suit the listening conditions. If the signal has a very high dynamic range (or the levels are unknown), you can set Automatic Gain Controlto On – this will convert the 120 dB input range to 40 dB output range enabling you to hear signals of any level clearly.
Gain settings are provided for the measured signal. Tap the gain parameter and use the keypad to enter a new setting. Use ‘@’ to assign the new value for immediate response at the output – or use the up/down navigation keys to increment/decrement the value.
✐
Please note: A 0 dB gain on the measurement signal means you get a 1 V output for a 1 V input (when the measured signalAutomatic Gain Controlis set to Off).💡
Hint: • While playing back an annotation, you can use the up/down navigation keys to increase/decrease the gain of the annotation.• If you do not want to listen to the input signal, then set the Listen to Signal parameter to No, to economize on power.
8.1.6 Printers
You can make screen dumps on a printer connected to the analyzer using a standard USB cable, or on G1 – 3 analyzers, the supplied Adaptor AO-0657. Use Printers to select your preferred printer.
When a printer has been selected under the Printer Used parameter, then the Print Screen command appears in the Main Menu list. Use this command to print a screen dump of any screen on the analyzer.
The printer must either be a mobile thermal printer (from AM Tech or Seiko) or accept the PCL® printer language:
• MPS: Mobile Pro Spectrum – a mobile thermal printer from AM Tech (www.amteq.co.kr)
• PCL: printers accepting PCL printer language
• PCL Inkjet: suitable for Inkjet printers and supports colour printing
• PCL Laser: suitable for laser printers
• Seiko DPU: DPU-S245 or DPU-S445 – mobile thermal printers from Seiko Instruments (www.seikoinstruments.com)
PCL is the Printer Control Language developed by Hewlett-Packard (see www.hp.com). For PCL printers, you can use the Top and Left Margin parameters to position the print on the paper, and use Width and Height parameters to set the size of the print.
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks 75
if you had made the connection via USB. You then have the same possibilities for transferring data to the Archive and organizing data on the analyzer, as if you were connected via the USB connector.
The analyzer is connected directly to the Internet through a modem. BZ-5503 or an Internet browser will then be able to connect to the analyzer through TCP/IP using the analyzer’s (global) IP address. The setup of the modem connected to the analyzer is described in section 8.2.2 – please refer to the BZ-5503 online help for details on how to make a connection.
8.2.1 Connection to the Network using a LAN Modem
✐
Please note: The SIM card account should include a data subscription and should be usable without a pincode.Using a 3G modem with LAN interface is a simple and very reliable and powerful way of remotely connecting to the analyzer.
Set up the modem according to its user manual (usually requires connection to a PC) before you connect the modem to your analyzer. When ready, connect the modem to the analyzer using a LAN cable. For G1 – 3 analyzers, you will also need the 10/100 Ethernet CF Card UL-1016. (See
“Ordering Information” on page 143.) The Modem parameter should be set to Off.
The Airlink Raven XE, Intelligent 3G Ethernet Gateway from Sierra Wireless (www.sierrawireless.com) has been tested.
8.2.2 Connection to the Network using a GPRS/EDGE/HSPA Modem
✔
Best Practice: Turn off the analyzer when connecting the analyzer to a modem.✐
Please note: The SIM card account should include a data subscription and should be usable without a pincode.To use the modem you need to set up the parameters in Dialup Networking (listed below) and set the Modem parameter to GPRS/EDGE/HSPA Dialup.
Parameters in Dialup Networking:
• APN (Access Point Name) is an identifier required by the Network Operator. Examples are Internet, public and www.vodaphone.de
• Username, Password and possibly Domain should be set as required by the Network Operator
When the Modem parameter is set to GPRS/EDGE/HSPA Dialup, a connection is made using the settings in Dialup Networking. The Status parameter reflects the current status of the network connection – for example, Connected or Disconnected. If the connection fails, then the analyzer will try to reconnect – until it succeeds, or the Modem parameter is set to Disabled.
If the connection succeeds, then the analyzer will automatically get an IP address, which is readable (but not accessible) in Network – for more details see section 8.3.
The IP address is the address on the WAN (Wide Area Network) or Internet. Use this address in BZ-5503 or an Internet browser to connect to the analyzer.
✐
Please note: In some cases you might be able to get a static IP address from the network operator, which means that the analyzer will always have the same IP address when connected to the network. However, typically the IP address will be renewed each time the analyzer connects to the network. In order to deal with this, in BZ-5503 or via an Internet browser you need to use DynDNS – see section 8.2.3.Modems with USB Interface
The Airlink Fastrack Xtend GPRS, EDGE and HSPA modem from Sierra Wireless (www.sierrawireless.com) has been tested
Modems with an USB interface can be connected to the USB Type A socket on G4 analyzers.
Modems with RS–232 Serial Interfaces
The following modems have been tested:
• FASTRACK Supreme 10 and 20 GSM/GPRS/EDGE Modem from Wavecom
• Airlink Fastrack Xtend GPRS, EDGE and HSPA from Sierra Wireless (www.sierrawireless.com) For G4 analyzers, modems with an RS–232 serial interface can be connected using a USB to serial converter inserted in the USB Type A socket of the analyzer. The following USB to serial converters have been tested:
• USB to RS–232 Converter UL-0250 (See “Ordering Information” on page 143.)
• ES-U-1001-R10, ES-U-1001-B10 and ES-U-1001-A from EasySync (www.easysync-ltd.com)
• USB to RS232 Standard, USB to RS232 Professional and USB to RS232 Mini STD from U.S.
Converters (www.usconverters.com)
For G1 – 3 analyzers, use a CompactFlash-to-serial converter inserted in the CompactFlash slot of the analyzer. The Socket Serial I/O CF Card: Ruggedized (socketmobile.com) has been tested.
CompactFlash Modems (for G1 – 3 Analyzers)
Compact GPRS from Pretec (www.pretec.com) has been tested.
CompactFlash modems can be inserted directly in the CompactFlash socket of the analyzer.
8.2.3 DynDNS
If the analyzer is connected to the Internet through a GPRS/EDGE/HSPA modem or a local network with access to the Internet through a DSL modem/router and you want to connect to the analyzer from a place outside the local network, then you need to know:
• Global IP address of the analyzer or
• The global IP address of the DSL modem/router (and ensure that correct port forwarding in has been set the router – see details in the online help for BZ-5503)
CHAPTER 8
Advanced Use of Your Analyzer – Tips and Tricks 77
In some cases the global IP address is static and will never change, so you connect to the analyzer using BZ-5503 or an Internet browser by using this IP address.
Normally when you browse to addresses using an Internet Browser you do not use the IP address itself, but a hostname for it (for example, you would use the hostname www.google.com instead of ‘74.125.77.99’). This requires a DNS (Domain Name System) provider, which is a kind of Internet phone book that translates hostnames to IP addresses for you.
However, for a GPRS/EDGE/HSPA or even a DSL router then often the global IP address is renewed at each new connection or at certain time-intervals (for example, every two weeks). In this case you will have to change the IP address in BZ-5503 or the Internet Browser accordingly.
To avoid this, a service like DDNS (Dynamic Domain Name System) can be used.
DDNS is a network service that provides the capability for a modem/router/computer system to notify a domain name system provider to change, in real time (ad-hoc), the active DNS configuration of its configured hostnames and IP addresses. This will ensure that the hostname you use will always be updated to reflect the correct IP-address.
The analyzer supports DDNS provided by the world-wide DDNS service provider ‘DynDNS.com’.
The analyzer can then be configured to notify DynDNS.com each time the global IP address is set or changed. When BZ-5503 or an Internet Browser connects to the analyzer it then uses a hostname defined by DynDNS.com. From DynDNS.com it then gets the updated IP address.
You need to make an account at DynDNS.com, specifying a user name and a password for the account and a hostname (for example, 'MyBK2250.dyndns.org') identifying the analyzer.
In the analyzer you need to specify the Hostname, Username and Password and set Active to Yes in Preferences, under Modem/DynDNS settings. Each time the analyzer detects a change in the IP address it notifies DynDNS.com.