Boonton 4530 Peak Power Meter User Manual - Manual (Page 26)

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Chapter 3 Boonton Electronics
Operation 4530 Series RF Power Meter
EXT CAL CONTROL 14 An RJ-11 type modular telephone jack is used to connect the instrument
to a Boonton Model 2530 1GHz Programmable Calibrator. This feature
must be used to calibrate peak power sensors that cannot be calibrated at
50MHz, the operating frequency of the built-in calibrator.
CAUTION
Do not attempt to connect the External Calibrator
Control RJ-11 port to a telephone line or to any device
other than a Boonton Model 2530, 1 GHz Calibrator!
RECORDER OUT 15 A rear-panel BNC programmable analog output is available for connec-
tion to an external chart recorder or other device. The output voltage
range is unipolar or bipolar 10 volts, and a 9K output impedance allows
for simple scaling using a single external load resistor. The output can be
programmed to produce a voltage proportional to signal level, or a logic-
level status voltage for signaling when the RF power is above or below
preset “alarm limit” thresholds. Recorder output parameters can be con-
figured through the menu.
VIDEO OUT 1-2 16 Two rear-panel video BNC outputs are used to view the demodulated RF
envelope for each channel on an external oscilloscope when using peak
sensors. The output voltage is 0 to 2.5 volts, and is approximately pro-
portional to the logarithm of the sensor power. These outputs are
uncalibrated, and should not be used for making any type of external
measurement.
EXT TRIGGER 17 A rear-panel BNC input is available for connecting an external trigger
source to the power meter. The input impedance is 1 megohm to allow
triggering from a common 10x oscilloscope probe, and the input voltage
range is +5 to -5 volts to simplify triggering from logic-level signals.
RS-232 18 A rear-panel 9-pin female “D” connector is used to connect the instru-
ment to a PC or other serial device. The power meter will directly interface
with most PC serial ports using a straight-through type RS-232 cable.
RS-232 parameters can be configured through the menu.
AC Line Input 19 A multi-function power input module (lower right of rear panel) is used to
house the AC line input, main power switch, and safety fuse. The module
accepts a standard AC line cord, included with the power meter. The
power switch is used to shut off main instrument power. The safety fuse
may also be accessed once the line cord is removed. The instrument’s
power supply accepts 90 to 260VAC, so no line voltage selection switch
is necessary.
CAUTION
Replace fuse only with specified type and rating!
Table 3-1. Keyboard Controls and Connectors (Cont)
Item Figure 3-1 Function