Specifications
1.
Noise +28: Outputs pulsed 28V supply to drive the noise source.
2.
Noise In: Routes Noise Source energy to the test set.
3.
Line Voltage Input: Three-prong ac plug that provides input for the input-line power. The line
voltage must be between 85 and 264 Vac RMS, 43 to 63 Hz.
4.
Port 2 Bias: Provides DC input for Bias Tee on Port 2. Not available on MS462XA models.
4A.
a
1
: Reference channel 1 input. Port match: -12 dB (uncorrected). Port power: -10 dBm for 0.1 dB
compression. Must be terminated in 50 Ohms, when not used.
5.
Port 1 Bias: Provides input for Bias Tee on Port 1.
5A.
a
2
: Reference channel 2 input. Port match: -12 dB (uncorrected). Port power: -10 dBm for 0.1 dB
compression. Must be terminated in 50 Ohms, when not used
6.
Bias Fuse, Port 2: Fuse, 0.5A, 3AG, 250V, provides protection for external bias being applied to the
active device connected to test port 2 without disturbing the accuracy of the MS462XX measurement.
6A.
b
1
: Test channel 1 input. Port match: -12 dB (uncorrected). Port power: -10 dBm for 0.1 dB
compression. Must be terminated in 50 Ohms, when not used
7.
Bias Fuse, Port 1: Fuse, 0.5A, 3AG, 250V, provides protection for external bias being applied to the
active device connected to test port 1 without disturbing the accuracy of the MS462XX measurement.
7A.
b
2
: Test channel 2 input. Port match: -12 dB (uncorrected). Port power: -10 dBm for 0.1 dB
compression. Must be terminated in 50 Ohms, when not used
8.
Ext Analog In: Provides input to the A5 A/D Converter PCB. BNC connector allows an external dc
voltage to be measured by the internal analog-to-digital converter circuit. The output could be
displayed in one of the measurement channels.
9.
Ext Source: Provides input for an external frequency source to drive Port 3 on models equipped
with Option 6.
10.
Ext 10MHz In: BNC connector that allows an external 10MHz signal (–5 to +5 dBm) to be used as
the frequency reference for phase locking the source frequency.
11.
Line Fuse: 3 AG fuse cartridge that protects for an input over-current condition. The fuse is slow
blow, 8A, 250V.
12.
Ext I/O: Provide I/O access for Channel 1 through 4 limit and Port 1 and 2 bias voltages. Figure B-3
provides a pinout diagram.
REAR PANEL MS462XX REAR
CONNECTORS PANEL
MS462XX OM B-5