an EOI,
or both. The amplifier will ignore characters following the termination.
