22130635 REV. 000 November 2020
Copyright © VIAVI Solutions 2020
CX300 ComXpert Quick Start Guide
This guide contains basic operating and safety information for the CX300
ComXpert Communications Service Monitor. Refer to the CX300 ComXpert
Operation Manual on the test set for detailed information about the device’s
functions and capabilities and for complete product safety information.
DECLARATION OF CONFORMITY
VIAVI recommends keeping a copy of the Declaration of Conformity that
shipped with the unit with the device at all times.
WARRANTY INFORMATION
Warranty information for this product is available on the VIAVI website at
https://www.viavisolutions.com/en-us/warranty-information.
SAFETY INFORMATION
Refer to the CX300 ComXpert Operation Manual for complete product safety
information.
SAFETY SPECIFICATIONS
Refer to the CX300 ComXpert Operation Manual for complete product
specifications.
CONTROL AND OPERATION
The CX300 User Interface (UI) can be operated locally using the touch-based
display or a USB mouse and keyboard. The CX300 can also be controlled remotely
using a VNC viewing application.
TECHNICAL ASSISTANCE
Contact the Technical Assistance Center (TAC) for technical support or with any
questions regarding this or other VIAVI products.
– Phone: 1-844-GO-VIAVI
For the latest TAC information, go to:
http://www.viavisolutions.com/en/services-and-support/support/technical-assistan
ce
CAUTION
• Only use the AC Adapter/Charger provided with the product to
charge the battery.
• Do not use the AC Adapter/Charger outdoors or in a wet or
damp location.
• Only connect the AC Adapter/Charger to the correct mains
voltage indicated on the ratings label.
• Do not overload input connectors. Refer to product
specifications, or product labeling for maximum input ratings.
Table 1 Power Ratings
Parameter Specification
Power Input VAC, 50/60 Hz, Switch Selectable
Input Current 5 A @ 115 VAC, 3 A @ 230 VAC
AC/DC Power Adapter
Input 100-240V, ~50-60 Hz, 2.2A max
Output 19-27 V, 15A Max
Battery 14.4 V, 6.7 A-h, 96 Wh, Lithium Ion
Table 2 Maximum Input Ratings
Connector Specification
RF Duplex +45 dBm (50 W continuous, < 35°C ambient)
+51 dBm (125 W, 30 seconds on, 90 seconds off or
until temperature alarm)
RF Input +27 dBm (preamp off, > 1 MHz)
+13 dBm (preamp on or <1 MHz), ±50 Vdc
Audio Input 1 200 Vpk max, CAT 1
Audio Input 2 200 Vpk max, CAT 1
Trigger Input Minimum logic high >
2.4
maximum logic high < 3.3 V
REF Input -10 dBm to +10 dBm
CX300 CONTROLS AND CONNECTORS
Figure 1 CX300 I/O Connectors
# Connector Description
1 AF INPUT 1 HIGH High power audio input connector.
2 AF INPUT 2 LOW Low power audio input connector.
3 AF OUTPUT Audio output for the AF Generators.
4 MIC/ACC Microphone and accessory connector.
5 RF DUPLEX Provides low level output and high level
input detection.
6 RF INPUT / PORT 2 RF Input connector.
7 RF OUTPUT / PORT 1 RF Output connector.
8 Trigger INPUT Connector for synchronizing signals from
an external timing reference.
9 Trigger OUTPUT Connector allows the CX300 internal
timing reference to be used as trigger
source.
10 REF OUTPUT Output port for 10 MHz reference signal.
11 REF INPUT External frequency reference input
connector.
12 USB USB connectors allow for the use of an
external USB memory to extend storage
capacity or to upgrade software.
13 Reserved Reserved for future development.
14 GNSS ANT The Global Navigation Satellite System
(GNSS) Antenna is used to connect a
GNSS antenna for acquisition of location
and timing data.
15 Audio Connector Input jack for the use of headphones.
16 Power Button/LED Turns the test set on and off.
17 Reserved Reserved for future development.
Figure 2 Side Panel Connectors
# Connector Description
1 Micro SD Port Allows a Micro SD card to be used as
storage location for instrument data.
2 LAN Connector Used to connect the CX300 to a network.
8 9 10 11
2
3
4
12
5
6
13 14
1
7
15 16
17
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