Item units Kilo instead of Mega

[Tex74]

Hi there,

I monitor a receiver oid and get operational frequency in Hz with a discovery.
The frequency is for example 2182000 Hz and the value I read round it to 2.18 MHz

There are 2 ways the value would be readable for us:
2.182 MHz
2182 Khz
I tried preprocessing like "return(Math.round(value* 10000) / 10000)" but it doesn't change a thing.

Is there a way I can manage this for this specific item? (zabbix 5 at this time)
If not, I'll remove units information

Regards,

[cyber]

I think there is no option to change the precision.. Or highest level to round it ...

[Hamardaban]

What values do you see in the "latest data" for this item (view as history)?
2182000 or 2.18 ?

[Tex74]

The value in history is 2182000

[Hamardaban]

You have an automatic unit conversion triggered. https://www.zabbix.com/documentation...nit-conversion

Here the number of decimal places displayed is fixed (2). You can change it by changing the frontend code (php).

But there is a simpler option! Create a dependent item (named for ex "frequency in kilohertz") in which divide your value by 1000 (in preprocessing) and put an exclamation mark in the UNIT field.

[Tex74]

I've been thinking of this simpler solution but my original item comes from a discovery in a template I created.
It seems that discovery item cannot be a master item. Not in host's item, in template's item nether.

[Hamardaban]

No a problem! Use preprocessing at the discovered item to divide value by 1000 and so on

[Tex74]

Thanks Hamardaban.
This workaround works fine with with a frequency like I used in my example. Unfortunatly it won't when my frequency change like this 2187500 Hz
I had 2.19 Mhz at first time and when I divide by 1000 the Item, with the exclamation mark, I get 2187 KHz, not 2187.5 Khz

I'll go back without units or with !Hz and this will be ok.
Thanks for the exclamation mark solution.