Hi Morris
Without digging through all the details the basic difference is as you describe - the M has a separate transformer/regulator supply for the complete reference-both the oven and the oscillator etc run as long as it is plugged into the AC supply. In early versions of the L the only the oven runs continuously-the oscillator does not.
Not sure re later versions of the L but there was an upgrade kit that put the 10 MHz 10811A OCXO in both the 5245L and the 5248. With that in place I think the oven and the oscillator both run continuously.
The original reference in the 5245L was 1 MHz and the 10811A upgrade kit had an extra divider to get down to 1 MHz.
Don't think there are any other significant differences but would have to look at the books to find out. Don't know the 5248 at all sorry.
I have an L and an M and their handbooks-plus a video amp and a 500 MHz plugin- looking for a 5255 12 GHz plugin (cheap!) I have a 5257A 18GHz xfer osc plugin but it's naffed. Only want the 5255 to be able to log 10 GHz readings over time- with the D/A converter chart recorder combo. I have an EIP 545 but it's BCD output option seems to be pretty rare.
DaveB
Christchurch, NZ
toggle quoted message
Show quoted text
----- Original Message -----
From: "morriso2002" <morriso@...>
To: <hp_agilent_equipment@...>
Sent: Thursday, September 23, 2004 2:25 PM
Subject: [hp_agilent_equipment] 524* family counter question
Hi all,
I'm trying to find a manual for my 5245M counter. I do have a manual
for the 5245L and I know the only significant difference between the
two is in the frequency reference.
A friend has offered to lend me the manual for a 5248 counter which
apperently looks identical to the 5245.
Can anyone here educate me about:
1. The difference between the 5245 and 5248
2. Whether the 5248 reference is the same as the one in the 5245M?
Thanks,
Morris
------------------------ Yahoo! Groups
Yahoo! Groups Links
