Backhaul Analyzer Measurement Guide : T1/FT1 Analyzer (Option 51 or 54)   : Error/Alarm Menu
 
Error/Alarm Menu
When not active, some submenu keys have no arrow to indicate a sub menu, and the circular indicator has a plain background. The circular indicator with a red background and the sub menu arrow appear only when these submenu keys are active.
Key Sequence: Error/Alarm
T1 Error/Alarm (1 of 2)
Bit Error
Use this submenu key to insert a bit error. Press this submenu key once to select the function. Press the key again to display the Bit Error submenu. The “Error Type” field in the instrument settings summary table at the left side of the measurement display changes to “### BIT”, where ### is the burst setting.
Burst
A burst can contain from 1 to 1000 errors. Set this parameter by pressing the Burst submenu key and then using the rotary knob, arrow keys, or number keypad. The following text appears in red at the top of the BERT table: Bit Error Insert ###. The number digits appear as they are pressed on the number keypad. Then press the rotary knob or the Enter key. If you use the number keypad to enter the burst setting, then the Burst submenu key label changes to Enter. The submenu key can be used to enter the parameter value.
Back
Press this submenu key to return to the Error/Alarm menu.
BER
Errors can be added to the transmission path by pressing the BER submenu key. Valid BER include 1E–2, 1E–3, 1E–4, 1E–5, 1E–6, and 1E–7. If a BER value of 1E–3 is selected, then 1 error will be introduced for every 1000 bits in the transmission path. Pressing ON keeps adding errors. Pressing OFF stops the errors. Press this submenu key once to select the function. The “Error Type” field in the instrument settings summary table at the left side of the measurement display changes to “1E–# BER”, where # indicates the bit error rate setting. Press the key again to display the Bit Error Rate submenu. Choose from the six rate options and press Back to continue.
Rate 1E–#
These six submenu keys are labeled with number 1E–2 through number 1E–7. Use these submenu keys to select a bit error rate.
Back
Press this submenu key to return to the Error/Alarm menu.
BPV
Use this submenu key to configure error bits for bipolar violation testing. Press this submenu key once to select the function. The “Error Type” field in the instrument settings summary table at the left side of the measurement display changes to “### BPV”, where ### is the burst setting. Press the key again to set the Burst count described above. Press the Back submenu key to return to the Error/Alarm menu.
T1 Error/Alarm (2 of 2)
Frame Bit Error
Use this submenu key to insert a frame bit error. Press this submenu key once to select the function. The “Error Type” field in the instrument settings summary table at the left side of the measurement display changes to “### FRAME”, where ### is the burst setting. Press the key again to enter the Frame Bit Error menu and set the burst count, See Burst. Press the Back submenu key to return to the Error/Alarm menu.
AIS Alarm On/Off
When the AIS is turned ON, the data is replaced with an unframed signal of all ones. Press this submenu key to turn ON the AIS Alarm function. The “Error Type” field in the instrument settings summary table at the left side of the measurement display changes to “Error Type AIS”. The Alarm ON circle indicator (in the yellow TX portion of the upper part of the measurement data display) is displayed in red when this parameter is ON. Selecting this function automatically turns the Error, Off/On submenu key function to OFF, and its circle indicator (in the yellow TX portion of the upper display) is displayed as an open circle. Pressing this submenu key again turns the alarm OFF, its circle indicator is displayed as an open circle, and the Bit Error submenu key becomes active (its circle indicator is displayed in red).
RAI Alarm On/Off
If the terminal loses its incoming signal, then an RAI signal is transmitted in the outgoing direction. RAI is also called Yellow Alarm. Press this submenu key to turn ON the RAI Alarm function. The “Error Type” field in the instrument settings summary table at the left side of the measurement display changes to “Error Type RAI”. The Alarm ON circle indicator (in the yellow TX portion of the upper part of the measurement data display) is displayed in red when this parameter is ON. Selecting this function automatically turns the Error, Off/On submenu key function to OFF, and its circle indicator (in the yellow TX portion of the upper display) is displayed as an open circle. Pressing this submenu key again turns the alarm Off, its circle indicator is displayed as an open circle, and the Bit Error submenu key becomes active (its circle indicator is displayed in red).
Error, Off/On
This submenu key is active only when the BER submenu key is active. Press this submenu key to toggle Error Off and On. The Error ON circle indicator (in the yellow TX portion of the upper display) is displayed in green when this parameter is ON.