Manual

Test Equipment Preparation68P09258A31–A
Oct 2003
1X SCt 4812T BTS Optimization/ATP
F-3
Agilent R7495A Test Equipment Setup
This test equipment requires a warm-up period of at least 30 minutes
before BTS testing or calibration begins.
Using the Agilent E7495A with the LMF
The Agilent E7495A does not require the use of the 19MHz frequency
reference; if connected, it will be ignored. The Even Sec SYNC
connection is required.
The Agilent E7495A signal generator is only calibrated down to –80db.
In order to achieve accurate FER testing, be sure the RX setup includes
at least 40db of attenuation. This will ensure the signal generator will
output sufficient power to operate in the calibrated range.
Set the IP Address as described in Table F-1.
Table F-1: Set IP Address on Agilent E7495A test set
n Step Action
1 Use the System Button > Controls >IPAdmin to set an
IP address on the E7495A as 128.0.0.49, and Netmask to
255.255.255.128.
Connections
It is recommended that you use a hub with BNC and RJ–45 connections.
[Suggested models: Netgear model EN104 (4 port) or EN108 (8 port).
Do NOT use model numbers ending with “TP”; those have no BNC
connectors.]
The LMF will connect to the hub which in turn is connected to the BTS
and to the Agilent E7495A.
Agilent E7495A to Hub – This is an Ethernet cable, RJ–45 to RJ–45.
LMF to Hub – Use one of the following cables to connect the LMF to
the Hub:
– Ethernet cable, RJ–45 to RJ–45 (be sure that the LAN card is set for
either AUTO or to use the RJ–45 only).
– Coax cable between LAN card and Hub. (Use a “T” on the hub and
connect a cable between the other end of the “T” and the BTS LAN
connection).
Hub to BTS – Use BNC “T” connector on the hub. [If your hub doesn’t
have BNC ports, use a BNC to UTP adapter.]
F