| Model/Order No. | Name |
| | Main frame |
| 37325B | Vector Network Analyzer(40 MHz to50GHz) |
| | Options |
| Option 1 | Rack mount |
| Option 2 | High-speed time(distance)domain capability |
| Option 4 | External SCSI-2 hard disk drive compatibility(internalHDD removed) |
| Option 7A | Replaces universal K connector(standard)withuniversalGPC-7 |
| Option 7N | Replaces universal K connector(standard)withuniversalN-male |
| Option 7MF | Replaces universal K connector(standard)withuniversalN-fermale |
| Option 7S | Replaces universal K connector(standard)withuniversal3.5 mm-male |
| Option 10A | High stabilty (oveniaed )time base (1 Hz frequency resolution) |
| Option 11 | Reference loop extension cables (standard on 3700A series) |
| | Upgrades** |
| ND42844 | 37211B to 37311A upgrade |
| ND42845 | 37217B to 37317A upgrade |
| ND42846 | 37225B to 37325A upgrade |
| ND42847 | 37247B to 37347A upgrade |
| ND42848 | 37269B to 37369A upgrade |
| ND42849 | 37211B to 37217A upgrade |
| ND42850 | 37211B to 37225A upgrade |
| ND42851 | 37211B to 37247A upgrade |
| ND42852 | 37211B to 37269A upgrade |
| ND42853 | 37217B to 37225A upgrade |
| ND42854 | 37217B to 37247A upgrade |
| ND42855 | 37217B to 37269A upgrade |
| ND42856 | 37225B to 37247A upgrade |
| ND42857 | 37225B to 37269A upgrade |
| ND42858 | 37247B to 37269B upgrade |
| ND42689 | 37311B to 37317A upgrade |
| ND42690 | 37311B to 37325A upgrade |
| ND42691 | 37311B to 37347A upgrade |
| ND42692 | 37311B to 37369A upgrade |
| ND42693 | 37317B to 37325A upgrade |
| ND42694 | 37317B to 37347A upgrade |
| ND42695 | 37317B to 37369A upgrade |
| ND42696 | 37325B to 37347A upgrade |
| ND42697 | 37325B to 37369A upgrade |
| ND42698 | 37347A to 37369A upgrade |
| | On-site support options |
| Option ES31 | 3 year on-site repair |
| Option ES37 | 3 year on-site verification |
| Option ES38 | 3 year on-site Mil-sted verifeication |
| Option ES51 | 5 year on-site repair |
| | Calibration kits |
| 3650 | SMA/3.5mm Calibration Kit |
| Option 1 | Adds sliding terminations |
| 3651 | GPC-7 Calibration Kit |
| Option 1 | Adds siliding terminations |
| 3652 | K Connector Calibration Kit |
| Option 1 | Adds sliding terminations |
| 3653 | Type N Calibration Kit |
| 3654B | V Connector Calibration Kit with sliding loads |
| 3750 | SMA/3.5mm Economy Calibration Kit(8.6GHz) |
| 3751 | GPC-7 Economy Calibration Kit(8.6GHz) |
| 3753 | Type N Economy Calibration Kit(50Ω,8.6GHz) |
| 3753-75 | Type N Economy Calibration Kit(75Ω,8.6GHz) |
| | Verification kits |
| 3663 | Type N Verification Kit |
| 3666 | 3.5mm Verifecation Kit |
| 3667 | GPC-7 Verifecation Kit |
| 3668 | K Connector Verifcation Kit |
| 3669B | V Connector Verifcation Kit |
| | Test port cables |
| 3670A50-1 | GPC-7 smi-rigid cable,1 foot(2 required) |
| 3670A50-2 | GPC-7 smi-rigid cable,2 foot |
| 3670K50-1 | K connector semi-rigid cable,1 foot(2 required) |
| 3670K50-2 | K connector semi-rigid cable,2 foot |
| 3670V50-1 | V connector semi-rigid cable,1 foot(2 required) |
| 3670V50-2 | V connector semi-rigid cable,2 foot |
| 3671A50-1 | GPC-7 flixible cables,25in(1 pair) |
| 3671A50-2 | GPC-7 flixible cables,38in |
| 3671S50-1 | 3.5mm flixible cables,25in(1 pair) |
| 3671S50-2 | 3.5mm flixible cables,38in |
| 3671K50-1 | K connector flexible cables,25in(pair) |
| 3671K50-2 | K connector flexible cables,38in |
| 3671V50-1 | V connector flexible cables,25in(pair) |
| 3671V50-2 | V connector flexible cables,38in |