Author Topic: HP8714B VNA  (Read 1230 times)

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Offline R_G_B_

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HP8714B VNA
« on: May 07, 2016, 05:44:46 AM »
Has anyone managed to upgrade this model HP8714B via EEPROM reprogramming to enable all the options. Mine uses the Intel 28F010 EEPROM.

Thanks

R,_G_B
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Offline TheSteve

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Re: HP8714B VNA
« Reply #1 on: May 07, 2016, 06:18:59 AM »
The mods I gave you previously are known to work on many different machines, including the 8711B, 8712B, 8714C etc.
The 8711B, 8712B and 8714B all use the same firmware.
I also asked about firmware version but you didn't tell me, if it is too old the extra features are likely not included.
Newest firmware is B.03.54 - be aware updating the firmware may require additional ram.
lastly be sure when you write to the 28F010 you erase before writing.
« Last Edit: May 07, 2016, 06:52:31 AM by TheSteve »
VE7FM
 

Offline R_G_B_

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Re: HP8714B VNA
« Reply #2 on: May 07, 2016, 06:44:46 AM »

TheSteve,

The firmware version is B.03.02.

How do i go about updating the firmware and RAM?

I have erased before writing to the ROM.

Thanks

 R_G_B_
« Last Edit: May 07, 2016, 06:46:19 AM by R_G_B_ »
R_G_B
 

Offline TheSteve

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Re: HP8714B VNA
« Reply #3 on: May 07, 2016, 06:54:47 AM »
If the hardware is the same as the 8712B I believe you'd need a 30 pin sim - not sure on the specific type though. I can't say for sure you'd need additional ram but I have heard of the problem occurring before. There is no way to backup the firmware before flashing so you might be stuck if it does require more ram. You can download the firmware image from the Keysight website, you will need an older computer to write the 3.5 inch floppy image.
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Offline R_G_B_

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Re: HP8714B VNA
« Reply #4 on: May 07, 2016, 07:16:59 AM »


I think it must be the same as the 8712B model as my board is different from the HP8712

http://minolta1.cninet.cz/HP8712C/

R_G_B
 

Offline G0HZU

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Re: HP8714B VNA
« Reply #5 on: May 07, 2016, 07:25:57 AM »
I powered up my HP8714B and it has firmware B.03.54  and BootROM B.04.00.

It was an ex rental so it already has all the options (I think)

i.e. IBASIC, The 1E1 Attenuator, the AM Delay option and the Fault Location option. Some of these require additional hardware to be fitted either internal or external. Mine came with a suitcase packed with an external 2 port switching test set, N type cal kit, external RF detector probes (for the AM delay?) plus several RF test cables. I assume that the 1E1 attenuator option requires additional hardware?

I'm not sure how useful any of these options really are. The only one that I took advantage of was the high power/attenuator option because this VNA could generate something like -60dBm up to +20dBm at the RF port 1.
 

Offline TheSteve

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Re: HP8714B VNA
« Reply #6 on: May 07, 2016, 07:54:45 AM »
Attenuator and AM delay are both hardware options. The features that can be added are IBASIC and the SRL fault analysis. Originally R_G_B thought he had an 8714C where the options are a little more useful as you can enable the network port which gives you a webserver etc.
It also makes a massive difference on the 8711B where you can go to the 8712B to give full onscreen vector results.
VE7FM
 

Offline R_G_B_

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Re: HP8714B VNA
« Reply #7 on: May 07, 2016, 07:56:16 AM »
 Mine is also boot ROM version B.04.00.

Program ROM 2048 KB

Main DRAM 4186112 bytes

DSP SRAM 65536 bytes

SIM DRAM 0 bytes.

GOHZU could you tell me if your memory is similar?

need to check  this before i install the updated firmware.

R_G_B
R_G_B
 

Offline G0HZU

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Re: HP8714B VNA
« Reply #8 on: May 07, 2016, 08:34:10 AM »
Program ROM 2097512 bytes 2048 KB

Main DRAM 4186112 bytes

DSP SRAM 65536 bytes

SIM DRAM 0 bytes.

CPU board V1.1
FracN board V1.0
Source board V1.1
Receiver board V1.2.2
 
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Offline R_G_B_

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Re: HP8714B VNA
« Reply #9 on: May 07, 2016, 08:53:32 AM »
I have the same parameters so it looks like I can update to firmware B.03.54.



thanks
R_G_B
 

Offline R_G_B_

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Re: HP8714B VNA
« Reply #10 on: May 10, 2016, 04:15:26 AM »
I manged to update  to the latest firmware.

The VNA has option 100 SLR fault location but not the IBASIC. Interesting the VNA has the same parameters on boot as G0HZU.

Also How do you get the plots---images to the PC with hpglview-543_Windows?

Thanks

R_G_B 
R_G_B
 

Offline R_G_B_

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Re: HP8714B VNA
« Reply #11 on: May 10, 2016, 08:06:18 AM »
I manged to update  to the latest firmware.

The VNA has option 100 SLR fault location but not the IBASIC. Interesting the VNA has the same parameters on boot as G0HZU.

Also How do you get the plots---images to the PC with hpglview-543_Windows?

Thanks

R_G_B


sorted it
R_G_B
 

Offline KC7HP

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HP87xxB vs HP87xxC
« Reply #12 on: March 21, 2017, 02:52:41 PM »
I am trying to update HP8711C to HP8712C.  The HP87xxC series uses 28F020 EEPROM and the boot image is based on larger blocks than the HP87xxA/B with 28F010 EEPROM.  Published tutorial on Converting HP8711A to HP8712A does not apply.  I've tried several mods to the boot image but have not guessed a useful adjustment.  One funny is that I tried an HP8714C image I dug up and the main effect was to make the machine think it was an HP8730!
 

Offline TheSteve

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Re: HP8714B VNA
« Reply #13 on: March 21, 2017, 03:50:43 PM »
If you post the image I'll take a look.
VE7FM
 


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