Page 13
IBVR20 software 8.43.doc
Issue 1
Note:
Surveillance for inputs 1-9 is sampled from output 1 and therefore associated inputs on
output 1 must be set to a value greater than 05 to prevent input audio faults.
Surveillance for inputs 10-16 is sampled from outputs 2-8 respectfully, i.e. input 10 from
output 2, input 16 from output 8 and therefore the associated inputs on the relevant
outputs must be set to a value greater than 05 to prevent input audio faults.
Each output channel has an independent adjustment for the volume level from each input
channel.
6. To select the input volume level to adjust, move the cursor along using the arrow keys
until it flashes beneath the input window required. Values between 0-9 may be entered
directly using the numbered keys, note the cursor automatically steps to the next input.
Or using the + or – keys will increase or decrease the value between 00 (silent) and 15
(maximum).
7. Press the Page down key again.
The display will step to the 2
nd
page,current input volume levels
11-20
of output channel 1.
------------------------------------------
| OUT 01 in|11|12|13|14|15|16|17|18|19|20 |
| volume|00|00|00|00|00|00|00|00|00|00 |
------------------------------------------
The levels are adjusted as before, please refer to 6.
8. Press the Page down key again.
The display will step to the 3
rd
page, current equalizer settings of output channel 1.
------------------------------------------
| OUT 01 frequency|315|500|1K0|2K0|3K1|6K3 |
| equalizer(dB)|+12|-12|+06|-06|+02|-02 |
------------------------------------------
To select the frequency to adjust, move the cursor along using the arrow keys until it
flashes beneath the frequency window required. If you wish to set the value to 0 (flat),
simply press the 0 key, note the cursor automatically steps to the next frequency setting.
Or using the + or – keys will lift or cut the value b14 and -14.
9. Press the Page down key again.
The display will show the 4
th
page, current chime, surveillance and sensor settings.
------------------------------------------
| OUT 01|CHIME|SURV (A=00 B=00)|ANS (-00 |
| | 00|Out 00|Off |Sens 00 |
------------------------------------------
↑
To adjust the chime volume. Ensure the cursor is flashing beneath the chime volume
window. Values between 0-9 may be entered directly using the numbered keys, note the
cursor automatically steps to the surveillance out level setting. Or using the + or – keys
will increase or decrease the value between 00 (silent) and 15 (maximum).
Note: Under normal operating conditions the loudspeaker line surveillance signal is
pulsed 1 second on in every 30 seconds. This allows the fault to be announced within 100
seconds to conform to BS5839 Pt 8. When the above page (P4) is selected, the
surveillance signal is continuous to enable output level setting.
